engine: PivotTable filters test each record against a set of selected labels (#3279)

Every source record scanned the filter's whole selection, so a large
selection multiplied by many records was slow even when nothing passed.
Each filter's labels are lowercased into a set once per computation.

apps/gridcraft-cli/src/check/calc.rs

@@ -31,20 +31,41 @@ fn is_volatile(e: &Expr, volatile_names: &HashSet<String>) -> bool {
 }
 
 /// Upper-cased defined names whose formula is volatile, directly or through other names.
+///
+/// Volatility flows backwards along name references: each name is parsed and walked once, and a
+/// worklist carries volatility from a name to the names that use it. Rescanning every name until
+/// nothing changes was quadratic: a file listing its names so that each pass marked only one more
+/// did one full pass per name.
 pub(super) fn volatile_names(wb: &Workbook) -> HashSet<String> {
-    let parsed: Vec<(String, Option<Expr>)> =
-        wb.names.iter().map(|n| (n.name.to_ascii_uppercase(), gridcraft_engine::formula::parse(&n.formula).ok())).collect();
     let mut set = HashSet::new();
-    // Each round adds at least one name or stops, so `len + 1` rounds reach the fixed point.
-    for _ in 0..=parsed.len() {
-        let before = set.len();
-        for (name, e) in &parsed {
-            if !set.contains(name) && e.as_ref().is_some_and(|e| is_volatile(e, &set)) {
-                set.insert(name.clone());
+    // Upper-cased name -> the names whose formulas refer to it.
+    let mut users: HashMap<String, Vec<String>> = HashMap::new();
+    let mut queue = Vec::new();
+    let none = HashSet::new();
+    for n in &wb.names {
+        let name = n.name.to_ascii_uppercase();
+        let Ok(e) = gridcraft_engine::formula::parse(&n.formula) else { continue };
+        if is_volatile(&e, &none) {
+            if set.insert(name.clone()) {
+                queue.push(name.clone());
             }
+            continue;
         }
-        if set.len() == before {
-            break;
+        let mut used = BTreeSet::new();
+        e.walk(&mut |x| {
+            if let Expr::Name(r) = x {
+                used.insert(r.to_ascii_uppercase());
+            }
+        });
+        for r in used {
+            users.entry(r).or_default().push(name.clone());
+        }
+    }
+    while let Some(v) = queue.pop() {
+        for user in users.remove(&v).unwrap_or_default() {
+            if set.insert(user.clone()) {
+                queue.push(user);
+            }
         }
     }
     set

apps/gridcraft-cli/src/check/tests.rs

@@ -178,6 +178,28 @@ fn volatile_names_propagate() {
     assert_eq!(check(&wb, &Options::default()).calc.volatile, 1);
 }
 
+#[test]
+fn volatile_names_propagate_through_a_long_chain_in_one_walk() {
+    // Chain0 uses Chain1, Chain1 uses Chain2, ... and only the last is volatile: listed in this order, a rescan
+    // until nothing changes marked one name per pass (quadratic). Every name in the chain is
+    // volatile; a name off the chain is not.
+    const LEN: usize = 5_000;
+    let mut wb = book(&[("A1", "=1", n(1.0))]);
+    let name =
+        |name: String, formula: String| gridcraft_engine::model::DefinedName { name, scope: None, formula, comment: String::new(), hidden: false };
+    for i in 0..LEN {
+        let formula = if i + 1 == LEN { "NOW()".to_string() } else { format!("Chain{}+1", i + 1) };
+        wb.names.push(name(format!("Chain{i}"), formula));
+    }
+    wb.names.push(name("Plain".into(), "Chain0*0+Other".into()));
+    wb.names.push(name("Other".into(), "1".into()));
+    let set = volatile_names(&wb);
+    assert!((0..LEN).all(|i| set.contains(&format!("CHAIN{i}"))));
+    assert!(set.contains("PLAIN"));
+    assert!(!set.contains("OTHER"));
+    assert_eq!(set.len(), LEN + 1);
+}
+
 #[test]
 fn round_trip_of_a_simple_book_is_clean() {
     let mut wb = book(&[("A1", "2", n(2.0)), ("B1", "=A1*3", n(6.0)), ("A2", "x", Value::text("x"))]);

apps/gridcraft-web/src/web.rs

@@ -193,7 +193,7 @@ fn services(inbox: Inbox, ctx: egui::Context) -> Services {
             let ctx = ctx.clone();
             wasm_bindgen_futures::spawn_local(async move {
                 let Some(file) = rfd::AsyncFileDialog::new()
-                    .add_filter("Spreadsheets", &["xlsx", "xlsm", "xls", "xlsb", "ods", "csv", "tsv", "txt", "json"])
+                    .add_filter("Spreadsheets", &["xlsx", "xlsm", "xls", "xlsb", "ods", "csv", "tsv", "txt", "slk", "json"])
                     .pick_file()
                     .await
                 else {

apps/gridcraft/Cargo.toml

@@ -37,13 +37,13 @@ winit = { version = "0.30", default-features = false, features = ["x11", "waylan
 craft-print = { git = "https://github.com/storytold/craft-libs", rev = "c5a1cbfb5f9049f9270955caffb5bee5997aebf7" }
 craft-update = { workspace = true }
 rfd = { workspace = true }
-arboard = { workspace = true }
+arboard = { workspace = true, features = ["image-data"] }
 gridcraft-mcp = { workspace = true }
 # The control channel's token (OS random numbers); already in the tree.
 getrandom = "0.4"
 
 [target.'cfg(any(target_os = "linux", target_os = "freebsd"))'.dependencies]
-arboard = { workspace = true, features = ["wayland-data-control"] }
+arboard = { workspace = true, features = ["image-data", "wayland-data-control"] }
 
 [target.'cfg(target_os = "windows")'.dependencies]
 # Blocks on the start-up DirectX 12 adapter probe (`graphics.rs`); already in the tree via eframe.

apps/gridcraft/src/main.rs

@@ -154,7 +154,7 @@ fn read_clipboard<T>(
 fn services() -> Services {
     // Keep the owner alive: X11/Wayland serve clipboard data from this handle.
     let clipboard: Rc<RefCell<Option<arboard::Clipboard>>> = Rc::default();
-    let (html_clipboard, text_clipboard) = (clipboard.clone(), clipboard.clone());
+    let (html_clipboard, text_clipboard, image_clipboard) = (clipboard.clone(), clipboard.clone(), clipboard.clone());
     Services {
         copy_html: Some(Box::new(move |html, text| {
             let mut clipboard = clipboard.borrow_mut();
@@ -165,9 +165,13 @@ fn services() -> Services {
         })),
         paste_html: Some(Box::new(move || read_clipboard(&html_clipboard, |clipboard| clipboard.get().html()))),
         paste_text: Some(Box::new(move || read_clipboard(&text_clipboard, |clipboard| clipboard.get_text()))),
+        paste_image: Some(Box::new(move || {
+            let image = read_clipboard(&image_clipboard, |clipboard| clipboard.get_image())?;
+            image::RgbaImage::from_raw(u32::try_from(image.width).ok()?, u32::try_from(image.height).ok()?, image.bytes.into_owned())
+        })),
         pick_open: Some(Box::new(|| {
             rfd::FileDialog::new()
-                .add_filter("Spreadsheets", &["xlsx", "xlsm", "xls", "xlsb", "ods", "csv", "tsv", "txt", "json"])
+                .add_filter("Spreadsheets", &["xlsx", "xlsm", "xls", "xlsb", "ods", "csv", "tsv", "txt", "slk", "json"])
                 .add_filter("Excel Workbook", &["xlsx", "xlsm"])
                 .add_filter("Excel 97-2003 Workbook (import)", &["xls"])
                 .add_filter("Excel Binary Workbook (data import)", &["xlsb"])

crates/calc/src/eval.rs

@@ -359,9 +359,10 @@ impl<'h> Evaluator<'h> {
             return v.clone();
         }
         let wb = self.host.workbook();
-        // Sheet-qualified `Sheet1!Name`.
-        let (scope_sheet, bare) = match n.split_once('!') {
-            Some((s, b)) => match wb.sheet_index(&gridcraft_core::unquote_sheet(s)) {
+        // Sheet-qualified `Sheet1!Name`. The parser stores the sheet unquoted, so it is used as
+        // is (`' Sales '` keeps its spaces) and split at the last `!` (`'a!b'!Name`).
+        let (scope_sheet, bare) = match n.rsplit_once('!') {
+            Some((s, b)) => match wb.sheet_index(s) {
                 Some(i) => (i, b),
                 None => return err(CellError::Name),
             },

crates/chart/src/render/cartesian.rs

@@ -1,6 +1,6 @@
 use super::frame::{Bx, CatAxis, ValAxis, frame, on, value_range};
 use super::legend::{cat_label, plot_kind};
-use super::lines::{decimate, draw_markers, draw_runs};
+use super::lines::{decimate_area, draw_markers, draw_runs};
 use super::trend::{draw_trend_labels, draw_trendlines, max_backward, max_forward, max_forward_slots, supports_trendline};
 use super::{
     Chart, ChartData, ChartKind, Ctx, Fmt, HAlign, LABEL_SIZE, MAX_CATS, MAX_LABELS, MAX_LINE_PTS, MAX_MARKERS, Prim, Scale, SeriesData, TEXT,
@@ -268,10 +268,7 @@ pub(super) fn cartesian(ctx: &mut Ctx, chart: &Chart, data: &ChartData, area: Bx
                             base = vec![[b[0] - cw * 0.3, b[1]], [b[0] + cw * 0.3, b[1]]];
                         }
                     }
-                    let top = decimate(top, MAX_LINE_PTS * 2);
-                    let base = decimate(base, MAX_LINE_PTS * 2);
-                    let mut poly = top;
-                    poly.extend(base.into_iter().rev());
+                    let poly = decimate_area(top, base, MAX_LINE_PTS * 2);
                     if poly.len() >= 3 {
                         ctx.out.push(Prim::Polygon { pts: poly, fill: s.color, stroke: None });
                     }

crates/chart/src/render/lines.rs

@@ -54,6 +54,86 @@ pub(super) fn decimate(pts: Vec<[f32; 2]>, max: usize) -> Vec<[f32; 2]> {
     out
 }
 
+/// Decimates the top and baseline of an area chart together at the same horizontal indices so
+/// `area_mesh`'s paired vertical-strip topology (`pts[i]` ↔ `pts[2n - 1 - i]`) is preserved.
+pub(super) fn decimate_area(top: Vec<[f32; 2]>, base: Vec<[f32; 2]>, max: usize) -> Vec<[f32; 2]> {
+    let n = top.len().min(base.len());
+    if n == 0 {
+        return Vec::new();
+    }
+    if n <= max {
+        let mut poly = top;
+        poly.truncate(n);
+        poly.extend(base.into_iter().take(n).rev());
+        return poly;
+    }
+    let mut cols: Vec<[usize; 6]> = Vec::new();
+    let mut keep = Vec::with_capacity(max * 2);
+    let mut i = 0;
+    while i < n {
+        let col = top[i][0].floor();
+        let (start, mut t_mn, mut t_mx, mut b_mn, mut b_mx) = (i, i, i, i, i);
+        let mut k = i + 1;
+        while k < n && top[k][0].floor() == col {
+            if top[k][1] < top[t_mn][1] {
+                t_mn = k;
+            }
+            if top[k][1] > top[t_mx][1] {
+                t_mx = k;
+            }
+            if base[k][1] < base[b_mn][1] {
+                b_mn = k;
+            }
+            if base[k][1] > base[b_mx][1] {
+                b_mx = k;
+            }
+            k += 1;
+        }
+        let entry = [start, t_mn, t_mx, b_mn, b_mx, k - 1];
+        cols.push(entry);
+        let mut idx = entry;
+        idx.sort_unstable();
+        let mut last = usize::MAX;
+        for ix in idx {
+            if ix != last {
+                keep.push(ix);
+                last = ix;
+            }
+        }
+        i = k;
+    }
+    if keep.len() > max * 4 {
+        let max_groups = (max * 4 / 6).max(1);
+        let group_size = cols.len().div_ceil(max_groups);
+        keep.clear();
+        for ch in cols.chunks(group_size) {
+            let start = ch[0][0];
+            let end = ch.last().map_or(start, |c| c[5]);
+            let t_mn = ch.iter().map(|c| c[1]).min_by(|&a, &b| top[a][1].total_cmp(&top[b][1])).unwrap_or(start);
+            let t_mx = ch.iter().map(|c| c[2]).max_by(|&a, &b| top[a][1].total_cmp(&top[b][1])).unwrap_or(start);
+            let b_mn = ch.iter().map(|c| c[3]).min_by(|&a, &b| base[a][1].total_cmp(&base[b][1])).unwrap_or(start);
+            let b_mx = ch.iter().map(|c| c[4]).max_by(|&a, &b| base[a][1].total_cmp(&base[b][1])).unwrap_or(start);
+            let mut idx = [start, t_mn, t_mx, b_mn, b_mx, end];
+            idx.sort_unstable();
+            let mut last = usize::MAX;
+            for ix in idx {
+                if ix != last {
+                    keep.push(ix);
+                    last = ix;
+                }
+            }
+        }
+    }
+    let mut poly = Vec::with_capacity(keep.len() * 2);
+    for &ix in &keep {
+        poly.push(top[ix]);
+    }
+    for &ix in keep.iter().rev() {
+        poly.push(base[ix]);
+    }
+    poly
+}
+
 /// Draws a polyline split at gaps (`None`), decimated when long. With `smooth` (the plot box),
 /// each run is interpolated with a Catmull-Rom spline so the line curves through the data points.
 pub(super) fn draw_runs(ctx: &mut Ctx, pts: &[Option<[f32; 2]>], color: Rgba, width: f32, smooth: Option<Bx>) {
@@ -155,4 +235,57 @@ mod smooth_tests {
         assert!(out.len() > 5);
         assert!(out.iter().all(|p| (0.0..=300.0).contains(&p[0]) && (10.0..=110.0).contains(&p[1])));
     }
+
+    #[test]
+    fn decimate_area_preserves_paired_vertical_strips() {
+        let top: Vec<[f32; 2]> = (0..1000).map(|i| [i as f32 * 0.25, ((i * 37) % 100) as f32]).collect();
+        let base: Vec<[f32; 2]> = (0..1000).map(|i| [i as f32 * 0.25, 100.0]).collect();
+        let poly = decimate_area(top, base, 64);
+        assert_eq!(poly.len() % 2, 0);
+        let half = poly.len() / 2;
+        for i in 0..half {
+            assert_eq!(poly[i][0], poly[poly.len() - 1 - i][0]);
+            assert_eq!(poly[poly.len() - 1 - i][1], 100.0);
+        }
+    }
+
+    #[test]
+    fn decimate_area_preserves_extrema_across_3000_columns() {
+        // 3,000 occupied pixel columns with 6 points per column (18,000 points total),
+        // where each column has distinct top and baseline extrema so the initial per-column
+        // index list exceeds `MAX_LINE_PTS * 2 * 4` (6,400).
+        let max = MAX_LINE_PTS * 2;
+        let mut top = Vec::with_capacity(18_000);
+        let mut base = Vec::with_capacity(18_000);
+        for col in 0..3_000 {
+            let y_top = [50.0, 20.0, 80.0, 50.0, 50.0, 50.0];
+            let y_base = [150.0, 150.0, 150.0, 120.0, 180.0, 150.0];
+            for s in 0..6 {
+                let x = col as f32 + s as f32 * 0.1;
+                top.push([x, y_top[s]]);
+                base.push([x, y_base[s]]);
+            }
+        }
+        // Plant sharp spikes on both top and baseline in interior columns.
+        top[777 * 6 + 1][1] = 1.0;
+        top[1999 * 6 + 2][1] = 99.0;
+        base[1234 * 6 + 3][1] = 101.0;
+        base[2501 * 6 + 4][1] = 199.0;
+
+        let poly = decimate_area(top, base, max);
+        assert_eq!(poly.len() % 2, 0);
+        let half = poly.len() / 2;
+        assert!(half <= max * 4, "retained {half} paired vertices, limit is {}", max * 4);
+        for i in 0..half {
+            assert_eq!(poly[i][0], poly[poly.len() - 1 - i][0]);
+        }
+        let top_kept = &poly[..half];
+        let base_kept = &poly[half..];
+        assert_eq!(top_kept.first().map(|p| p[0]), Some(0.0));
+        assert_eq!(top_kept.last().map(|p| p[0]), Some(2999.5));
+        assert!(top_kept.iter().any(|p| p[1] == 1.0), "top min spike preserved");
+        assert!(top_kept.iter().any(|p| p[1] == 99.0), "top max spike preserved");
+        assert!(base_kept.iter().any(|p| p[1] == 101.0), "base min spike preserved");
+        assert!(base_kept.iter().any(|p| p[1] == 199.0), "base max spike preserved");
+    }
 }

crates/chart/src/resolve.rs

@@ -179,9 +179,10 @@ fn category_table(wb: &Workbook, sheet: usize, formula: &str, values: &str) -> (
 /// Whether `t` names a defined name seen from `sheet` (`Name`, or `Sheet1!Name` looked up on
 /// that sheet), the way the evaluator looks names up.
 fn is_defined_name(wb: &Workbook, sheet: usize, t: &str) -> bool {
-    match t.split_once('!') {
-        Some((s, bare)) => wb.sheet_index(s.trim_matches('\'')).is_some_and(|i| wb.name(bare, i).is_some()),
-        None => wb.name(t, sheet).is_some(),
+    // `'Bob''s'!Name`: the sheet is unquoted as everywhere else (#2012).
+    match gridcraft_core::split_sheet(t) {
+        (Some(s), bare) => wb.sheet_index(&s).is_some_and(|i| wb.name(bare, i).is_some()),
+        (None, _) => wb.name(t, sheet).is_some(),
     }
 }
 

crates/chart/src/tests.rs

@@ -1258,3 +1258,75 @@ fn box_whisker_draws_each_series_quartile_method() {
     // The boxes span 3.5 and 2.5 data units on the same value axis.
     assert!((heights[0] / heights[1] - 1.4).abs() < 0.001);
 }
+
+#[test]
+fn a_series_named_by_a_name_on_a_sheet_with_an_apostrophe_resolves() {
+    // #2012: `'Bob''s'!Title` kept the doubled quote, so the sheet wasn't found and the series
+    // was named by the literal text.
+    let mut wb = Workbook::new();
+    {
+        let s = wb.sheet_mut(0).unwrap();
+        s.name = "Bob's".into();
+        s.set_value(CellRef::new(0, 0), Value::from("Takings"));
+        s.set_value(CellRef::new(1, 0), Value::Number(4.0));
+        s.set_value(CellRef::new(2, 0), Value::Number(9.0));
+    }
+    wb.names.push(gridcraft_model::DefinedName {
+        name: "Title".into(),
+        scope: Some(0),
+        formula: "'Bob''s'!$A$1".into(),
+        comment: String::new(),
+        hidden: false,
+    });
+    let mut c = chart(ChartKind::ColumnClustered);
+    c.series = vec![Series {
+        name: Some("'Bob''s'!Title".into()),
+        categories: None,
+        values: "'Bob''s'!$A$2:$A$3".into(),
+        bubble_sizes: None,
+        color: None,
+        secondary: false,
+        kind: None,
+        quartiles: Default::default(),
+        smooth: false,
+        trendlines: Vec::new(),
+    }];
+    let d = resolve(&wb, 0, &c);
+    assert_eq!(d.series.first().map(|s| s.name.as_str()), Some("Takings"));
+}
+
+#[test]
+fn a_series_named_by_a_name_on_a_sheet_with_a_bang_resolves() {
+    // `'a!b'!Title`: the sheet name holds a `!`, so the evaluator must split the parsed name at
+    // the last one, not the first.
+    let mut wb = Workbook::new();
+    {
+        let s = wb.sheet_mut(0).unwrap();
+        s.name = "a!b".into();
+        s.set_value(CellRef::new(0, 0), Value::from("Takings"));
+        s.set_value(CellRef::new(1, 0), Value::Number(4.0));
+        s.set_value(CellRef::new(2, 0), Value::Number(9.0));
+    }
+    wb.names.push(gridcraft_model::DefinedName {
+        name: "Title".into(),
+        scope: Some(0),
+        formula: "'a!b'!$A$1".into(),
+        comment: String::new(),
+        hidden: false,
+    });
+    let mut c = chart(ChartKind::ColumnClustered);
+    c.series = vec![Series {
+        name: Some("'a!b'!Title".into()),
+        categories: None,
+        values: "'a!b'!$A$2:$A$3".into(),
+        bubble_sizes: None,
+        color: None,
+        secondary: false,
+        kind: None,
+        quartiles: Default::default(),
+        smooth: false,
+        trendlines: Vec::new(),
+    }];
+    let d = resolve(&wb, 0, &c);
+    assert_eq!(d.series.first().map(|s| s.name.as_str()), Some("Takings"));
+}

crates/core/src/addr.rs

@@ -188,6 +188,12 @@ impl RangeRef {
             end: CellRef::new(self.end.row.max(o.end.row), self.end.col.max(o.end.col)),
         }
     }
+    /// The top-left cell of a list of areas: the lowest row and the lowest column across all of
+    /// them, whatever order they are listed in. Excel writes the relative formulas of a
+    /// multi-area validation or conditional format for this cell. `None` for no areas.
+    pub fn top_left(ranges: &[RangeRef]) -> Option<CellRef> {
+        ranges.iter().copied().reduce(|a, b| a.union(&b)).map(|r| r.start)
+    }
     /// Row-major iterator over the cells. Callers must bound huge ranges themselves.
     pub fn iter(&self) -> impl Iterator<Item = CellRef> + '_ {
         let (r0, r1, c0, c1) = (self.start.row, self.end.row, self.start.col, self.end.col);
@@ -307,6 +313,16 @@ mod tests {
         Ok(())
     }
 
+    #[test]
+    fn top_left_spans_every_area_in_any_order() {
+        let areas: Vec<RangeRef> = ["H62:H68", "H26:H27", "H93:H95"].iter().filter_map(|a| RangeRef::parse(a)).collect();
+        assert_eq!(RangeRef::top_left(&areas), CellRef::parse("H26"));
+        // Lowest row and lowest column, even when they come from different areas.
+        let areas: Vec<RangeRef> = ["C5:D6", "E2", "B9"].iter().filter_map(|a| RangeRef::parse(a)).collect();
+        assert_eq!(RangeRef::top_left(&areas), CellRef::parse("B2"));
+        assert_eq!(RangeRef::top_left(&[]), None);
+    }
+
     #[test]
     fn sheet_quoting_follows_excel() {
         for quoted in [

crates/engine/src/cf.rs

@@ -244,7 +244,7 @@ impl CfCache {
         let v = sh.value(c);
         let no_stats = RuleStats::default();
         for (idx, cf) in rules {
-            let first = cf.ranges.first().map(|r| r.start).unwrap_or(c);
+            let first = RangeRef::top_left(&cf.ranges).unwrap_or(c);
             let st: &RuleStats = match stats_need(&cf.rule) {
                 Some(need) => &*self.stats.entry(idx).or_insert_with(|| RuleStats::build(sh, &cf.ranges, need)),
                 None => &no_stats,

crates/engine/src/clip_html.rs

@@ -17,11 +17,13 @@ const MAX_ROW_SPAN: usize = gridcraft_core::MAX_ROWS as usize;
 /// table is ignored: the HTML only refines cells of the tab-separated text, which stays the source.
 const MAX_HTML_CELLS: usize = 1_000_000;
 
-/// One table cell: its visible text and the number the source recorded for it, if any.
+/// One table cell: its visible text, the number the source recorded for it, if any, and whether
+/// it is a header cell (`<th>`).
 #[derive(Clone, Debug, Default, PartialEq)]
 pub(crate) struct HtmlCell {
     pub text: String,
     pub num: Option<f64>,
+    pub header: bool,
 }
 
 /// The cells of the first table in `html`, row by row, read no further than `max_rows` rows of
@@ -88,7 +90,7 @@ pub(crate) fn table_cells(html: &str, max_rows: usize, max_cols: usize) -> Vec<V
                 let num = attr(attrs, "x:num").or_else(|| attr(attrs, "sdval")).and_then(|v| v.trim().parse::<f64>().ok()).filter(|n| n.is_finite());
                 let colspan = span(attrs, "colspan", MAX_SPAN);
                 let rowspan = span(attrs, "rowspan", MAX_ROW_SPAN);
-                cell = Some(OpenCell { cell: HtmlCell { text: String::new(), num }, colspan, rowspan });
+                cell = Some(OpenCell { cell: HtmlCell { text: String::new(), num, header: name == "th" }, colspan, rowspan });
             }
             ("td" | "th", true) | ("tr", true) => grid.finish(&mut cell),
             ("br", _) => {
@@ -376,18 +378,18 @@ mod tests {
             <tr><td colspan=2 x:num="2.5">2.50 &amp; up</td><td>x</td></tr><!--EndFragment--></table></body></html>"#;
         let rows = table_cells(excel, 2, 3);
         assert_eq!(rows.len(), 2);
-        assert_eq!(rows[0][0], HtmlCell { text: "Rp10,000.00".into(), num: Some(10000.0) });
-        assert_eq!(rows[0][1], HtmlCell { text: "Name".into(), num: None });
+        assert_eq!(rows[0][0], HtmlCell { text: "Rp10,000.00".into(), num: Some(10000.0), ..HtmlCell::default() });
+        assert_eq!(rows[0][1], HtmlCell { text: "Name".into(), num: None, ..HtmlCell::default() });
         assert_eq!(rows[1].len(), 3, "colspan keeps the next cell in its column");
         assert_eq!(rows[1][0].text, "2.50 & up");
         assert_eq!(rows[1][2].text, "x");
 
         let calc = r#"<table cellspacing="0" border="0"><colgroup width="85"></colgroup><tr>
             <td height="17" align="right" sdval="10000" sdnum="1033;0;[$Rp-421]#,##0.00"><font face="Liberation Sans">Rp10,000.00</font></td></tr></table>"#;
-        assert_eq!(table_cells(calc, 1, 1), vec![vec![HtmlCell { text: "Rp10,000.00".into(), num: Some(10000.0) }]]);
+        assert_eq!(table_cells(calc, 1, 1), vec![vec![HtmlCell { text: "Rp10,000.00".into(), num: Some(10000.0), ..HtmlCell::default() }]]);
 
         let quoted_gt = r#"<table><tr><td style='mso-number-format:"\[>=1000\]0"' x:num="1500">1500</td></tr></table>"#;
-        assert_eq!(table_cells(quoted_gt, 1, 1), vec![vec![HtmlCell { text: "1500".into(), num: Some(1500.0) }]]);
+        assert_eq!(table_cells(quoted_gt, 1, 1), vec![vec![HtmlCell { text: "1500".into(), num: Some(1500.0), ..HtmlCell::default() }]]);
     }
 
     #[test]
@@ -434,7 +436,7 @@ mod tests {
         assert!(cells <= MAX_HTML_CELLS, "{cells} cells");
         assert!(rows.iter().all(|r| r.len() <= MAX_SPAN));
         assert_eq!(rows[0].len(), MAX_SPAN, "the first span fills the sheet's width");
-        assert_eq!(rows[0][0], HtmlCell { text: "1".into(), num: Some(1.0) });
+        assert_eq!(rows[0][0], HtmlCell { text: "1".into(), num: Some(1.0), ..HtmlCell::default() });
 
         // Bounded by the pasted text's shape, the same markup yields just that shape.
         let rows = table_cells(&html, 3, 2);

crates/engine/src/cmd.rs

@@ -459,8 +459,11 @@ pub(crate) const TOUCH_LOG_LIMIT: usize = 1_000_000;
 pub(crate) const PROTECTED: &str = "The cell or chart you're trying to change is on a protected sheet.";
 
 /// Refuses an edit that changed what a locked cell on a protected sheet holds (its value or
-/// formula), whichever command made it. Sheets are matched by name, so moving, renaming or
-/// deleting a sheet isn't an edit of its cells.
+/// formula), or that unlocked it, whichever command made it. Sheets are matched by name, so
+/// moving, renaming or deleting a sheet isn't an edit of its cells. A sort or duplicate removal
+/// that moves an unlocked cell with equal content onto a locked one changes no content but would
+/// leave the cell editable, so the effective lock (row and column formats included) is compared
+/// as well.
 fn check_protection(old: &Workbook, new: &Workbook, unlocked: &[(String, String)]) -> Result<()> {
     for sh in &old.sheets {
         if !sh.is_protected() {
@@ -471,7 +474,8 @@ fn check_protection(old: &Workbook, new: &Workbook, unlocked: &[(String, String)
             continue;
         }
         for c in sh.cells.diff(&after.cells) {
-            if !same_content(sh.cell(c), after.cell(c))
+            let unlocked_now = !new.styles.get(after.style_id(c)).protection.locked;
+            if (unlocked_now || !same_content(sh.cell(c), after.cell(c)))
                 && old.styles.get(sh.style_id(c)).protection.locked
                 && let Some(m) = locked_cell_error(sh, c, unlocked)
             {

crates/engine/src/cmd/data/tests.rs

@@ -480,6 +480,45 @@ fn a_list_typed_without_quotes_is_saved_as_a_quoted_list() {
     assert_eq!(sheet_xml(&reopened), xml, "a second save writes the same rules");
 }
 
+#[test]
+fn a_relative_list_source_is_read_from_the_cell_being_checked() {
+    // As in Excel, `=$B1:$B2` on A3:A4,A1:A2 is written for A1 (the top-left cell of all the
+    // areas) and lists B4:B5 at A4. It used to list B1:B2 in every cell.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("range.setValues", json!({"range": "B1:B5", "values": [["a"], ["b"], ["c"], ["d"], ["e"]]})).unwrap();
+    s.execute("data.validation", json!({"range": "A3:A4,A1:A2", "type": "list", "formula1": "=$B1:$B2"})).unwrap();
+    let wb = s.doc().unwrap().wb.clone();
+    let dv = wb.active().unwrap().validations[0].clone();
+    for (cell, items) in [("A1", ["a", "b"]), ("A2", ["b", "c"]), ("A3", ["c", "d"]), ("A4", ["d", "e"])] {
+        let at = CellRef::parse(cell).unwrap();
+        assert_eq!(list_items(&wb, 0, at, &dv), items, "{cell}");
+        for v in ["a", "b", "c", "d", "e"] {
+            assert_eq!(check_validation(&wb, 0, at, v).is_none(), items.contains(&v), "{cell} with {v}");
+        }
+    }
+}
+
+#[test]
+fn a_list_source_that_takes_in_the_cell_does_not_list_the_value_being_typed() {
+    // `=$A1:$A2` on A2:A3 is A1:A2 at A2 and A2:A3 at A3. The list is the one before the entry, as
+    // in Excel; a new value used to land in its own source and pass.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("range.setValues", json!({"range": "A1:A2", "values": [["x"], ["y"]]})).unwrap();
+    s.execute("data.validation", json!({"range": "A2:A3", "type": "list", "formula1": "=$A1:$A2"})).unwrap();
+    let wb = &s.doc().unwrap().wb;
+    for (cell, accepted, refused) in [("A2", &["x", "y"][..], &["new"][..]), ("A3", &["y"], &["x", "new"])] {
+        let at = CellRef::parse(cell).unwrap();
+        for v in accepted {
+            assert!(check_validation(wb, 0, at, v).is_none(), "{cell} refuses {v}");
+        }
+        for v in refused {
+            assert!(check_validation(wb, 0, at, v).is_some(), "{cell} accepts {v}");
+        }
+    }
+}
+
 #[test]
 fn a_rule_with_an_unknown_type_operator_or_error_style_is_refused() {
     // A typo used to give a rule that validates nothing (`type="none"`) or the wrong check,

crates/engine/src/cmd/data/validation.rs

@@ -38,11 +38,18 @@ fn subtract_range(r: RangeRef, cut: &RangeRef) -> Vec<RangeRef> {
 }
 
 /// Removes the cells of `cuts` from every validation, keeping the rest of each rule's ranges.
+/// When the rule's top-left cell goes, its relative formulas are rewritten for the new top-left
+/// cell, so the cells left keep checking the same cells.
 pub(in super::super) fn remove_validation_cells(validations: &mut Vec<Validation>, cuts: &[RangeRef]) {
     for dv in validations.iter_mut() {
+        let before = RangeRef::top_left(&dv.ranges);
         for cut in cuts {
             dv.ranges = dv.ranges.iter().flat_map(|r| subtract_range(*r, cut)).collect();
         }
+        if let (Some(from), Some(to)) = (before, RangeRef::top_left(&dv.ranges)) {
+            dv.f1 = move_rule_formula(&dv.f1, from, to);
+            dv.f2 = dv.f2.take().map(|f| move_rule_formula(&f, from, to));
+        }
     }
     validations.retain(|d| !d.ranges.is_empty());
 }
@@ -145,8 +152,10 @@ fn list_source(f: &str) -> String {
     format!("\"{}\"", t.replace('"', "\"\""))
 }
 
-/// List entries of a list validation (literal or from a range).
-pub fn list_items(wb: &Workbook, sheet: usize, dv: &Validation) -> Vec<String> {
+/// List entries of a list validation (literal or from a range) for the cell `at`. A relative
+/// source is written for the rule's top-left cell and read from `at`, as in Excel (`=$B1:$B3` on
+/// A1:A9 lists B5:B7 at A5).
+pub fn list_items(wb: &Workbook, sheet: usize, at: CellRef, dv: &Validation) -> Vec<String> {
     let f = dv.f1.trim();
     if is_literal_list(f) {
         // A quoted list is a string literal: `""` inside stands for one `"`.
@@ -156,8 +165,8 @@ pub fn list_items(wb: &Workbook, sheet: usize, dv: &Validation) -> Vec<String> {
         };
         return items.split(',').map(|x| x.trim().to_string()).filter(|x| !x.is_empty()).collect();
     }
-    let at = dv.ranges.first().map(|r| r.start).unwrap_or_default();
-    match gridcraft_calc::evaluate(wb, sheet, at, f) {
+    let first = RangeRef::top_left(&dv.ranges).unwrap_or(at);
+    match gridcraft_calc::evaluate(wb, sheet, at, &formula_at(f, first, at)) {
         Value::Array(a) => a.data.iter().filter(|v| !v.is_empty()).map(Value::display).collect(),
         v if !v.is_empty() && !v.is_error() => vec![v.display()],
         _ => vec![],
@@ -175,9 +184,10 @@ pub fn check_validation(wb: &Workbook, sheet: usize, at: CellRef, input: &str) -
         return None;
     }
     let v = gridcraft_core::parse::parse_input(input, wb.date_system).value;
-    // The formulas are written for the first cell of the range and see the value being entered,
+    // The formulas are written for the top-left cell of all the areas and see the value being entered,
     // as in Excel (a custom `=A1>10` on A1:A9 checks A5's new value at A5).
-    let first = dv.ranges.first().map(|r| r.start).unwrap_or(at);
+    let first = RangeRef::top_left(&dv.ranges).unwrap_or(at);
+    let original = wb;
     let entered;
     let wb = if sh.value(at) == v {
         wb
@@ -193,7 +203,9 @@ pub fn check_validation(wb: &Workbook, sheet: usize, at: CellRef, input: &str) -
     let eval = |f: &str| gridcraft_calc::evaluate(wb, sheet, at, &formula_at(f, first, at));
     let num = |f: &str| eval(f).to_number().ok();
     let ok = match dv.kind {
-        ValidationKind::List => list_items(wb, sheet, dv).iter().any(|x| x.eq_ignore_ascii_case(input)),
+        // The list is the one the dropdown showed before the entry, as in Excel: a source that takes
+        // in the cell itself (`=$A1:$A2` on A2:A3 is A2:A3 at A3) doesn't list the value being typed.
+        ValidationKind::List => list_items(original, sheet, at, dv).iter().any(|x| x.eq_ignore_ascii_case(input)),
         ValidationKind::Custom => eval(&dv.f1).to_bool().unwrap_or(false),
         ValidationKind::TextLength => {
             let n = input.chars().count() as f64;

crates/engine/src/cmd/edit.rs

@@ -23,7 +23,7 @@ use cell::{cell_set, range_fill, range_set_values};
 pub(crate) use cell::{check_arg_counts, input_to_cell, is_formula_input, json_to_input, parse_typed_formula};
 #[cfg(test)]
 pub(crate) use clipboard::parse_tsv;
-use clipboard::{clear_clipboard, copy, cut, paste};
+use clipboard::{clear_clipboard, copy, cut, paste, range_move};
 use fill::{auto_fill, fill_dir, fill_series, flash_fill};
 #[cfg(test)]
 use find::replace_ci;
@@ -36,7 +36,7 @@ use go_to::go_to_special;
 use go_to::{GO_TO_MAX_AREAS, GO_TO_RECENT, reference_parts};
 use paste_special::paste_special;
 pub(crate) use paste_special::{rewrite_all_formulas, rewrite_cell_links, rewrite_python_refs};
-use selection::{select_all, select_col, select_region, select_row, selection_move, selection_next, selection_set};
+use selection::{select_all, select_col, select_region, select_row, selection_move, selection_next, selection_next_corner, selection_set};
 
 pub fn specs() -> Vec<CommandSpec> {
     vec![
@@ -62,6 +62,15 @@ pub fn specs() -> Vec<CommandSpec> {
         cmd!(noundo "selection.set", "Select", [], None, "{range: \"A1:B2,D4\" | cell, active?: \"A1\", sheet?}", has_doc, selection_set),
         cmd!(noundo "selection.move", "Move Selection", [], None, "{dr, dc, extend?: bool, jump?: bool (Ctrl+arrow), page?: bool}", has_doc, selection_move),
         cmd!(noundo "selection.next", "Next Cell in Selection", [], None, "{forward?: true, byRow?: false} (Enter/Tab inside a selection)", has_doc, selection_next),
+        cmd!(
+            noundo "selection.nextCorner",
+            "Next Corner of Selection",
+            [],
+            Some("Ctrl+."),
+            "{} (the active cell moves clockwise to the next corner of the selected area, which stays selected)",
+            has_doc,
+            selection_next_corner
+        ),
         cmd!(noundo "edit.selectAll", "Select All", ["Edit"], Some("Cmd+A"), "{} (current region first, then the whole sheet)", has_doc, select_all),
         cmd!(noundo "selection.currentRegion", "Select Current Region", [], Some("Ctrl+Shift+8"), "{}", has_doc, select_region),
         cmd!(noundo "selection.row", "Select Entire Row", [], Some("Shift+Space"), "{}", has_doc, select_row),
@@ -81,6 +90,15 @@ pub fn specs() -> Vec<CommandSpec> {
             has_doc,
             paste
         ),
+        cmd!(
+            "range.move",
+            "Drag and Drop",
+            [],
+            None,
+            "{range?, to: \"C3\", overwrite?: bool} (drag the selection's border: a cut and paste that asks before replacing data unless overwrite)",
+            has_doc,
+            range_move
+        ),
         CommandSpec {
             shortcut_mac: Some("Ctrl+Cmd+V"),
             ..cmd!(
@@ -126,13 +144,13 @@ pub fn specs() -> Vec<CommandSpec> {
             fill_series
         ),
         cmd!("edit.flashFill", "Flash Fill", ["Home", "Editing", "Fill"], Some("Ctrl+E"), "{range?}", has_doc, flash_fill),
-        cmd!(noundo "edit.find", "Find…", ["Home", "Editing", "Find & Select"], Some("Cmd+F"), "{what, matchCase?, wholeCell?, lookIn?: formulas|values, byColumns?, all?: bool, within?: sheet|workbook}", has_doc, find),
+        cmd!(noundo "edit.find", "Find…", ["Home", "Editing", "Find & Select"], Some("Cmd+F"), "{what, matchCase?, wholeCell?, lookIn?: formulas|values, byColumns?, all?: bool, within?: sheet|workbook|selection} (selection: only the selected cells; Find Next keeps them selected and moves the active cell)", has_doc, find),
         cmd!(
             "edit.replace",
             "Replace…",
             ["Home", "Editing", "Find & Select"],
             Some("Ctrl+H"),
-            "{what, with, matchCase?, wholeCell?, all?: true, within?: sheet|workbook} → {replaced, skipped?} (in a Python cell the code is edited; skipped counts Python cells whose code would no longer fit)",
+            "{what, with, matchCase?, wholeCell?, all?: true, within?: sheet|workbook|selection} → {replaced, skipped?} (in a Python cell the code is edited; skipped counts Python cells whose code would no longer fit)",
             has_doc,
             replace
         ),
@@ -244,21 +262,36 @@ fn clear(s: &mut Session, p: &Json, what: &str) -> Result<Json> {
             })
         })
     };
+    // Notes and links aren't cell contents, so the cell comparison that guards a protected sheet
+    // doesn't see them go: a locked cell's are refused here, stored cell or not.
+    if matches!(what, "all" | "comments" | "hyperlinks") {
+        let d = s.doc()?;
+        if let Some(sh) = d.wb.sheet(sheet).filter(|sh| sh.is_protected()) {
+            for &whole in &ranges {
+                let skip = filtered_rows(sh, whole);
+                let notes = matches!(what, "all" | "comments").then(|| sh.comments.keys()).into_iter().flatten();
+                let links = matches!(what, "all" | "hyperlinks").then(|| sh.hyperlinks.keys()).into_iter().flatten();
+                for &c in notes.chain(links).filter(|c| whole.contains(**c) && !skip.contains(&c.row)) {
+                    if d.wb.styles.get(sh.style_id(c)).protection.locked
+                        && let Some(m) = locked_cell_error(sh, c, &d.unlocked_ranges)
+                    {
+                        return Err(EngineError::Other(m));
+                    }
+                }
+            }
+        }
+    }
     edit(s, |cx| {
-        for r in &ranges {
-            let r = match cx.wb.sheet(sheet).and_then(|sh| sh.used_range()) {
-                Some(u) => match r.intersection(&u) {
-                    Some(x) => x,
-                    None => continue,
-                },
-                None => continue,
+        for &whole in &ranges {
+            // Cells are only stored inside the used range. Notes and links are kept apart from
+            // them, so they are cleared over the whole range: one from a file can sit on a cell
+            // with nothing stored in it.
+            let used = cx.wb.sheet(sheet).and_then(|sh| sh.used_range()).and_then(|u| whole.intersection(&u));
+            let skip = cx.wb.sheet(sheet).map(|sh| filtered_rows(sh, whole)).unwrap_or_default();
+            let cells: Vec<(CellRef, Cell)> = match (cx.wb.sheet(sheet), used) {
+                (Some(sh), Some(r)) => sh.cells.iter_range(r).filter(|(c, _)| !skip.contains(&c.row)).map(|(c, x)| (c, x.clone())).collect(),
+                _ => Vec::new(),
             };
-            let skip = cx.wb.sheet(sheet).map(|sh| filtered_rows(sh, r)).unwrap_or_default();
-            let cells: Vec<(CellRef, Cell)> = cx
-                .wb
-                .sheet(sheet)
-                .map(|sh| sh.cells.iter_range(r).filter(|(c, _)| !skip.contains(&c.row)).map(|(c, x)| (c, x.clone())).collect())
-                .unwrap_or_default();
             // Report every stored cell we touch, even beyond a million coordinates in a sparse
             // selection. Removed formula anchors must also reach calc so their spills disappear.
             cx.changed.extend(cells.iter().map(|(c, _)| (sheet, *c)));
@@ -278,6 +311,18 @@ fn clear(s: &mut Session, p: &Json, what: &str) -> Result<Json> {
                     }
                 }
             }
+            let cleared = |c: CellRef| whole.contains(c) && !skip.contains(&c.row);
+            // A removed note or link changes its cell even with nothing stored there.
+            let metadata: Vec<CellRef> = cx
+                .wb
+                .sheet(sheet)
+                .map(|sh| {
+                    let notes = matches!(what, "all" | "comments").then(|| sh.comments.keys()).into_iter().flatten();
+                    let links = matches!(what, "all" | "hyperlinks").then(|| sh.hyperlinks.keys()).into_iter().flatten();
+                    notes.chain(links).copied().filter(|c| cleared(*c)).collect()
+                })
+                .unwrap_or_default();
+            cx.changed.extend(metadata.into_iter().map(|c| (sheet, c)));
             let sh = cx.sheet_mut(sheet)?;
             for (c, mut cell) in cells {
                 match what {
@@ -294,14 +339,15 @@ fn clear(s: &mut Session, p: &Json, what: &str) -> Result<Json> {
                     _ => {}
                 }
             }
-            let cleared = |c: CellRef| r.contains(c) && !skip.contains(&c.row);
             if matches!(what, "all" | "comments") {
                 sh.comments.retain(|c, _| !cleared(*c));
             }
             if matches!(what, "all" | "hyperlinks") {
                 sh.hyperlinks.retain(|c, _| !cleared(*c));
             }
-            if matches!(what, "all" | "formats") {
+            if let Some(r) = used
+                && matches!(what, "all" | "formats")
+            {
                 let mut unmerged = false;
                 sh.merges.retain(|m| {
                     let keep = !r.contains_range(m) || skip.range(m.start.row..=m.end.row).next().is_some();

crates/engine/src/cmd/edit/clipboard.rs

@@ -1,7 +1,8 @@
 use super::cell::input_to_cell;
 use super::paste_special::paste_special;
 use super::{
-    Cell, Clipboard, EngineError, Json, RangeRef, Result, Session, Value, cell_param_on, edit, json, ok, str_param, target_ranges, target_sheet,
+    Cell, Clipboard, EngineError, Json, RangeRef, Result, Session, Value, bad, bool_param, cell_param_on, edit, json, ok, str_param, target_ranges,
+    target_sheet,
 };
 
 // ---------------------------------------------------------------- clipboard
@@ -163,6 +164,40 @@ pub(super) fn paste(s: &mut Session, p: &Json) -> Result<Json> {
     paste_special(s, &json!({"what": "all", "at": p.get("at").cloned().unwrap_or(Json::Null)}))
 }
 
+/// Drag and drop (dragging the selection's border): moves `range` so its top-left cell lands on
+/// `to`, as Cut and Paste would. Like Excel, it asks before replacing cells that hold data or show a
+/// spilled value (other than the moved cells themselves); run it again with `overwrite: true` to replace them. A
+/// refused or failed move leaves the clipboard as it was.
+pub(super) fn range_move(s: &mut Session, p: &Json) -> Result<Json> {
+    let sheet = target_sheet(s, p)?;
+    let to = cell_param_on(s, p, "to", sheet)?.ok_or_else(|| bad("range.move", "missing `to`"))?;
+    let kept = s.clipboard.take();
+    let moved = cut(s, p).and_then(|_| {
+        let src = s.clipboard.as_ref().map(|c| c.range).unwrap_or_default();
+        let dest = to.offset(i64::from(src.height()) - 1, i64::from(src.width()) - 1).map(|end| RangeRef::new(to, end));
+        if bool_param(p, "overwrite") != Some(true)
+            && let Some(dest) = dest
+            && let Some(sh) = s.doc()?.wb.sheet(sheet)
+            && (sh.cells.iter_range(dest).any(|(c, cell)| !src.contains(c) && cell.has_content())
+                || sh.spill.range(dest.start..=dest.end).any(|(c, v)| dest.contains(*c) && !src.contains(*c) && *v != Value::Empty))
+        {
+            return Err(EngineError::Confirm("There's already data here. Do you want to replace it?".into()));
+        }
+        // On the range's sheet, which `paste` would leave to the active one. The selection
+        // belongs to the active sheet: it follows the moved cells only when they are on it.
+        let selection = s.doc()?.selection.clone();
+        let pasted = paste_special(s, &json!({"what": "all", "at": to.a1(), "sheet": sheet}))?;
+        if sheet != s.doc()?.wb.active_sheet() {
+            s.doc_mut()?.selection = selection;
+        }
+        Ok(pasted)
+    });
+    if moved.is_err() {
+        s.clipboard = kept;
+    }
+    moved
+}
+
 fn paste_text(s: &mut Session, p: &Json, text: &str) -> Result<Json> {
     let sheet = target_sheet(s, p)?;
     let at = cell_param_on(s, p, "at", sheet)?.unwrap_or(s.doc()?.selection.current().start);
@@ -226,16 +261,55 @@ pub(crate) fn parse_tsv(text: &str) -> Vec<Vec<String>> {
     let mut row = Vec::new();
     let mut field = String::new();
     let mut chars = text.chars().peekable();
+    // Text read again as unquoted, ahead of the rest of the input: a field that opened with a
+    // quote but turned out not to be quoted.
+    let mut replay: std::collections::VecDeque<char> = std::collections::VecDeque::new();
+    // Text is replayed at most as much as the input is long; past that, quotes are text, so
+    // hostile input full of fields that only look quoted reads in linear time.
+    let mut replay_budget = text.len();
     let mut quoted = false;
     let mut at_start = true;
-    while let Some(c) = chars.next() {
+    // A quoted field's text as it stands in the input, for a field that turns out not to be one.
+    let mut raw = String::new();
+    loop {
+        let c = match replay.pop_front().or_else(|| chars.next()) {
+            Some(c) => c,
+            // A quote that never closes: the field is its text as written.
+            None if quoted => {
+                quoted = false;
+                field.clear();
+                field.push('"');
+                replay_budget = replay_budget.saturating_sub(raw.len());
+                replay.extend(raw.chars().skip(1));
+                raw.clear();
+                continue;
+            }
+            None => break,
+        };
         if quoted {
+            raw.push(c);
             if c == '"' {
-                if chars.peek() == Some(&'"') {
+                let next = replay.front().copied().or_else(|| chars.peek().copied());
+                if next == Some('"') {
                     field.push('"');
-                    chars.next();
+                    raw.push('"');
+                    if replay.pop_front().is_none() {
+                        chars.next();
+                    }
                 } else {
                     quoted = false;
+                    // A field is quoted only when its closing quote ends it, as Excel reads it:
+                    // `"hi" there` is that text, quotes included, and a tab or line break inside
+                    // it still ends the cell, as if the leading quote weren't there.
+                    if !matches!(next, None | Some('\t' | '\n' | '\r')) {
+                        field.clear();
+                        field.push('"');
+                        replay_budget = replay_budget.saturating_sub(raw.len());
+                        let rest: Vec<char> = std::mem::take(&mut raw).chars().skip(1).collect();
+                        for ch in rest.into_iter().rev() {
+                            replay.push_front(ch);
+                        }
+                    }
                 }
             } else {
                 field.push(c);
@@ -243,9 +317,10 @@ pub(crate) fn parse_tsv(text: &str) -> Vec<Vec<String>> {
             continue;
         }
         match c {
-            '"' if at_start => {
+            '"' if at_start && replay_budget > 0 => {
                 quoted = true;
                 at_start = false;
+                raw = String::from('"');
             }
             '\t' => {
                 row.push(std::mem::take(&mut field));

crates/engine/src/cmd/edit/find.rs

@@ -62,6 +62,8 @@ pub(super) fn find(s: &mut Session, p: &Json) -> Result<Json> {
     let by_cols = bool_param(p, "byColumns").unwrap_or(false);
     let all = bool_param(p, "all").unwrap_or(false);
     let workbook = str_param(p, "within") == Some("workbook");
+    // `selection`: only the selected cells of the active sheet, as Excel searches a selected range.
+    let in_selection = str_param(p, "within") == Some("selection");
     s.last_find = Some(p.clone());
     let d = s.doc()?;
     let sheets: Vec<usize> = if workbook { (0..d.wb.sheets.len()).collect() } else { vec![d.wb.active_sheet()] };
@@ -71,6 +73,7 @@ pub(super) fn find(s: &mut Session, p: &Json) -> Result<Json> {
         let mut cells: Vec<(CellRef, String)> = sh
             .cells
             .iter()
+            .filter(|(c, _)| !in_selection || d.selection.contains(*c))
             .filter_map(|(c, cell)| {
                 let text = if values || cell.formula.is_none() || crate::display::formula_hidden(&d.wb, sh, c) {
                     crate::display::cell_text(&d.wb, sh, c)
@@ -100,7 +103,12 @@ pub(super) fn find(s: &mut Session, p: &Json) -> Result<Json> {
     let Some((si, c, t)) = next else { return Err(EngineError::Other("not found".into())) };
     let dd = s.doc_mut()?;
     dd.wb_switch_sheet(si);
-    dd.selection = crate::Selection::at(c);
+    if in_selection {
+        // The range stays selected and the active cell moves through it, as in Excel.
+        dd.selection.active = c;
+    } else {
+        dd.selection = crate::Selection::at(c);
+    }
     Ok(json!({"cell": c.a1(), "sheet": si, "value": t, "count": hits.len()}))
 }
 
@@ -114,6 +122,7 @@ pub(super) fn replace(s: &mut Session, p: &Json) -> Result<Json> {
     let whole = bool_param(p, "wholeCell").unwrap_or(false);
     let all = bool_param(p, "all").unwrap_or(true);
     let workbook = str_param(p, "within") == Some("workbook");
+    let selection = (str_param(p, "within") == Some("selection")).then(|| s.doc().map(|d| d.selection.clone())).transpose()?;
     let active = s.doc()?.selection.active;
     let mut skipped = 0usize;
     let n = edit(s, |cx| {
@@ -123,7 +132,7 @@ pub(super) fn replace(s: &mut Session, p: &Json) -> Result<Json> {
             let cells: Vec<(CellRef, String)> =
                 cx.wb.sheet(si).map(|sh| sh.cells.iter().map(|(c, _)| (c, sh.input_text(c))).collect()).unwrap_or_default();
             for (c, text) in cells {
-                if !all && c != active {
+                if (!all && c != active) || selection.as_ref().is_some_and(|sel| !sel.contains(c)) {
                     continue;
                 }
                 if !matches(&text, &what, case, whole) {

crates/engine/src/cmd/edit/paste_special.rs

@@ -284,7 +284,7 @@ pub(super) fn paste_special(s: &mut Session, p: &Json) -> Result<Json> {
                 crate::cmd::data::remove_validation_cells(&mut sh.validations, &[RangeRef::new(dest, dest)]);
                 if let Some(mut dv) = rule {
                     // Relative references move with the rule, as pasted formulas do.
-                    let first = dv.ranges.first().map_or(sc, |r| r.start);
+                    let first = RangeRef::top_left(&dv.ranges).unwrap_or(sc);
                     dv.f1 = crate::cmd::data::move_rule_formula(&dv.f1, first, dest);
                     dv.f2 = dv.f2.map(|f| crate::cmd::data::move_rule_formula(&f, first, dest));
                     dv.ranges = vec![RangeRef::new(dest, dest)];

crates/engine/src/cmd/edit/selection.rs

@@ -137,6 +137,23 @@ pub(super) fn selection_next(s: &mut Session, p: &Json) -> Result<Json> {
     Ok(json!({"active": d.selection.active.a1()}))
 }
 
+pub(super) fn selection_next_corner(s: &mut Session, _: &Json) -> Result<Json> {
+    let d = s.doc_mut()?;
+    let Some(sheet) = d.wb.active() else { return Err(EngineError::NoDocument) };
+    // A corner in a merged cell lands on its top-left cell. One in a hidden row or column, one
+    // the sheet's protection doesn't let you select, and a merged cell that starts outside the
+    // selected area are skipped.
+    let area = d.selection.current();
+    let stop = |c: CellRef| {
+        Some(sheet.merge_at(c).map_or(c, |m| m.start))
+            .filter(|c| area.contains(*c) && !sheet.is_row_hidden(c.row) && !sheet.is_col_hidden(c.col) && cell_selectable(&d.wb, sheet, *c))
+    };
+    let mut next = d.selection.clone();
+    next.next_corner_by(stop);
+    d.selection = next;
+    Ok(json!({"active": d.selection.active.a1(), "selection": d.selection.a1()}))
+}
+
 pub(super) fn select_all(s: &mut Session, _: &Json) -> Result<Json> {
     let d = s.doc_mut()?;
     let Some(sheet) = d.wb.active() else { return Err(EngineError::NoDocument) };

crates/engine/src/cmd/edit/tests.rs

@@ -307,6 +307,9 @@ fn tsv() {
     assert_eq!(parse_tsv("a\tb\n1\t2\n"), vec![vec!["a", "b"], vec!["1", "2"]]);
     assert_eq!(parse_tsv("\"x\ty\"\tz"), vec![vec!["x\ty", "z"]]);
     assert_eq!(parse_tsv("\"he said \"\"hi\"\"\""), vec![vec!["he said \"hi\""]]);
+    // #2225: a quote that doesn't close the field leaves it as written, as Excel pastes it.
+    assert_eq!(parse_tsv("\"hi\" there\tx\n"), vec![vec!["\"hi\" there", "x"]]);
+    assert_eq!(parse_tsv("say \"hi\"\n"), vec![vec!["say \"hi\""]]);
 }
 
 #[test]
@@ -353,6 +356,74 @@ fn cut_paste_that_overflows_the_grid_moves_nothing() {
     assert_eq!(get(&mut s, "XFD2")["value"], json!(2.0));
 }
 
+#[test]
+fn drag_and_drop_asks_before_replacing_data() {
+    // #3136: dragging column B's border onto column A replaced A without asking.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("range.setValues", json!({"range": "A1:B3", "values": [["Apple", "Kiwi"], ["Pear", "Plum"], ["Fig", "Lime"]]})).unwrap();
+    s.execute("edit.copy", json!({"range": "D9"})).unwrap();
+    let text = |s: &mut Session, a: &str| s.execute("cell.get", json!({"cell": a})).unwrap()["input"].clone();
+    let r = s.execute("range.move", json!({"range": "B:B", "to": "A1"}));
+    let Err(EngineError::Confirm(q)) = r else { panic!("{r:?}") };
+    assert_eq!(q, "There's already data here. Do you want to replace it?");
+    // Nothing moved, and the copy made before is still on the clipboard.
+    assert_eq!(text(&mut s, "A1"), json!("Apple"));
+    assert_eq!(text(&mut s, "B1"), json!("Kiwi"));
+    assert!(s.clipboard.as_ref().is_some_and(|c| !c.cut && c.range.a1() == "D9"));
+    // Confirmed, column B replaces column A.
+    s.execute("range.move", json!({"range": "B:B", "to": "A1", "overwrite": true})).unwrap();
+    assert_eq!(text(&mut s, "A1"), json!("Kiwi"));
+    assert_eq!(text(&mut s, "A3"), json!("Lime"));
+    assert_eq!(text(&mut s, "B1"), json!(""));
+    // Onto empty cells, or overlapping only the moved cells themselves, nothing is asked.
+    s.execute("range.move", json!({"range": "A1:A3", "to": "A2"})).unwrap();
+    assert_eq!(text(&mut s, "A4"), json!("Lime"));
+    s.execute("range.move", json!({"range": "A2:A4", "to": "C2"})).unwrap();
+    assert_eq!(text(&mut s, "C2"), json!("Kiwi"));
+    assert!(s.execute("range.move", json!({"range": "C2"})).is_err(), "`to` is required");
+}
+
+#[test]
+fn drag_and_drop_asks_before_replacing_spilled_values() {
+    // Cells showing a dynamic array's spilled values hold no cell of their own, but they are data.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("cell.set", json!({"cell": "A1", "input": "=SEQUENCE(3)"})).unwrap();
+    s.execute("range.setValues", json!({"range": "C2:C3", "values": [["Kiwi"], ["Plum"]]})).unwrap();
+    let r = s.execute("range.move", json!({"range": "C2:C3", "to": "A2"}));
+    let Err(EngineError::Confirm(q)) = r else { panic!("{r:?}") };
+    assert_eq!(q, "There's already data here. Do you want to replace it?");
+    let sh = s.doc().unwrap().wb.active().unwrap();
+    assert_eq!(sh.value(CellRef::new(2, 2)), Value::text("Plum"));
+    s.execute("range.move", json!({"range": "C2:C3", "to": "A2", "overwrite": true})).unwrap();
+    let sh = s.doc().unwrap().wb.active().unwrap();
+    assert_eq!(sh.value(CellRef::new(1, 0)), Value::text("Kiwi"));
+}
+
+#[test]
+fn drag_and_drop_on_another_sheet_stays_on_that_sheet() {
+    // The move was checked on the range's sheet but pasted on the active one, replacing its data
+    // without asking.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("home.insertSheet", json!({"name": "Two"})).unwrap();
+    s.execute("range.setValues", json!({"range": "B1:B2", "values": [["Kiwi"], ["Plum"]]})).unwrap();
+    s.execute("sheet.activate", json!({"sheet": 0})).unwrap();
+    s.execute("cell.set", json!({"cell": "A1", "input": "Keep"})).unwrap();
+    s.execute("selection.set", json!({"range": "C5"})).unwrap();
+    s.execute("range.move", json!({"range": "Two!B1:B2", "to": "A1"})).unwrap();
+    // Sheet1 stays active with its own selection; the moved cells are on Two.
+    assert_eq!(s.doc().unwrap().wb.active_sheet(), 0);
+    assert_eq!(s.doc().unwrap().selection.a1(), "C5");
+    let wb = &s.doc().unwrap().wb;
+    let two = wb.sheet_index("Two").unwrap();
+    assert_eq!(wb.sheet(0).unwrap().value(CellRef::new(0, 0)), Value::text("Keep"));
+    assert_eq!(wb.sheet(two).unwrap().value(CellRef::new(0, 0)), Value::text("Kiwi"));
+    assert_eq!(wb.sheet(two).unwrap().value(CellRef::new(1, 0)), Value::text("Plum"));
+    assert_eq!(wb.sheet(two).unwrap().value(CellRef::new(0, 1)), Value::Empty);
+}
+
 #[test]
 fn replace_case_insensitive() {
     assert_eq!(replace_ci("Apple apple APPLE", "apple", "pear"), "pear pear pear");
@@ -371,3 +442,141 @@ fn replace_case_insensitive_keeps_text_when_folding_moves_boundaries() {
     let sh = s.doc().unwrap().wb.active().unwrap();
     assert_eq!(sh.value(CellRef::new(0, 0)), Value::text(text));
 }
+
+#[test]
+fn next_corner_of_selection_goes_clockwise_and_anchors_there() {
+    // #1442, as Excel does it: B2 → D2 → D4 → B4 → B2, the area stays selected, and Shift+arrows
+    // then move the corner opposite the new active cell.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("selection.set", json!({"range": "B2:D4", "active": "B2"})).unwrap();
+    let mut seen = Vec::new();
+    for _ in 0..4 {
+        let r = s.execute("selection.nextCorner", json!({})).unwrap();
+        assert_eq!(r["selection"], "B2:D4");
+        seen.push(r["active"].as_str().unwrap().to_string());
+    }
+    assert_eq!(seen, ["D2", "D4", "B4", "B2"]);
+    s.execute("selection.nextCorner", json!({})).unwrap();
+    s.execute("selection.nextCorner", json!({})).unwrap();
+    s.execute("selection.move", json!({"dr": 0, "dc": 1, "extend": true})).unwrap();
+    assert_eq!(s.doc().unwrap().selection.current().a1(), "C2:D4");
+    // One row goes end to end; a single cell stays.
+    s.execute("selection.set", json!({"range": "B2:D2", "active": "B2"})).unwrap();
+    assert_eq!(s.execute("selection.nextCorner", json!({})).unwrap()["active"], "D2");
+    assert_eq!(s.execute("selection.nextCorner", json!({})).unwrap()["active"], "B2");
+    s.execute("selection.set", json!({"range": "C5"})).unwrap();
+    assert_eq!(s.execute("selection.nextCorner", json!({})).unwrap()["active"], "C5");
+}
+
+#[test]
+fn next_corner_skips_corners_the_sheet_protection_does_not_let_you_select() {
+    // With locked cells unselectable, Ctrl+. goes on to the next corner it may select.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("home.lockCell", json!({"range": "B2:C3", "on": false})).unwrap();
+    s.execute("selection.set", json!({"range": "B2:D3", "active": "B2"})).unwrap();
+    s.execute("review.protectSheet", json!({"selectLockedCells": false})).unwrap();
+    let r = s.execute("selection.nextCorner", json!({})).unwrap();
+    assert_eq!((r["active"].as_str(), r["selection"].as_str()), (Some("B3"), Some("B2:D3")), "D2 and D3 are locked");
+    assert_eq!(s.execute("selection.nextCorner", json!({})).unwrap()["active"], "B2");
+}
+
+#[test]
+fn next_corner_stops_once_on_a_merged_corner_at_its_top_left_cell() {
+    // A corner inside a merged cell is that merged cell, whose active cell is its top-left one.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("home.mergeCells", json!({"range": "C2:D2"})).unwrap();
+    s.execute("selection.set", json!({"range": "B2:D3", "active": "B2"})).unwrap();
+    let seen: Vec<String> = (0..4).map(|_| s.execute("selection.nextCorner", json!({})).unwrap()["active"].as_str().unwrap().to_string()).collect();
+    assert_eq!(seen, ["C2", "D3", "B3", "B2"]);
+    // A selection that is one merged cell has no other corner.
+    s.execute("selection.set", json!({"range": "C2:D2", "active": "C2"})).unwrap();
+    assert_eq!(s.execute("selection.nextCorner", json!({})).unwrap()["active"], "C2");
+}
+
+#[test]
+fn next_corner_skips_hidden_corners_and_stays_inside_the_selected_area() {
+    // A corner in a hidden column is passed over, as keyboard moves pass over hidden cells.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("home.hideColumns", json!({"cols": "D:D"})).unwrap();
+    s.execute("selection.set", json!({"range": "B2:D3", "active": "B2"})).unwrap();
+    assert_eq!(s.execute("selection.nextCorner", json!({})).unwrap()["active"], "B3");
+    // Column C selected with B1:C1 merged: its top corner's merged cell starts in column B,
+    // outside the selection, so the active cell doesn't go there.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("home.mergeCells", json!({"range": "B1:C1"})).unwrap();
+    s.execute("selection.set", json!({"cell": "C5"})).unwrap();
+    s.execute("selection.column", json!({})).unwrap();
+    let r = s.execute("selection.nextCorner", json!({})).unwrap();
+    assert_eq!((r["active"].as_str(), r["selection"].as_str()), (Some("C1048576"), Some("C:C")));
+}
+
+#[test]
+fn copy_quotes_only_cells_with_tabs_or_line_breaks() {
+    // #2225: a cell holding a quote was wrapped in quotes on copy; Excel quotes only text with a
+    // tab or line break, and pastes the result back as the same cells.
+    let mut s = Session::new();
+    s.new_workbook();
+    for (cell, input) in [("A1", "say \"hi\""), ("A2", "plain"), ("A3", "\"hi\" there"), ("A4", "x \"q\"\ny"), ("A5", "tab\tinside")] {
+        s.execute("cell.set", json!({"cell": cell, "input": input})).unwrap();
+    }
+    let text = s.execute("edit.copy", json!({"range": "A1:A5"})).unwrap()["text"].as_str().unwrap().to_string();
+    assert_eq!(text, "say \"hi\"\nplain\n\"hi\" there\n\"x \"\"q\"\"\ny\"\n\"tab\tinside\"\n");
+    let rows = parse_tsv(&text);
+    let cells: Vec<&str> = rows.iter().map(|r| r[0].as_str()).collect();
+    assert_eq!(cells, ["say \"hi\"", "plain", "\"hi\" there", "x \"q\"\ny", "tab\tinside"]);
+}
+
+#[test]
+fn a_field_that_is_not_really_quoted_keeps_its_separators() {
+    // A field opening with a quote is quoted only if a closing quote ends it; when it doesn't (or
+    // never closes), the text is read as written, and the tabs and line breaks inside it still
+    // separate cells, as they would have without the leading quote.
+    assert_eq!(parse_tsv("\"a\tb\"x\tc"), vec![vec!["\"a", "b\"x", "c"]]);
+    assert_eq!(parse_tsv("\"a\tb\nc"), vec![vec!["\"a", "b"], vec!["c"]]);
+    assert_eq!(parse_tsv("\"a\tb\tc\n"), vec![vec!["\"a", "b", "c"]]);
+    // Cells copied without quotes (they hold no tab or line break) read back as the same cells.
+    let mut s = Session::new();
+    s.new_workbook();
+    for (cell, input) in [("A1", "'\"a"), ("B1", "b\"x"), ("C1", "c")] {
+        s.execute("cell.set", json!({"cell": cell, "input": input})).unwrap();
+    }
+    let text = s.execute("edit.copy", json!({"range": "A1:C1"})).unwrap()["text"].as_str().unwrap().to_string();
+    assert_eq!(parse_tsv(&text), vec![vec!["\"a", "b\"x", "c"]], "{text:?}");
+    // Many fields that only look quoted: each is replayed at most once (the replay budget is the
+    // input's length), and every one is still its own cell.
+    let hostile = "\"x\t".repeat(50_000);
+    assert_eq!(parse_tsv(&hostile).first().map(Vec::len), Some(50_001));
+}
+
+/// `within: selection` searches only the selected cells, as Excel does with a range selected
+/// (#3224): Find All lists them, Find Next moves the active cell through them and keeps the range
+/// selected, and Replace changes only them.
+#[test]
+fn find_and_replace_within_the_selection() {
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("range.setValues", json!({"range": "A1:B4", "values": [["pear", "pear"], ["plum", "pear"], ["pear", "fig"], ["pear", "pear"]]}))
+        .unwrap();
+    s.execute("selection.set", json!({"range": "B1:B4"})).unwrap();
+    let all = s.execute("edit.find", json!({"what": "pear", "all": true, "within": "selection"})).unwrap();
+    let cells: Vec<&str> = all["results"].as_array().unwrap().iter().filter_map(|r| r["cell"].as_str()).collect();
+    assert_eq!(cells, ["B1", "B2", "B4"], "only column B");
+    assert_eq!(s.execute("edit.find", json!({"what": "pear", "within": "selection"})).unwrap()["cell"], "B2");
+    assert_eq!(s.execute("edit.find", json!({"what": "pear", "within": "selection"})).unwrap()["cell"], "B4");
+    assert_eq!(s.execute("edit.find", json!({"what": "pear", "within": "selection"})).unwrap()["cell"], "B1", "wraps inside the range");
+    let sel = &s.doc().unwrap().selection;
+    assert_eq!((sel.a1(), sel.active.a1()), ("B1:B4".to_string(), "B1".to_string()), "the range stays selected");
+    assert!(s.execute("edit.find", json!({"what": "plum", "within": "selection"})).is_err(), "A2 is outside the range");
+    assert_eq!(s.execute("edit.replace", json!({"what": "pear", "with": "kiwi", "within": "selection"})).unwrap()["replaced"], 3);
+    let sh = s.doc().unwrap().wb.active().unwrap();
+    let at = |a: &str| sh.value(CellRef::parse(a).unwrap());
+    assert_eq!((at("A1"), at("B1"), at("B4"), at("A4")), (Value::text("pear"), Value::text("kiwi"), Value::text("kiwi"), Value::text("pear")));
+    // The sheet scope is unchanged.
+    let all = s.execute("edit.find", json!({"what": "pear", "all": true})).unwrap();
+    assert_eq!(all["count"], 3, "A1, A3 and A4 on the whole sheet");
+}

crates/engine/src/cmd/insert.rs

@@ -1733,7 +1733,13 @@ fn clear_cf(s: &mut Session, p: &Json) -> Result<Json> {
             sh.cond_formats.clear();
         } else {
             for cf in sh.cond_formats.iter_mut() {
+                let before = RangeRef::top_left(&cf.ranges);
                 cf.ranges.retain(|r| !ranges.iter().any(|x| x.intersects(r)));
+                // The relative formulas are written for the top-left cell: when it goes, they're
+                // rewritten for the new one, so the areas left keep reading the same cells.
+                if let (Some(from), Some(to)) = (before, RangeRef::top_left(&cf.ranges)) {
+                    rebase_cf_formulas(&mut cf.rule, from, to);
+                }
             }
             sh.cond_formats.retain(|c| !c.ranges.is_empty());
         }
@@ -1741,6 +1747,19 @@ fn clear_cf(s: &mut Session, p: &Json) -> Result<Json> {
     })
 }
 
+/// Moves the relative references of a rule's per-cell formulas written for `from` to `to`.
+fn rebase_cf_formulas(rule: &mut CfRule, from: CellRef, to: CellRef) {
+    let mv = |f: &str| crate::cmd::data::move_rule_formula(f, from, to);
+    match rule {
+        CfRule::CellIs { a, b, .. } => {
+            *a = mv(a);
+            *b = b.as_deref().map(mv);
+        }
+        CfRule::Expression { formula, .. } => *formula = mv(formula),
+        _ => {}
+    }
+}
+
 fn manage_cf(s: &mut Session, p: &Json) -> Result<Json> {
     let sheet = target_sheet(s, p)?;
     if p.get("delete").is_none() && p.get("moveUp").is_none() && p.get("moveDown").is_none() {

crates/engine/src/cmd/pivot/fields.rs

@@ -507,9 +507,13 @@ pub(super) fn value_settings(s: &mut Session, p: &Json) -> Result<Json> {
         let mut v = cur.clone();
         if let Some(f) = func {
             v.func = f;
-            // An automatic caption follows the function.
-            let auto = auto_name(cur.func, &cur.source_col);
-            if cur.name.eq_ignore_ascii_case(&auto) || cur.name.strip_prefix(auto.as_str()).is_some_and(|r| r.chars().all(|c| c.is_ascii_digit())) {
+            // An automatic caption follows the function. Count Numbers was captioned "Count
+            // Numbers of …" before it took Excel's "Count of …", and saved workbooks still carry it.
+            let is_auto = |base: &str| {
+                cur.name.eq_ignore_ascii_case(base) || cur.name.strip_prefix(base).is_some_and(|r| r.chars().all(|c| c.is_ascii_digit()))
+            };
+            let legacy = cur.func == PivotFunc::CountNumbers && is_auto(&format!("Count Numbers of {}", cur.source_col));
+            if is_auto(&auto_name(cur.func, &cur.source_col)) || legacy {
                 v.name = unique_value_name(pt, &auto_name(f, &cur.source_col), Some(i));
             }
         }

crates/engine/src/cmd/pivot/tests.rs

@@ -168,6 +168,19 @@ fn filters_and_report_filter_rows() {
     assert!(s.execute("pivot.filter", json!({"field": "Product", "selected": []})).is_err());
 }
 
+/// A selection of the most labels allowed (100,000) is looked up once per record, not scanned: the
+/// report still filters case-insensitively.
+#[test]
+fn a_huge_filter_selection_is_matched_through_a_set() {
+    let mut s = sales();
+    s.execute("insert.pivotTable", json!({"rows": ["Product"], "values": ["Sales"], "filters": ["Region"]})).unwrap();
+    let mut selected: Vec<String> = (0..99_999).map(|i| format!("Region {i}")).collect();
+    selected.push("EAST".into());
+    s.execute("pivot.filter", json!({"field": "Region", "selected": selected})).unwrap();
+    let gt = find_row(&s, "Grand Total").unwrap();
+    assert_eq!(val(&s, &CellRef::new(gt, 1).a1()), Value::Number(415.0));
+}
+
 #[test]
 fn show_values_as() {
     let mut s = sales();
@@ -1013,3 +1026,36 @@ fn detail_cells_are_the_cells_show_details_takes() {
     let pt = &d.wb.active().unwrap().pivots[0];
     assert!(crate::pivot::detail_cells(&d.wb, pt, d.wb.active_sheet()).unwrap_err().contains("out of date"));
 }
+
+#[test]
+fn rank_ties_are_dense_and_count_numbers_is_captioned_count_of() {
+    // #1448 items 10 and 12: Excel ranks 5, 4, 3, 3, 4 as 1, 2, 3, 3, 2 (GridCraft gave 1, 2, 4,
+    // 4, 2), and captions a Count Numbers field "Count of Val".
+    let mut s = Session::new();
+    s.new_workbook();
+    let rows = json!([["Key", "Val"], ["A", 5], ["B", 4], ["C", 3], ["D", 3], ["E", 4]]);
+    s.execute("range.setValues", json!({"range": "A1", "values": rows})).unwrap();
+    s.execute("insert.pivotTable", json!({"source": "Sheet1!$A$1:$B$6", "destination": "Sheet1!D3", "rows": ["Key"], "values": ["Val"]})).unwrap();
+    s.execute("pivot.valueSettings", json!({"index": 0, "showAs": "rank"})).unwrap();
+    let ranks: Vec<Value> = ["E4", "E5", "E6", "E7", "E8"].iter().map(|a| val(&s, a)).collect();
+    assert_eq!(ranks, [1.0, 2.0, 3.0, 3.0, 2.0].map(Value::Number));
+    s.execute("pivot.valueSettings", json!({"index": 0, "showAs": "normal", "func": "countNumbers"})).unwrap();
+    assert_eq!(text(&s, "E3"), "Count of Val");
+}
+
+#[test]
+fn legacy_count_numbers_caption_follows_the_function() {
+    // Workbooks saved before Count Numbers was captioned "Count of" carry "Count Numbers of Val";
+    // that is still an automatic caption, so it follows a new function. A custom name stays.
+    let mut s = Session::new();
+    s.new_workbook();
+    let rows = json!([["Key", "Val"], ["A", 5], ["B", 4]]);
+    s.execute("range.setValues", json!({"range": "A1", "values": rows})).unwrap();
+    s.execute("insert.pivotTable", json!({"source": "Sheet1!$A$1:$B$3", "destination": "Sheet1!D3", "rows": ["Key"], "values": ["Val"]})).unwrap();
+    for (legacy, after) in [("Count Numbers of Val", "Sum of Val"), ("Count Numbers of Val2", "Sum of Val"), ("Numbers counted", "Numbers counted")] {
+        s.execute("pivot.valueSettings", json!({"index": 0, "func": "countNumbers", "name": legacy})).unwrap();
+        assert_eq!(text(&s, "E3"), legacy);
+        s.execute("pivot.valueSettings", json!({"index": 0, "func": "sum"})).unwrap();
+        assert_eq!(text(&s, "E3"), after, "{legacy}");
+    }
+}

crates/engine/src/cmd/print/tests.rs

@@ -695,6 +695,79 @@ fn bands_unit() {
     assert!(w.len() > 2);
 }
 
+/// The wrapper `wrap_lines` replaced, re-measuring strings, as the reference for its lines.
+fn wrap_lines_remeasuring(text: &str, font: Font, size: f32, width: f32) -> Vec<String> {
+    let mut out = Vec::new();
+    for para in text.split('\n') {
+        let mut line = String::new();
+        for word in para.split(' ') {
+            let cand = if line.is_empty() { word.to_string() } else { format!("{line} {word}") };
+            if line.is_empty() || gridcraft_pdf::text_width(font, size, &cand) <= width {
+                line = cand;
+            } else {
+                out.push(std::mem::take(&mut line));
+                line = word.to_string();
+            }
+            while gridcraft_pdf::text_width(font, size, &line) > width && line.chars().count() > 1 {
+                let chars: Vec<char> = line.chars().collect();
+                let (mut lo, mut hi) = (1usize, chars.len());
+                while lo < hi {
+                    let mid = lo + (hi - lo).div_ceil(2);
+                    let cut: String = chars[..mid].iter().collect();
+                    if gridcraft_pdf::text_width(font, size, &cut) <= width {
+                        lo = mid;
+                    } else {
+                        hi = mid - 1;
+                    }
+                }
+                if lo == chars.len() {
+                    break;
+                }
+                out.push(chars[..lo].iter().collect());
+                line = chars[lo..].iter().collect();
+            }
+            if out.len() > 2000 {
+                return out;
+            }
+        }
+        out.push(line);
+    }
+    out
+}
+
+#[test]
+fn wrap_lines_matches_the_remeasuring_wrapper() {
+    let texts = [
+        "the quick brown fox jumps",
+        "Supercalifragilistic",
+        "a  b   c\n\nverylongwordthatneedsbreaking short\nend ",
+        "Wide WWWWWWWWWW words, iiiiiiii narrow ones; mixed MMMMiiiiMMMM",
+        "€ ü ß — unicode Ünïcödé text",
+        "",
+        " ",
+    ];
+    for text in texts {
+        for font in [Font::Helvetica, Font::HelveticaBold, Font::Courier] {
+            for (size, width) in [(10.0, 50.0), (10.0, 20.0), (11.0, 1.0), (8.0, 300.0), (12.0, 0.0)] {
+                assert_eq!(wrap_lines(text, font, size, width), wrap_lines_remeasuring(text, font, size, width), "{text:?} {font:?} {size} {width}");
+            }
+        }
+    }
+}
+
+#[test]
+fn wrapping_a_long_word_in_a_narrow_box_stops_at_the_line_limit() {
+    // One character per line: the old wrapper re-measured and copied the rest of the word for
+    // each of the 100,000 lines before checking the limit.
+    let word = "w".repeat(100_000);
+    let lines = wrap_lines(&word, Font::Helvetica, 10.0, 1.0);
+    assert!(lines.len() <= 2002, "{}", lines.len());
+    assert!(lines.iter().all(|l| l == "w"));
+    // A long paragraph in a very wide box is one line.
+    let para = vec!["word"; 50_000].join(" ");
+    assert_eq!(wrap_lines(&para, Font::Helvetica, 10.0, 1.0e9), vec![para.clone()]);
+}
+
 #[test]
 fn center_across_spans_following_empty_center_across_cells() {
     let mut styles = StyleTable::default();

crates/engine/src/cmd/print/text.rs

@@ -3,42 +3,57 @@ use super::{CellRef, Color, Font, HAlign, MAX_COLS, Page, Point, RangeRef, Sheet
 
 const PAD_PX: f32 = 2.0;
 
+/// Most lines [`wrap_lines`] returns (it may return one more, the rest of a paragraph).
+const MAX_WRAP_LINES: usize = 2000;
+
 /// Word-wraps `text` to `width` points.
+///
+/// Widths are kept as running sums of glyph widths (the sum `text_width` makes), so each
+/// character is measured once: re-measuring the line for every word, or the rest of an
+/// over-long word for every piece cut from it, made a long paragraph or word quadratic.
 pub(super) fn wrap_lines(text: &str, font: Font, size: f32, width: f32) -> Vec<String> {
+    let units_of = |s: &str| -> u64 { s.chars().map(|c| u64::from(font.char_width(c))).sum() };
+    let fits = |units: u64| units as f32 * size / 1000.0 <= width;
+    let space = units_of(" ");
     let mut out = Vec::new();
     for para in text.split('\n') {
         let mut line = String::new();
+        let mut line_units: u64 = 0;
         for word in para.split(' ') {
-            let cand = if line.is_empty() { word.to_string() } else { format!("{line} {word}") };
-            if line.is_empty() || gridcraft_pdf::text_width(font, size, &cand) <= width {
-                line = cand;
+            let word_units = units_of(word);
+            if line.is_empty() {
+                line.push_str(word);
+                line_units = word_units;
+            } else if fits(line_units + space + word_units) {
+                line.push(' ');
+                line.push_str(word);
+                line_units += space + word_units;
             } else {
                 out.push(std::mem::take(&mut line));
-                line = word.to_string();
+                line.push_str(word);
+                line_units = word_units;
             }
-            // Break a single over-long word by characters. The cut that fits is found by binary
-            // search (each try measures one candidate prefix), so an over-long word costs
-            // O(n log n) measurements instead of re-measuring the whole cut per character for
-            // every emitted line (`a` × 100k pasted text would be cubic worst case).
-            while gridcraft_pdf::text_width(font, size, &line) > width && line.chars().count() > 1 {
-                let chars: Vec<char> = line.chars().collect();
-                let (mut lo, mut hi) = (1usize, chars.len());
-                while lo < hi {
-                    let mid = lo + (hi - lo).div_ceil(2);
-                    let cut: String = chars[..mid].iter().collect();
-                    if gridcraft_pdf::text_width(font, size, &cut) <= width {
-                        lo = mid;
-                    } else {
-                        hi = mid - 1;
+            // Break a single over-long word by characters: each piece is the longest that fits
+            // (at least one character).
+            if !fits(line_units) && line.chars().nth(1).is_some() {
+                let mut piece = String::new();
+                let mut units: u64 = 0;
+                for c in line.chars() {
+                    let w = u64::from(font.char_width(c));
+                    if !piece.is_empty() && !fits(units + w) {
+                        out.push(std::mem::take(&mut piece));
+                        units = 0;
+                        if out.len() > MAX_WRAP_LINES {
+                            return out;
+                        }
                     }
+                    piece.push(c);
+                    units += w;
                 }
-                if lo == chars.len() {
-                    break;
-                }
-                out.push(chars[..lo].iter().collect());
-                line = chars[lo..].iter().collect();
+                line = piece;
+                line_units = units;
             }
-            if out.len() > 2000 {
+            if out.len() > MAX_WRAP_LINES {
                 return out;
             }
         }

crates/engine/src/cmd/sheet.rs

@@ -398,10 +398,10 @@ fn move_columns(s: &mut Session, p: &Json) -> Result<Json> {
     {
         return Err(EngineError::Other("To prevent possible loss of data, columns cannot be shifted off of the worksheet.".into()));
     }
-    // The checks must authorize the sheet this command modifies (`target_sheet`), not whatever
-    // sheet is active: both carry the command's own `sheet` parameter on.
-    check_lines_protection(s, &json!({"cols": RangeRef::cols(before, before).a1(), "sheet": p.get("sheet")}), Axis::Cols, before, count, true)?;
-    check_lines_protection(s, &json!({"cols": RangeRef::cols(from, end - 1).a1(), "sheet": p.get("sheet")}), Axis::Cols, from, count, false)?;
+    // The checks must authorize the sheet this command modifies, not whatever sheet is active:
+    // both get the index `target_sheet` resolved (from `sheet`, or a `Sheet!` range or cell).
+    check_lines_protection(s, &json!({"cols": RangeRef::cols(before, before).a1(), "sheet": sheet}), Axis::Cols, before, count, true)?;
+    check_lines_protection(s, &json!({"cols": RangeRef::cols(from, end - 1).a1(), "sheet": sheet}), Axis::Cols, from, count, false)?;
 
     let moved_from = if before <= from { from + count } else { from };
     if moved_from.checked_add(count).is_none_or(|end| end > MAX_COLS) {

crates/engine/src/cmd/view.rs

@@ -40,6 +40,27 @@ pub fn specs() -> Vec<CommandSpec> {
         cmd!("view.showZeros", "Show Zeros", [], None, "{on?}", has_doc, |s, p| sheet_flag(s, p, "zeros")),
         cmd!("view.showOutlineSymbols", "Show Outline Symbols", [], Some("Ctrl+8"), "{on?}", has_doc, |s, p| sheet_flag(s, p, "outlineSymbols")),
         cmd!("view.showObjects", "Show Objects", [], Some("Ctrl+6"), "{on?}", has_doc, show_objects),
+        cmd!(
+            "view.showSheetTabs",
+            "Show Sheet Tabs",
+            [],
+            None,
+            "{on?} (File › Options › Advanced, this workbook; toggles without `on`)",
+            has_doc,
+            |s, p| { workbook_view_flag(s, p, "sheetTabs") }
+        ),
+        cmd!(
+            "view.showHorizontalScrollBar",
+            "Show Horizontal Scroll Bar",
+            [],
+            None,
+            "{on?} (this workbook; toggles without `on`)",
+            has_doc,
+            |s, p| { workbook_view_flag(s, p, "horizontal") }
+        ),
+        cmd!("view.showVerticalScrollBar", "Show Vertical Scroll Bar", [], None, "{on?} (this workbook; toggles without `on`)", has_doc, |s, p| {
+            workbook_view_flag(s, p, "vertical")
+        }),
         cmd!("view.rightToLeft", "Sheet Right-to-Left", ["Page Layout", "Sheet Options"], None, "{on?}", has_doc, |s, p| sheet_flag(s, p, "rtl")),
         cmd!("view.zoom", "Zoom", ["View", "Zoom"], None, "{percent: 10..400}", has_doc, zoom),
         cmd!("view.zoom100", "100%", ["View", "Zoom"], None, "{}", has_doc, |s, _| zoom(s, &json!({"percent": 100}))),
@@ -189,6 +210,21 @@ fn sheet_flag(s: &mut Session, p: &Json, which: &str) -> Result<Json> {
     })
 }
 
+/// File › Options › Advanced › Display options for this workbook: the sheet tabs and the two
+/// scroll bars, saved with the workbook (`<workbookView showSheetTabs … />`).
+fn workbook_view_flag(s: &mut Session, p: &Json, which: &str) -> Result<Json> {
+    edit(s, |cx| {
+        let view = &mut cx.wb.view;
+        let slot = match which {
+            "sheetTabs" => &mut view.show_sheet_tabs,
+            "horizontal" => &mut view.show_horizontal_scroll,
+            _ => &mut view.show_vertical_scroll,
+        };
+        *slot = bool_param(p, "on").unwrap_or(!*slot);
+        Ok(json!({"on": *slot}))
+    })
+}
+
 /// Ctrl+6: hides every object, or shows them again. Placeholders (from a file) count as shown.
 fn show_objects(s: &mut Session, p: &Json) -> Result<Json> {
     use gridcraft_model::ShowObjects;

crates/engine/src/display.rs

@@ -156,7 +156,9 @@ pub fn range_text(wb: &Workbook, sheet: usize, r: RangeRef) -> String {
             }
             first = false;
             let t = cell_text(wb, sh, CellRef::new(row, col));
-            if t.contains(['\t', '\n', '"']) {
+            // Like Excel, only text with a tab or line break is quoted (its quotes doubled);
+            // `say "hi"` is copied as it is (#2225).
+            if t.contains(['\t', '\n', '\r']) {
                 out.push('"');
                 out.push_str(&t.replace('"', "\"\""));
                 out.push('"');

crates/engine/src/io.rs

@@ -1,4 +1,4 @@
-//! Opening and saving files: XLSX, legacy XLS import, XLSB and ODS data import, CSV/TSV, JSON (debug), HTML export.
+//! Opening and saving files: XLSX, legacy XLS import, XLSB and ODS data import, SYLK import, CSV/TSV, JSON (debug), HTML export.
 
 use std::fmt::Write as _;
 
@@ -7,6 +7,8 @@ use gridcraft_model::{Sheet, Workbook};
 
 use crate::{EngineError, Result};
 
+mod sylk;
+
 /// File formats GridCraft reads or writes.
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub enum FileKind {
@@ -19,6 +21,8 @@ pub enum FileKind {
     Tsv,
     Json,
     Html,
+    /// SYLK symbolic link text (import only).
+    Sylk,
 }
 
 impl FileKind {
@@ -33,6 +37,7 @@ impl FileKind {
             "tsv" | "tab" | "txt" => FileKind::Tsv,
             "json" | "scjson" => FileKind::Json,
             "html" | "htm" => FileKind::Html,
+            "slk" => FileKind::Sylk,
             _ => return None,
         })
     }
@@ -291,6 +296,9 @@ fn read_plain(name: &str, bytes: &[u8], csv_as_text: bool) -> Result<(Workbook,
         })?;
         return Ok((wb, report.warnings));
     }
+    if let Some(read) = read_html_table(name, kind, bytes, csv_as_text) {
+        return read;
+    }
     match kind {
         Some(FileKind::Json) => {
             let mut wb: Workbook = serde_json::from_slice(bytes).map_err(|e| EngineError::Other(format!("not a GridCraft JSON workbook: {e}")))?;
@@ -310,6 +318,11 @@ fn read_plain(name: &str, bytes: &[u8], csv_as_text: bool) -> Result<(Workbook,
             }
             Ok((wb, warnings))
         }
+        Some(FileKind::Sylk) => {
+            let (mut wb, warnings) = sylk::read(name, bytes)?;
+            rename_first_sheet(&mut wb, name);
+            Ok((wb, warnings))
+        }
         Some(FileKind::Tsv) => {
             let opts = gridcraft_xlsx::CsvOptions { delimiter: b'\t', parse_values: !csv_as_text, ..Default::default() };
             let (mut wb, report) = gridcraft_xlsx::read_csv_with_report(bytes, &opts).map_err(|e| EngineError::Other(e.to_string()))?;
@@ -346,9 +359,112 @@ fn part_too_large_message(name: &str, part: &str, size: u64) -> String {
     )
 }
 
+/// How much of a text file is read to tell whether it is a web page.
+const HTML_SNIFF_BYTES: usize = 64 << 10;
+
+/// A web page that holds a table, whatever its extension: a web app's "Export to Excel" is often
+/// HTML saved as `.xls` (#3166). Excel opens its table as a sheet (after warning that the format
+/// and extension don't match): the cells read like typed input (or as text with `csv_as_text`),
+/// header cells (`<th>`) are bold and centred, and the sheet takes the name the page gives it
+/// (`<x:Name>`) or the file's. `None` when the bytes aren't such a page.
+fn read_html_table(name: &str, kind: Option<FileKind>, bytes: &[u8], csv_as_text: bool) -> Option<Result<(Workbook, Vec<String>)>> {
+    // Every other text file (CSV, TSV, JSON) passes through here: look at the start only, and decode
+    // the whole file once it is known to be a page within the size a text import takes.
+    if matches!(kind, Some(FileKind::Json)) || bytes.len() > gridcraft_xlsx::MAX_CSV_BYTES {
+        return None;
+    }
+    let start = gridcraft_xlsx::decode_text(bytes.get(..HTML_SNIFF_BYTES).unwrap_or(bytes));
+    // Comments an exporter writes before the page (`<!-- ... -->`) don't make it something else.
+    let mut rest = start.trim_start_matches('\u{feff}').trim_start();
+    while let Some(after) = rest.strip_prefix("<!--") {
+        match after.find("-->").and_then(|end| after.get(end + 3..)) {
+            Some(more) => rest = more.trim_start(),
+            None => break,
+        }
+    }
+    let head: String = rest.chars().take(16).collect::<String>().to_ascii_lowercase();
+    if !["<!doctype html", "<html", "<table", "<head", "<body", "<meta"].iter().any(|t| head.starts_with(t)) {
+        return None;
+    }
+    // Decoded as a CSV is (BOM, UTF-8, else Windows-1252/1256), so a legacy page keeps its letters.
+    let text = gridcraft_xlsx::decode_text(bytes);
+    let rows = crate::clip_html::table_cells(&text, gridcraft_core::MAX_ROWS as usize, gridcraft_core::MAX_COLS as usize);
+    if rows.iter().all(Vec::is_empty) {
+        return None;
+    }
+    // The cells go through the CSV reader, so numbers, dates and text read exactly as they do there.
+    let mut tsv = String::new();
+    for row in &rows {
+        let fields: Vec<String> = row
+            .iter()
+            .map(|cell| {
+                // The number the page recorded (`x:num`) only when values are read; as text, the
+                // cell keeps the text it shows.
+                let field = match cell.num.filter(|_| !csv_as_text) {
+                    Some(n) => gridcraft_core::number_to_text(n),
+                    // Whitespace is already collapsed; non-breaking spaces stay, as in Excel.
+                    None => cell.text.clone(),
+                };
+                if field.contains(['\t', '\n', '\r', '"']) { format!("\"{}\"", field.replace('"', "\"\"")) } else { field }
+            })
+            .collect();
+        tsv.push_str(&fields.join("\t"));
+        tsv.push('\n');
+    }
+    let opts = gridcraft_xlsx::CsvOptions { delimiter: b'\t', parse_values: !csv_as_text, ..Default::default() };
+    let read = gridcraft_xlsx::read_csv_with_report(tsv.as_bytes(), &opts).map_err(|e| EngineError::Other(e.to_string()));
+    Some(read.map(|(mut wb, report)| {
+        wb.csv_delimiter = None;
+        // Header cells are bold and centred on top of the style the CSV reader gave them, so a
+        // date in a header keeps its date format.
+        let headers: Vec<CellRef> = rows
+            .iter()
+            .enumerate()
+            .flat_map(|(r, row)| row.iter().enumerate().filter(|(_, cell)| cell.header && !cell.text.trim().is_empty()).map(move |(c, _)| CellRef::new(r as u32, c as u32)))
+            .collect();
+        let mut bold: std::collections::HashMap<gridcraft_model::StyleId, gridcraft_model::StyleId> = std::collections::HashMap::new();
+        for at in headers {
+            let Some(base) = wb.sheet(0).map(|sh| sh.style_id(at)) else { continue };
+            let id = *bold.entry(base).or_insert_with(|| {
+                wb.styles.derive(base, |st| {
+                    st.font.bold = true;
+                    st.align.h = gridcraft_model::HAlign::Center;
+                })
+            });
+            if let Some(sh) = wb.sheet_mut(0) {
+                sh.set_style(at, id);
+            }
+        }
+        let page_name = find_between(&text, "<x:Name>", "</x:Name>").map(|n| crate::clip_html::normalized(n.trim()));
+        match page_name.filter(|n| !n.is_empty()) {
+            Some(sheet) => set_first_sheet_name(&mut wb, &sheet),
+            None => rename_first_sheet(&mut wb, name),
+        }
+        let mut warnings = report.warnings;
+        if !matches!(kind, Some(FileKind::Html)) {
+            warnings.insert(0, format!("'{name}' is a web page (HTML), not a workbook in the format its name says: its table was opened as a sheet. Save as .xlsx to keep your changes."));
+        }
+        (wb, warnings)
+    }))
+}
+
+/// The text between the first `open` and the `close` after it, matched case-insensitively.
+fn find_between<'a>(text: &'a str, open: &str, close: &str) -> Option<&'a str> {
+    let lower = text.to_ascii_lowercase();
+    let start = lower.find(&open.to_ascii_lowercase())?.checked_add(open.len())?;
+    let len = lower.get(start..)?.find(&close.to_ascii_lowercase())?;
+    text.get(start..start.checked_add(len)?)
+}
+
 /// A CSV opens as a sheet named after the file (like Excel).
 fn rename_first_sheet(wb: &mut Workbook, path: &str) {
     let stem = std::path::Path::new(path).file_stem().and_then(std::ffi::OsStr::to_str).unwrap_or("Sheet1");
+    set_first_sheet_name(wb, stem);
+}
+
+/// Names the first sheet `name`, without the characters a sheet name can't hold and cut to 31
+/// characters; an empty or reserved result keeps the default name.
+fn set_first_sheet_name(wb: &mut Workbook, stem: &str) {
     let clean: String = stem.chars().filter(|c| !matches!(c, ':' | '\\' | '/' | '?' | '*' | '[' | ']')).take(31).collect();
     let clean = clean.trim_matches('\'').to_string();
     // "History" is reserved (see `Workbook::check_sheet_name`): keep the default name instead.
@@ -389,6 +505,9 @@ pub fn save_bytes_as(wb: &Workbook, path: &str, kind: FileKind) -> Result<Vec<u8
         }
         FileKind::Xlsb => Err(EngineError::Other("XLSB is supported for data import only. Save as .xlsx or another supported export format.".into())),
         FileKind::Ods => Err(EngineError::Other("ODS is supported for data import only. Save as .xlsx or another supported export format.".into())),
+        FileKind::Sylk => {
+            Err(EngineError::Other("SYLK (.slk) is supported for import only. Save as .xlsx or another supported export format.".into()))
+        }
         // A workbook read from CSV keeps the separator it was read with (a `;` file stays `;`).
         FileKind::Csv => wb.sheet(sheet).map(|sh| csv(wb, sh, wb.csv_delimiter.unwrap_or(b','))).transpose().map(Option::unwrap_or_default),
         FileKind::Tsv => wb.sheet(sheet).map(|sh| csv(wb, sh, b'\t')).transpose().map(Option::unwrap_or_default),

crates/engine/src/io/sylk.rs

@@ -0,0 +1,328 @@
+//! SYLK (`.slk`) import: the symbolic link text format older spreadsheets and some legacy systems
+//! export. One record per line, fields separated by `;` (`;;` is a literal semicolon):
+//!
+//! - `ID` starts the file; `E` ends it.
+//! - `C;Y<row>;X<col>;K<value>;E<formula>` is a cell. `Y` and `X` may be left out to stay on the
+//!   current row or column. `K` is a number, `"text"`, `TRUE`/`FALSE` or an error; `E` is a
+//!   formula in R1C1 notation; `S;R<row>;C<col>` shares the formula of another cell.
+//! - `P;P<code>` adds a number format to the file's list; `F;P<n>;Y<row>;X<col>` gives a cell the
+//!   n-th format (0-based), and `F;W<first> <last> <width>` sets column widths in characters.
+//!
+//! Other records (fonts, options, window settings) are skipped. Formulas are converted to A1 with
+//! the same relative and absolute references, as Excel does when it opens the file.
+
+use std::collections::HashMap;
+use std::sync::Arc;
+
+use gridcraft_core::{CellError, CellRef, MAX_COLS, MAX_ROWS, Value, col_to_letters};
+use gridcraft_model::{Cell, Formula, NumFmt, Sheet, Style, Workbook};
+
+use crate::{EngineError, Result};
+
+/// The largest SYLK file read, as for other text imports: past it the file is refused.
+const MAX_BYTES: usize = 512 << 20;
+/// Column-width records kept from one file; each can cover every column.
+const MAX_WIDTH_RECORDS: usize = 1024;
+
+/// Reads a SYLK file into a one-sheet workbook. Returns the workbook and its warnings.
+pub fn read(name: &str, bytes: &[u8]) -> Result<(Workbook, Vec<String>)> {
+    if bytes.len() > MAX_BYTES {
+        return Err(EngineError::Other(format!("We can't open '{name}': the SYLK file is larger than {} MB.", MAX_BYTES >> 20)));
+    }
+    let text = match std::str::from_utf8(bytes) {
+        Ok(s) => s.to_string(),
+        // Older exports are in a single-byte code page: keep each byte as its Latin-1 character.
+        Err(_) => bytes.iter().map(|&b| char::from(b)).collect(),
+    };
+    let text = text.strip_prefix('\u{feff}').unwrap_or(&text);
+    if !text.starts_with("ID") {
+        return Err(EngineError::Other(format!("We can't open '{name}': it isn't a SYLK file (it doesn't start with an ID record).")));
+    }
+    let mut sheet = Sheet::new("Sheet1");
+    let mut formats: Vec<String> = Vec::new();
+    // Cells' number formats by index into `formats`, applied once every format is known.
+    let mut cell_formats: Vec<(CellRef, usize)> = Vec::new();
+    let mut formulas: HashMap<CellRef, String> = HashMap::new();
+    let mut widths: Vec<(u32, u32, f64)> = Vec::new();
+    let (mut row, mut col) = (0u32, 0u32);
+    let mut skipped = 0usize;
+    for line in text.lines() {
+        let fields = split_fields(line);
+        let Some((kind, rest)) = fields.split_first() else { continue };
+        match kind.as_str() {
+            "C" => {
+                let (mut value, mut formula, mut shared) = (None, None, None::<(Option<u32>, Option<u32>)>);
+                let mut bad = false;
+                for f in rest {
+                    let (tag, arg) = f.split_at(f.chars().next().map_or(0, char::len_utf8));
+                    match tag {
+                        "Y" => match position(arg, MAX_ROWS) {
+                            Some(r) => row = r,
+                            None => bad = true,
+                        },
+                        "X" => match position(arg, MAX_COLS) {
+                            Some(c) => col = c,
+                            None => bad = true,
+                        },
+                        "K" => value = Some(parse_value(arg)),
+                        "E" => formula = Some(arg.to_string()),
+                        "S" => shared = Some((None, None)),
+                        // In a shared-formula cell, R and C name the cell whose formula it shares.
+                        "R" if shared.is_some() => shared = shared.map(|(_, c)| (position(arg, MAX_ROWS), c)),
+                        "C" if shared.is_some() => shared = shared.map(|(r, _)| (r, position(arg, MAX_COLS))),
+                        _ => {}
+                    }
+                }
+                if bad {
+                    skipped += 1;
+                    continue;
+                }
+                let at = CellRef::new(row, col);
+                if let Some((Some(r), Some(c))) = shared {
+                    formula = formulas.get(&CellRef::new(r, c)).cloned();
+                }
+                let mut cell = sheet.cell(at).cloned().unwrap_or_else(|| Cell::value(Value::Empty));
+                if let Some(v) = value {
+                    cell.value = v;
+                }
+                if let Some(r1c1) = formula {
+                    let a1 = r1c1_formula_to_a1(&r1c1, at);
+                    let f = Formula::new(&a1);
+                    if f.expr.is_some() {
+                        cell.formula = Some(Arc::new(f));
+                        formulas.insert(at, r1c1);
+                    } else {
+                        skipped += 1;
+                    }
+                }
+                sheet.set_cell(at, cell);
+            }
+            "F" => {
+                let mut format = None;
+                for f in rest {
+                    let (tag, arg) = f.split_at(f.chars().next().map_or(0, char::len_utf8));
+                    match tag {
+                        "Y" => row = position(arg, MAX_ROWS).unwrap_or(row),
+                        "X" => col = position(arg, MAX_COLS).unwrap_or(col),
+                        "P" => format = arg.parse::<usize>().ok(),
+                        "W" => {
+                            let mut parts = arg.split_whitespace();
+                            if let (Some(first), Some(last), Some(width)) = (parts.next(), parts.next(), parts.next())
+                                && let (Some(first), Some(last), Ok(width)) =
+                                    (position(first, MAX_COLS), position(last, MAX_COLS), width.parse::<f64>())
+                                && first <= last
+                                && (0.0..=255.0).contains(&width)
+                                // A file of width records can't make the import loop over every column
+                                // again and again.
+                                && widths.len() < MAX_WIDTH_RECORDS
+                            {
+                                widths.push((first, last, width));
+                            }
+                        }
+                        _ => {}
+                    }
+                }
+                if let Some(format) = format {
+                    cell_formats.push((CellRef::new(row, col), format));
+                }
+            }
+            // Number formats only: `P;F…` and `P;E…` are fonts.
+            "P" => {
+                if let Some(code) = rest.first().and_then(|f| f.strip_prefix('P')) {
+                    formats.push(code.to_string());
+                }
+            }
+            "E" => break,
+            _ => {}
+        }
+    }
+    for (first, last, width) in widths {
+        let size = crate::cmd::format::chars_to_points(width) as f32;
+        for c in first..=last {
+            sheet.cols.entry(c).or_default().size = Some(size);
+        }
+    }
+    let mut wb = Workbook::new();
+    let mut styles = HashMap::new();
+    for (at, index) in cell_formats {
+        let Some(code) = formats.get(index).filter(|code| !code.is_empty() && *code != "General") else { continue };
+        let style = *styles.entry(index).or_insert_with(|| wb.styles.intern(Style { num_fmt: NumFmt(Arc::from(code.as_str())), ..Style::default() }));
+        let mut cell = sheet.cell(at).cloned().unwrap_or_else(|| Cell::value(Value::Empty));
+        cell.style = style;
+        sheet.set_cell(at, cell);
+    }
+    if let Some(first) = wb.sheet_mut(0) {
+        sheet.name = std::mem::take(&mut first.name);
+        *first = sheet;
+    }
+    let mut warnings = Vec::new();
+    if skipped > 0 {
+        warnings.push(format!("{name}: {skipped} SYLK records GridCraft couldn't read were skipped"));
+    }
+    Ok((wb, warnings))
+}
+
+/// A record's fields: `;` separates them and `;;` is a literal semicolon.
+fn split_fields(line: &str) -> Vec<String> {
+    let mut fields = vec![String::new()];
+    let mut chars = line.trim_end_matches('\r').chars().peekable();
+    while let Some(c) = chars.next() {
+        if c == ';' {
+            if chars.peek() == Some(&';') {
+                chars.next();
+                if let Some(f) = fields.last_mut() {
+                    f.push(';');
+                }
+            } else {
+                fields.push(String::new());
+            }
+        } else if let Some(f) = fields.last_mut() {
+            f.push(c);
+        }
+    }
+    fields
+}
+
+/// A 1-based row or column number → 0-based, within `max`.
+fn position(arg: &str, max: u32) -> Option<u32> {
+    arg.trim().parse::<u32>().ok().filter(|n| (1..=max).contains(n)).map(|n| n - 1)
+}
+
+/// A `K` value: `"text"` (everything between the first and the last quote, as written), a
+/// boolean, an error or a number.
+fn parse_value(arg: &str) -> Value {
+    if let Some(text) = arg.strip_prefix('"') {
+        let text = text.strip_suffix('"').unwrap_or(text);
+        return Value::Text(Arc::from(text));
+    }
+    if arg.eq_ignore_ascii_case("TRUE") || arg.eq_ignore_ascii_case("FALSE") {
+        return Value::Bool(arg.eq_ignore_ascii_case("TRUE"));
+    }
+    if let Some(e) = CellError::parse(arg) {
+        return Value::Error(e);
+    }
+    match arg.trim().parse::<f64>() {
+        Ok(n) if n.is_finite() => Value::Number(n),
+        _ => Value::Text(Arc::from(arg)),
+    }
+}
+
+/// One part of an R1C1 reference: `R`/`C` followed by an absolute number, a bracketed offset or
+/// nothing (the cell's own row or column).
+#[derive(Clone, Copy, Debug, PartialEq)]
+enum Part {
+    Absolute(u32),
+    Relative(i64),
+}
+
+impl Part {
+    /// The 0-based index and whether it is absolute, or `None` when it falls off the sheet.
+    fn resolve(self, base: u32, max: u32) -> Option<(u32, bool)> {
+        match self {
+            Part::Absolute(n) => (1..=max).contains(&n).then(|| (n - 1, true)),
+            Part::Relative(k) => i64::from(base).checked_add(k).and_then(|v| u32::try_from(v).ok()).filter(|v| *v < max).map(|v| (v, false)),
+        }
+    }
+}
+
+/// Parses the number after `R` or `C` at `i`: digits, `[offset]` or nothing. Returns the part and
+/// the index after it, or `None` when the text isn't a reference part.
+fn parse_part(chars: &[char], i: usize) -> Option<(Part, usize)> {
+    match chars.get(i) {
+        Some('[') => {
+            let close = chars[i..].iter().position(|&c| c == ']')? + i;
+            let inner: String = chars[i + 1..close].iter().collect();
+            Some((Part::Relative(inner.parse().ok()?), close + 1))
+        }
+        Some(c) if c.is_ascii_digit() => {
+            let end = chars[i..].iter().position(|c| !c.is_ascii_digit()).map_or(chars.len(), |p| p + i);
+            let n: String = chars[i..end].iter().collect();
+            Some((Part::Absolute(n.parse().unwrap_or(u32::MAX)), end))
+        }
+        _ => Some((Part::Relative(0), i)),
+    }
+}
+
+fn is_word_char(c: char) -> bool {
+    c.is_alphanumeric() || matches!(c, '_' | '.' | '\\' | '?' | '$')
+}
+
+/// Rewrites the R1C1 references in a SYLK formula as A1 references for the cell at `at`:
+/// `RC[-1]` → `B2`, `R1C1` → `$A$1`, `R[-2]C:R[-1]C` → `D2:D3`, a whole column `C4` → `$D:$D` and
+/// a whole row `R3` → `$3:$3`. Text in quotes and quoted sheet names are left alone; a reference
+/// off the sheet becomes `#REF!`.
+pub(crate) fn r1c1_formula_to_a1(formula: &str, at: CellRef) -> String {
+    let chars: Vec<char> = formula.chars().collect();
+    let mut out = String::with_capacity(formula.len());
+    let mut i = 0;
+    while i < chars.len() {
+        let c = chars[i];
+        if c == '"' || c == '\'' {
+            // Copy the quoted run as it is; a doubled quote stays inside it.
+            let mut j = i + 1;
+            while j < chars.len() && !(chars[j] == c && chars.get(j + 1) != Some(&c)) {
+                j += if chars[j] == c { 2 } else { 1 };
+            }
+            let stop = (j + 1).min(chars.len());
+            out.extend(&chars[i..stop]);
+            i = stop;
+            continue;
+        }
+        let starts_word = i == 0 || !is_word_char(chars[i - 1]);
+        if starts_word
+            && matches!(c, 'R' | 'r' | 'C' | 'c')
+            && let Some((text, next)) = reference_at(&chars, i, at)
+        {
+            out.push_str(&text);
+            i = next;
+            continue;
+        }
+        // Copy the rest of a word as it is, so `ROUND` or `Sheet2` isn't read as a reference.
+        if is_word_char(c) {
+            let end = (i..chars.len()).find(|&j| !is_word_char(chars[j])).unwrap_or(chars.len());
+            out.extend(&chars[i..end]);
+            i = end;
+        } else {
+            out.push(c);
+            i += 1;
+        }
+    }
+    out
+}
+
+/// The A1 text of the R1C1 reference starting at `i`, and the index after it, or `None` when the
+/// word there isn't a reference (a function or a name).
+fn reference_at(chars: &[char], i: usize, at: CellRef) -> Option<(String, usize)> {
+    let mut j = i;
+    let mut row = None;
+    let mut col = None;
+    if matches!(chars.get(j), Some('R' | 'r')) {
+        let (part, next) = parse_part(chars, j + 1)?;
+        row = Some(part);
+        j = next;
+    }
+    if matches!(chars.get(j), Some('C' | 'c')) {
+        let (part, next) = parse_part(chars, j + 1)?;
+        col = Some(part);
+        j = next;
+    }
+    if row.is_none() && col.is_none() {
+        return None;
+    }
+    // A reference ends the word: `ROUND(`, `RATE` or `R2D2` are names.
+    if chars.get(j).is_some_and(|&c| is_word_char(c) || c == '(' || c == '[' || c == '!') {
+        return None;
+    }
+    let row_text = |p: Part| p.resolve(at.row, MAX_ROWS).map(|(r, abs)| format!("{}{}", if abs { "$" } else { "" }, r + 1));
+    let col_text = |p: Part| p.resolve(at.col, MAX_COLS).map(|(c, abs)| format!("{}{}", if abs { "$" } else { "" }, col_to_letters(c)));
+    // One side of a range (`R2:R4`, `C1:C3`) is written alone; a lone row or column is the whole of it.
+    let prev = chars[..i].iter().rev().find(|c| !c.is_whitespace());
+    let in_range = prev == Some(&':') || chars[j..].iter().find(|c| !c.is_whitespace()) == Some(&':');
+    let text = match (row, col) {
+        (Some(r), Some(c)) => row_text(r).zip(col_text(c)).map(|(r, c)| format!("{c}{r}")),
+        (Some(r), None) => row_text(r).map(|r| if in_range { r } else { format!("{r}:{r}") }),
+        (None, Some(c)) => col_text(c).map(|c| if in_range { c } else { format!("{c}:{c}") }),
+        (None, None) => None,
+    };
+    Some((text.unwrap_or_else(|| "#REF!".into()), j))
+}

crates/engine/src/io/tests.rs

@@ -604,3 +604,160 @@ fn opening_google_sheets_export_unwraps_only_formulas_gridcraft_calculates() {
     assert_eq!(text("A2").as_deref(), Some("IFERROR(__XLUDF.DUMMYFUNCTION(\"GOOGLETRANSLATE(\"\"hi\"\",\"\"en\"\",\"\"fr\"\")\"),\"salut\")"));
     assert_eq!(opened.sheets[0].cells.get(CellRef::parse("A2").unwrap()).map(|c| c.value.clone()), Some(Value::text("salut")));
 }
+
+#[test]
+fn a_web_page_saved_as_xls_opens_its_table() {
+    // #3166: a web app's "Export to Excel" is an HTML table saved as .xls; it opened as lines of
+    // markup. Excel opens the table: values read as typed, <th> bold and centred, <x:Name> names
+    // the sheet.
+    let page = "\u{feff}<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\"><head><meta charset=\"UTF-8\">\
+        <!--[if gte mso 9]><xml><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>Orders</x:Name></x:ExcelWorksheet></x:ExcelWorksheets></xml><![endif]-->\
+        </head><body><table><thead><tr><th>Item</th><th>Qty</th><th>Code</th></tr></thead><tbody>\
+        <tr><td>Kiwi &amp;\n Lime</td><td>12</td><td>007</td></tr><tr><td>Plum</td><td x:num=\"4.5\">4,50</td><td>042</td></tr>\
+        </tbody></table></body></html>";
+    let (wb, warnings) = open_bytes("orders.xls", page.as_bytes()).unwrap();
+    assert!(warnings.first().is_some_and(|w| w.contains("is a web page (HTML)")), "{warnings:?}");
+    let sh = wb.sheet(0).unwrap();
+    assert_eq!(sh.name, "Orders");
+    let v = |a: &str| sh.value(CellRef::parse(a).unwrap());
+    assert_eq!(v("A1"), gridcraft_core::Value::text("Item"));
+    assert_eq!(v("A2"), gridcraft_core::Value::text("Kiwi & Lime"));
+    assert_eq!(v("B2"), gridcraft_core::Value::number(12.0));
+    assert_eq!(v("C2"), gridcraft_core::Value::number(7.0), "read like typed input, as Excel does");
+    assert_eq!(v("B3"), gridcraft_core::Value::number(4.5), "the number the page recorded");
+    let style = |a: &str| wb.styles.get(sh.style_id(CellRef::parse(a).unwrap())).clone();
+    assert!(style("A1").font.bold && style("A1").align.h == gridcraft_model::HAlign::Center);
+    assert!(!style("A2").font.bold);
+    // Opened as text, codes keep their zeros; a page named .html gets no warning.
+    let (wb, warnings) = open_bytes_with("orders.html", page.as_bytes(), None, true).unwrap();
+    assert!(warnings.is_empty(), "{warnings:?}");
+    assert_eq!(wb.sheet(0).unwrap().value(CellRef::parse("C2").unwrap()), gridcraft_core::Value::text("007"));
+    // Plain text that merely starts with a tag-like word is still read as CSV.
+    let (wb, _) = open_bytes("notes.csv", b"<b>,1\nx,2\n").unwrap();
+    assert_eq!(wb.sheet(0).unwrap().value(CellRef::parse("B2").unwrap()), gridcraft_core::Value::number(2.0));
+}
+
+#[test]
+fn a_web_page_table_keeps_its_characters_text_and_header_formats() {
+    // A page saved in Windows-1252 keeps its accented letters (it read as replacement characters).
+    let mut page = b"<html><body><table><tr><th>Caf".to_vec();
+    page.push(0xE9);
+    page.extend_from_slice(b"</th><th>2024-01-15</th></tr><tr><td>Plum</td><td x:num=\"4.5\">4,50</td></tr></table></body></html>");
+    let (wb, _) = open_bytes("menu.xls", &page).unwrap();
+    let sh = wb.sheet(0).unwrap();
+    assert_eq!(sh.value(CellRef::parse("A1").unwrap()), gridcraft_core::Value::text("Café"));
+    // A date in a header cell stays a date, bold and centred (its format was replaced).
+    let b1 = wb.styles.get(sh.style_id(CellRef::parse("B1").unwrap()));
+    assert!(matches!(sh.value(CellRef::parse("B1").unwrap()), gridcraft_core::Value::Number(_)));
+    assert!(b1.font.bold && b1.align.h == gridcraft_model::HAlign::Center);
+    assert_ne!(b1.num_fmt.as_str(), "General", "the date keeps its date format");
+    assert_eq!(sh.value(CellRef::parse("B2").unwrap()), gridcraft_core::Value::number(4.5));
+    // Opened as text, a cell keeps the text it shows, not the number the page recorded for it.
+    let (wb, _) = open_bytes_with("menu.xls", &page, None, true).unwrap();
+    assert_eq!(wb.sheet(0).unwrap().value(CellRef::parse("B2").unwrap()), gridcraft_core::Value::text("4,50"));
+}
+
+#[test]
+fn a_web_page_table_opens_after_a_leading_comment_and_keeps_nonbreaking_spaces() {
+    // An exporter's comment before <html> still makes a web page; `&nbsp;` stays a non-breaking
+    // space, as Excel keeps it, while ordinary whitespace collapses.
+    let page = "<!-- exported by a web app -->\n<html><body><table><tr><td>New&nbsp;&nbsp;York</td><td>a \n b</td></tr></table></body></html>";
+    let (wb, warnings) = open_bytes("cities.xls", page.as_bytes()).unwrap();
+    assert!(warnings.first().is_some_and(|w| w.contains("is a web page (HTML)")), "{warnings:?}");
+    let sh = wb.sheet(0).unwrap();
+    assert_eq!(sh.value(CellRef::parse("A1").unwrap()), gridcraft_core::Value::text("New\u{a0}\u{a0}York"));
+    assert_eq!(sh.value(CellRef::parse("B1").unwrap()), gridcraft_core::Value::text("a b"));
+}
+
+/// A small SYLK file written the way spreadsheets export one: a header, number formats, column
+/// widths, cells that carry on from the last row or column, formulas in R1C1 and a shared formula.
+const SYLK: &str = "ID;PTEST;N;E\r\nP;PGeneral\r\nP;P0.00\r\nP;Pyyyy\\-mm\\-dd\r\nF;W1 1 18\r\nF;W2 3 9\r\nB;Y5;X7\r\n\
+C;Y1;X1;K\"Item\"\r\nC;X2;K\"Qty\"\r\nC;X4;K\"Total\"\r\n\
+C;Y2;X1;K\"Bolts;; small\"\r\nC;X2;K12\r\nF;P1;F$2G;X3\r\nC;X3;K0.35\r\nC;X4;K4.2;ERC[-2]*RC[-1]\r\n\
+C;X5;K52;ER2C2+R[1]C[-3]\r\nC;X6;KTRUE\r\nC;X7;K8.4;ERC[-3]*2\r\n\
+C;Y3;X1;K\"Nuts \"\"hex\"\"\"\r\nC;X2;K40\r\nC;X3;K0.12\r\nC;X4;K4.8;ERC[-2]*RC[-1]\r\nC;X5;K\"big\";EIF(R4C4>5,\"big\",\"small\")\r\nC;X7;K9.6;S;R2;C7\r\n\
+C;Y4;X1;K\"Sum\"\r\nC;X4;K9;ESUM(R[-2]C:R[-1]C)\r\nC;X5;K#DIV/0!;E1/0\r\nC;X7;K18;ESUM(C4)\r\n\
+F;P2;FG0G;Y5;X2\r\nC;Y5;X2;K45000\r\nC;X3;K\"R2C3\";E\"R2C3\"\r\nE\r\n";
+
+#[test]
+fn sylk_files_open_with_values_formulas_formats_and_widths() {
+    let (wb, warnings) = open_bytes("Parts list.slk", SYLK.as_bytes()).unwrap();
+    assert!(warnings.is_empty(), "{warnings:?}");
+    let sh = wb.sheet(0).unwrap();
+    assert_eq!(sh.name, "Parts list", "the sheet is named after the file");
+    let at = |a: &str| CellRef::parse(a).unwrap();
+    let formula = |a: &str| sh.cell(at(a)).and_then(|c| c.formula.as_ref()).map(|f| f.text.clone());
+    let text = |s: &str| gridcraft_core::Value::Text(s.into());
+    assert_eq!(sh.value(at("A1")), text("Item"));
+    assert_eq!(sh.value(at("A2")), text("Bolts; small"), ";; is a semicolon");
+    assert_eq!(sh.value(at("A3")), text("Nuts \"\"hex\"\""), "text is kept between the outer quotes as written");
+    assert_eq!(sh.value(at("B2")), gridcraft_core::Value::Number(12.0));
+    assert_eq!(sh.value(at("F2")), gridcraft_core::Value::Bool(true));
+    assert_eq!(sh.value(at("E4")), gridcraft_core::Value::Error(gridcraft_core::CellError::Div0));
+    assert_eq!(sh.value(at("D4")), gridcraft_core::Value::Number(9.0), "a formula keeps the value the file cached");
+    assert_eq!(formula("D2").as_deref(), Some("B2*C2"));
+    assert_eq!(formula("E2").as_deref(), Some("$B$2+B3"));
+    assert_eq!(formula("E3").as_deref(), Some("IF($D$4>5,\"big\",\"small\")"));
+    assert_eq!(formula("D4").as_deref(), Some("SUM(D2:D3)"));
+    assert_eq!(formula("G3").as_deref(), Some("D3*2"), "a shared formula is the other cell's, moved");
+    assert_eq!(formula("G4").as_deref(), Some("SUM($D:$D)"), "C4 alone is the whole column");
+    assert_eq!(formula("C5").as_deref(), Some("\"R2C3\""), "text in quotes isn't a reference");
+    // `F;P1;X3` formats the cell on the current row only.
+    let fmt = |a: &str| wb.styles.get(sh.style_id(at(a))).num_fmt.0.to_string();
+    assert_eq!(fmt("C2"), "0.00");
+    assert_eq!(fmt("C3"), "General");
+    assert_eq!(fmt("B5"), "yyyy\\-mm\\-dd");
+    // Widths are in characters, like the Column Width dialog's.
+    let chars = |c: u32| gridcraft_model::points_to_chars(f64::from(sh.col_width(c)));
+    assert_eq!((chars(0), chars(1), chars(2)), (18.0, 9.0, 9.0));
+    assert_eq!(sh.cols.get(&3).and_then(|i| i.size), None, "column D keeps the default width");
+}
+
+#[test]
+fn sylk_r1c1_formulas_become_a1() {
+    let b2 = CellRef::parse("B2").unwrap();
+    for (r1c1, a1) in [
+        ("RC", "B2"),
+        ("R[1]C[-1]", "A3"),
+        ("R1C1:R2C2", "$A$1:$B$2"),
+        ("R3", "$3:$3"),
+        ("R1:R[2]", "$1:4"),
+        ("C[1]", "C:C"),
+        ("SUM(C3:C4)", "SUM($C:$D)"),
+        ("ROUND(RC[1],2)+RATE(1,2,3)", "ROUND(C2,2)+RATE(1,2,3)"),
+        ("'R1C1 sheet'!R1C1", "'R1C1 sheet'!$A$1"),
+        ("Sheet2!RC", "Sheet2!B2"),
+        ("R2D2+rc", "R2D2+B2"),
+        ("R[-5]C", "#REF!"),
+        ("\"RC\"&R1C1", "\"RC\"&$A$1"),
+    ] {
+        assert_eq!(sylk::r1c1_formula_to_a1(r1c1, b2), a1, "{r1c1}");
+    }
+}
+
+#[test]
+fn sylk_rejects_other_files_and_survives_damage() {
+    assert!(open_bytes("not.slk", b"A,B\n1,2\n").is_err(), "a SYLK file starts with ID");
+    // Positions off the sheet, broken numbers, a missing end and a format past the list.
+    let (wb, warnings) =
+        open_bytes("damaged.slk", b"ID;P\nC;Y0;X1;K1\nC;Y2;X99999;K2\nC;Y3;X1;K1e999\nF;P7;Y3;X1\nF;W5 2 9\nC;Y4;X1;K5;E(((\n").unwrap();
+    let sh = wb.sheet(0).unwrap();
+    assert_eq!(sh.cells.iter().count(), 2, "{:?}", sh.cells.iter().collect::<Vec<_>>());
+    assert_eq!(sh.value(CellRef::parse("A3").unwrap()), gridcraft_core::Value::Text("1e999".into()));
+    assert_eq!(warnings.len(), 1, "skipped records are reported: {warnings:?}");
+}
+
+#[test]
+fn sylk_survives_huge_relative_offsets_and_width_floods() {
+    // Relative offsets at the edge of i64 fall off the sheet instead of overflowing.
+    let text = b"ID;P\nC;Y1;X1;K0;ER[9223372036854775807]C\nC;Y2;X1;K0;ER[-9223372036854775808]C[-9223372036854775808]\nE\n";
+    assert!(open_bytes("offsets.slk", text).is_ok());
+    // Width records over every column, many times over: the import keeps a bounded number.
+    let mut flood = b"ID;P\n".to_vec();
+    for _ in 0..5000 {
+        flood.extend_from_slice(b"F;W1 16384 12\n");
+    }
+    flood.extend_from_slice(b"C;Y1;X1;K1\nE\n");
+    let (wb, _) = open_bytes("widths.slk", &flood).unwrap();
+    assert_eq!(wb.sheet(0).unwrap().value(CellRef::parse("A1").unwrap()), gridcraft_core::Value::Number(1.0));
+}

crates/engine/src/pivot/compute.rs

@@ -77,6 +77,8 @@ struct AggregateInput<'a> {
     extra: &'a [usize],
     filters: &'a [(usize, &'a PivotFilter, PivotDateGroup, bool)],
     filter_fmts: &'a [String],
+    /// Each filter's selected labels, ASCII-lowercased, so a record's test is one probe.
+    filter_sets: &'a [Option<HashSet<String>>],
     row_fmts: &'a [String],
     col_fmts: &'a [String],
     empty: bool,
@@ -99,10 +101,10 @@ fn aggregate_record(
     ri: usize,
     rec: &[Value],
 ) -> Result<(), String> {
-    for ((c, field, group, _), fmt) in input.filters.iter().zip(input.filter_fmts) {
-        if let Some(selected) = &field.selected {
+    for (((c, _, group, _), fmt), selected) in input.filters.iter().zip(input.filter_fmts).zip(input.filter_sets) {
+        if let Some(selected) = selected {
             let label = item_label(input.wb, rec.get(*c).unwrap_or(&Value::Empty), *group, fmt);
-            if !selected.iter().any(|value| value.eq_ignore_ascii_case(&label)) {
+            if !selected.contains(&label.to_ascii_lowercase()) {
                 return Ok(());
             }
         }
@@ -355,15 +357,19 @@ fn ranked_value(raw: Value, lookup: &ValueLookup<'_>, context: &ShowContext<'_>)
     let Some((_, parent)) = context.row_path.split_last() else { return Value::Empty };
     let Some(me) = raw.as_f64() else { return raw };
     let siblings = context.siblings.get(parent).cloned().unwrap_or_default();
-    let mut rank = 1u64;
-    for sibling in siblings {
-        let mut path = parent.to_vec();
-        path.push(sibling);
-        if number(&lookup.get(&path, context.col_path, context.value_index)).is_some_and(|value| value > me) {
-            rank += 1;
-        }
-    }
-    Value::number(rank as f64)
+    // Excel's ranks are dense: ties share a rank and the next value takes the next one
+    // (5, 4, 3, 3, 4 rank 1, 2, 3, 3, 2), so count the distinct larger values.
+    let mut larger: Vec<f64> = siblings
+        .into_iter()
+        .filter_map(|sibling| {
+            let mut path = parent.to_vec();
+            path.push(sibling);
+            number(&lookup.get(&path, context.col_path, context.value_index)).filter(|value| *value > me)
+        })
+        .collect();
+    larger.sort_by(f64::total_cmp);
+    larger.dedup();
+    Value::number(larger.len() as f64 + 1.0)
 }
 
 fn show_value(definition: &PivotValue, raw: Value, lookup: &ValueLookup<'_>, context: &ShowContext<'_>) -> Value {
@@ -471,6 +477,8 @@ pub(super) fn compute_from(wb: &Workbook, pt: &PivotTable, src: &Source, mut pro
 
     // ---- aggregate
     let filter_fmts: Vec<String> = filters.iter().map(|f| fmt_of(f.0)).collect();
+    let filter_sets: Vec<Option<HashSet<String>>> =
+        filters.iter().map(|(_, field, _, _)| field.selected.as_ref().map(|s| s.iter().map(|v| v.to_ascii_lowercase()).collect())).collect();
     let row_fmts: Vec<String> = rows.iter().map(|(c, _)| fmt_of(*c)).collect();
     let col_fmts: Vec<String> = cols.iter().map(|(c, _)| fmt_of(*c)).collect();
     let aggregate = aggregate_source(
@@ -484,6 +492,7 @@ pub(super) fn compute_from(wb: &Workbook, pt: &PivotTable, src: &Source, mut pro
             extra: &extra,
             filters: &filters,
             filter_fmts: &filter_fmts,
+            filter_sets: &filter_sets,
             row_fmts: &row_fmts,
             col_fmts: &col_fmts,
             empty,

crates/engine/src/pivot/items.rs

@@ -197,7 +197,8 @@ impl Acc {
     }
 }
 
-/// Excel's caption verb for a function ("Sum of Sales").
+/// Excel's caption verb for a function ("Sum of Sales"). Count Numbers is captioned "Count of
+/// Sales", as Excel names it and as the XLSX reader names a value field saved without a name.
 pub fn func_caption(f: PivotFunc) -> &'static str {
     match f {
         PivotFunc::Sum => "Sum",
@@ -206,7 +207,7 @@ pub fn func_caption(f: PivotFunc) -> &'static str {
         PivotFunc::Max => "Max",
         PivotFunc::Min => "Min",
         PivotFunc::Product => "Product",
-        PivotFunc::CountNumbers => "Count Numbers",
+        PivotFunc::CountNumbers => "Count",
         PivotFunc::StdDev => "StdDev",
         PivotFunc::StdDevP => "StdDevp",
         PivotFunc::Var => "Var",

crates/engine/src/selection.rs

@@ -128,6 +128,32 @@ impl Selection {
     }
 }
 
+impl Selection {
+    /// Ctrl+. (Next Corner of Selection): the active cell moves clockwise to the next corner of
+    /// the current area (top-left, top-right, bottom-right, bottom-left) and becomes the anchor,
+    /// so Shift+arrows then move the opposite corner. The area stays selected. From a cell that
+    /// isn't a corner the next corner is the top-left one; a single cell stays where it is.
+    pub fn next_corner(&mut self) {
+        self.next_corner_by(Some);
+    }
+
+    /// [`Selection::next_corner`] where `stop` says where each corner takes the active cell: the
+    /// top-left cell of a merged cell the corner is in, or `None` for a corner that can't be
+    /// selected (it is skipped). Corners that end up on the active cell are one stop with it.
+    pub fn next_corner_by(&mut self, stop: impl Fn(CellRef) -> Option<CellRef>) {
+        let r = self.current();
+        let corners = [r.start, CellRef::new(r.start.row, r.end.col), r.end, CellRef::new(r.end.row, r.start.col)];
+        let next = match corners.iter().rposition(|c| stop(*c) == Some(self.active)) {
+            Some(i) => (1..=4).filter_map(|k| corners.get((i + k) % 4)).filter_map(|c| stop(*c)).find(|c| *c != self.active),
+            None => corners.iter().find_map(|c| stop(*c)),
+        };
+        if let Some(next) = next {
+            self.active = next;
+            self.anchor = next;
+        }
+    }
+}
+
 /// Ctrl+arrow: jump to the edge of the current data region (Excel's End mode).
 pub fn jump(sheet: &Sheet, from: CellRef, dr: i64, dc: i64) -> CellRef {
     if dr == 0 && dc == 0 {

crates/engine/src/tests.rs

@@ -2743,6 +2743,78 @@ fn validation_formulas_are_relative_and_see_the_new_value() {
     assert!(!ok(&mut s, "C1", "50"));
 }
 
+#[test]
+fn multi_area_rule_formulas_are_relative_to_the_top_left_cell_of_all_areas() {
+    // Issue #3152: Excel writes the formula for the top-left cell of all the areas (H26), whatever
+    // order they are listed in, not for the first area listed (H62).
+    let mut s = s();
+    s.execute("range.setValues", json!({"range": "F26:F27", "values": [[4], [5]]})).unwrap();
+    s.execute("data.validation", json!({"range": "H62:H68,H26:H27,H93:H95", "type": "custom", "formula1": "=MOD($H26,$F26)=0"})).unwrap();
+    let ok = |s: &mut Session, cell: &str, input: &str| s.execute("data.validate", json!({"cell": cell, "input": input})).unwrap()["ok"] == true;
+    assert!(ok(&mut s, "H26", "4"));
+    assert!(ok(&mut s, "H26", "8"));
+    assert!(!ok(&mut s, "H26", "3"));
+    assert!(ok(&mut s, "H27", "10"));
+    assert!(!ok(&mut s, "H27", "4"));
+
+    // Conditional formats anchor on the same cell: `=D2>0` on D5:D6,D2:D3 checks D2 at D2.
+    s.execute("range.setValues", json!({"range": "D2:D6", "values": [[1], [0], [0], [1], [0]]})).unwrap();
+    s.execute("home.conditionalFormat", json!({"range": "D5:D6,D2:D3", "rule": {"type": "expression", "formula": "=D2>0", "preset": "greenFill"}}))
+        .unwrap();
+    let wb = s.doc().unwrap().wb.clone();
+    let mut cache = crate::cf::CfCache::new();
+    let mut styled = |c: &str| cache.look(&wb, 0, CellRef::parse(c).unwrap()).and_then(|l| l.style).is_some();
+    assert_eq!([styled("D2"), styled("D3"), styled("D5"), styled("D6")], [true, false, true, false]);
+}
+
+#[test]
+fn removing_a_rules_top_left_cell_rewrites_its_formulas_for_the_new_one() {
+    let mut s = s();
+    let ok = |s: &mut Session, cell: &str, input: &str| s.execute("data.validate", json!({"cell": cell, "input": input})).unwrap()["ok"] == true;
+    let f1 = |s: &Session| s.doc().unwrap().wb.active().unwrap().validations[0].f1.clone();
+
+    // One area: clearing A1 off A1:A9 leaves A2:A9, whose cells still check themselves.
+    s.execute("data.validation", json!({"range": "A1:A9", "type": "custom", "formula1": "=A1>10"})).unwrap();
+    s.execute("data.validation", json!({"range": "A1", "clear": true})).unwrap();
+    assert_eq!(f1(&s), "A2>10");
+    assert!(ok(&mut s, "A2", "20"));
+    assert!(!ok(&mut s, "A2", "5"));
+    s.execute("data.validation", json!({"range": "A1:A9", "clear": true})).unwrap();
+
+    // Several areas: clearing H26 moves the top-left cell to H27, where `$H27,$F27` is checked.
+    s.execute("range.setValues", json!({"range": "F26:F27", "values": [[4], [5]]})).unwrap();
+    s.execute("data.validation", json!({"range": "H62:H68,H26:H27", "type": "custom", "formula1": "=MOD($H26,$F26)=0"})).unwrap();
+    s.execute("data.validation", json!({"range": "H26", "clear": true})).unwrap();
+    assert_eq!(f1(&s), "MOD($H27,$F27)=0");
+    assert!(ok(&mut s, "H27", "10"));
+    assert!(!ok(&mut s, "H27", "4"));
+    // Absolute and literal formulas don't move.
+    s.execute("data.validation", json!({"range": "J1:J3", "type": "list", "formula1": "=$B$1:$B$2"})).unwrap();
+    s.execute("data.validation", json!({"range": "J1", "clear": true})).unwrap();
+    let dv = s.doc().unwrap().wb.active().unwrap().validations.iter().find(|d| d.ranges[0].a1() == "J2:J3").unwrap().f1.clone();
+    assert_eq!(dv, "$B$1:$B$2");
+
+    // Conditional formats: Clear Rules on D2 drops the D2:D3 area, and D5:D6 keeps reading itself.
+    s.execute("range.setValues", json!({"range": "D2:D6", "values": [[1], [0], [0], [0], [1]]})).unwrap();
+    s.execute("home.conditionalFormat", json!({"range": "D5:D6,D2:D3", "rule": {"type": "expression", "formula": "=D2>0", "preset": "greenFill"}}))
+        .unwrap();
+    s.execute("range.setValues", json!({"range": "E2:E6", "values": [[1], [0], [0], [0], [1]]})).unwrap();
+    s.execute("range.setValues", json!({"range": "G2:G6", "values": [[0], [9], [9], [9], [0]]})).unwrap();
+    s.execute(
+        "home.conditionalFormat",
+        json!({"range": "E5:E6,E2:E3", "rule": {"type": "cellIs", "operator": "greater", "value": "=G2", "preset": "lightRedFill"}}),
+    )
+    .unwrap();
+    s.execute("home.clearRules", json!({"range": "D2,E2"})).unwrap();
+    let rules: Vec<gridcraft_model::CfRule> = s.doc().unwrap().wb.active().unwrap().cond_formats.iter().map(|c| c.rule.clone()).collect();
+    assert!(rules.iter().any(|r| matches!(r, gridcraft_model::CfRule::Expression { formula, .. } if formula == "D5>0")), "{rules:?}");
+    assert!(rules.iter().any(|r| matches!(r, gridcraft_model::CfRule::CellIs { a, .. } if a == "G5")), "{rules:?}");
+    let wb = s.doc().unwrap().wb.clone();
+    let mut cache = crate::cf::CfCache::new();
+    let mut styled = |c: &str| cache.look(&wb, 0, CellRef::parse(c).unwrap()).and_then(|l| l.style).is_some();
+    assert_eq!([styled("D5"), styled("D6"), styled("E5"), styled("E6")], [false, true, false, true]);
+}
+
 #[test]
 fn samples_build() {
     for (name, _) in crate::sample::SAMPLES {
@@ -5225,6 +5297,42 @@ fn move_columns_checks_the_protection_of_the_named_sheet() {
     assert_eq!(v(&s, "A1"), Value::text("A"));
 }
 
+#[test]
+fn move_columns_checks_the_protection_of_a_sheet_named_by_its_range() {
+    // A `Sheet!` range or cell picks the sheet the move modifies; the protection checks must
+    // authorize that sheet too, not the active one.
+    let mut s = s();
+    s.execute("home.insertSheet", json!({"name": "P"})).unwrap();
+    s.execute("range.setValues", json!({"range": "A1", "values": [[1, 2, 3, 4]]})).unwrap();
+    s.execute("review.protectSheet", json!({})).unwrap();
+    s.execute("sheet.activate", json!({"sheet": 0})).unwrap();
+    for key in ["range", "cell"] {
+        let err = s.execute("sheet.moveColumns", json!({key: "P!A1", "cols": "B:C", "before": 4})).expect_err("moving columns on a protected sheet");
+        assert!(err.to_string().contains("protected"), "{err}");
+    }
+    let d = s.doc().unwrap();
+    let sh = &d.wb.sheets[d.wb.sheet_index("P").unwrap()];
+    let pv: Vec<Value> = (0..4).map(|c| sh.value(CellRef::new(0, c))).collect();
+    assert_eq!(pv, vec![Value::number(1.0), Value::number(2.0), Value::number(3.0), Value::number(4.0)]);
+}
+
+#[test]
+fn sorting_cannot_unlock_a_locked_cell_by_moving_equal_content_onto_it() {
+    // An unlocked 2 sorted onto a locked 2 leaves the content as it was, but would make the cell
+    // editable; the sort is refused instead.
+    let mut s = s();
+    s.execute("range.setValues", json!({"range": "A1", "values": [[2], [2], [1]]})).unwrap();
+    s.execute("home.lockCell", json!({"range": "A1", "on": false})).unwrap();
+    s.execute("home.lockCell", json!({"range": "A3", "on": false})).unwrap();
+    s.execute("review.protectSheet", json!({"sort": true})).unwrap();
+    let before = s.doc().unwrap().wb.clone();
+    let err =
+        s.execute("data.sort", json!({"range": "A1:A3", "header": false, "keys": [{"column": "A", "order": "asc"}]})).expect_err("sort unlocking A2");
+    assert!(err.to_string().contains("protected sheet"), "{err}");
+    assert_eq!(*s.doc().unwrap().wb, *before);
+    assert!(s.execute("cell.set", json!({"cell": "A2", "input": "9"})).is_err(), "A2 stays locked");
+}
+
 #[test]
 fn a_script_cannot_switch_windows() {
     // Stored scripts are scoped to their workbook: a step that activates another window would
@@ -5349,3 +5457,118 @@ fn a_view_kept_through_redo_doesnt_make_the_saved_workbook_dirty() {
     assert_eq!(d.wb.active().unwrap().view, gridcraft_model::SheetViewMode::PageBreakPreview);
     assert!(!d.is_dirty(), "back at the saved edits, the view alone isn't a change");
 }
+
+#[test]
+fn workbook_display_options_are_commands() {
+    // #3101: Show sheet tabs / horizontal / vertical scroll bar, toggling without `on`, saved with
+    // the workbook and undoable.
+    let mut s = Session::new();
+    s.new_workbook();
+    let view = |s: &Session| s.doc().unwrap().wb.view;
+    assert_eq!(s.execute("view.showSheetTabs", json!({})).unwrap()["on"], json!(false));
+    assert_eq!(s.execute("view.showHorizontalScrollBar", json!({"on": false})).unwrap()["on"], json!(false));
+    assert_eq!(s.execute("view.showVerticalScrollBar", json!({"on": false})).unwrap()["on"], json!(false));
+    let v = view(&s);
+    assert!(!v.show_sheet_tabs && !v.show_horizontal_scroll && !v.show_vertical_scroll);
+    let (back, _) = gridcraft_xlsx::read_xlsx(&gridcraft_xlsx::write_xlsx(&s.doc().unwrap().wb).unwrap()).unwrap();
+    assert_eq!(back.view, v, "saved with the workbook");
+    s.execute("edit.undo", json!({})).unwrap();
+    assert!(view(&s).show_vertical_scroll);
+    assert_eq!(s.execute("view.showSheetTabs", json!({})).unwrap()["on"], json!(true), "toggles back");
+}
+
+/// A link from a file can sit on a cell with nothing stored in it, past the used range (or on a
+/// sheet with no cells at all). Clear Hyperlinks, and Remove Hyperlink in the cell menu, must
+/// still remove it.
+#[test]
+fn clear_hyperlinks_removes_links_on_cells_with_nothing_stored() {
+    let mut s = s();
+    s.execute("cell.set", json!({"cell": "A1", "input": "x"})).unwrap();
+    let link = || gridcraft_model::Hyperlink { target: "https://example.com".into(), tooltip: None, external: true };
+    let (a1, c5) = (CellRef::parse("A1").unwrap(), CellRef::parse("C5").unwrap());
+    std::sync::Arc::make_mut(&mut s.doc_mut().unwrap().wb).sheet_mut(0).unwrap().hyperlinks.insert(c5, link());
+    s.execute("edit.clearHyperlinks", json!({"range": "C5"})).unwrap();
+    assert!(!s.doc().unwrap().wb.active().unwrap().hyperlinks.contains_key(&c5), "the link past the used range is removed");
+
+    // No cells at all.
+    s.execute("edit.clearAll", json!({"range": "A1"})).unwrap();
+    std::sync::Arc::make_mut(&mut s.doc_mut().unwrap().wb).sheet_mut(0).unwrap().hyperlinks.insert(a1, link());
+    s.execute("edit.clearHyperlinks", json!({"range": "A1"})).unwrap();
+    assert!(!s.doc().unwrap().wb.active().unwrap().hyperlinks.contains_key(&a1), "the link on an empty sheet is removed");
+}
+
+/// Notes and links aren't cell contents, so the cell comparison that guards a protected sheet
+/// doesn't see them go: Clear Hyperlinks and Clear Comments refuse locked cells themselves,
+/// stored or not.
+#[test]
+fn clearing_links_and_notes_respects_sheet_protection() {
+    let mut s = s();
+    s.execute("cell.set", json!({"cell": "A1", "input": "x"})).unwrap();
+    let link = || gridcraft_model::Hyperlink { target: "https://example.com".into(), tooltip: None, external: true };
+    let (a1, c5) = (CellRef::parse("A1").unwrap(), CellRef::parse("C5").unwrap());
+    {
+        let sh = std::sync::Arc::make_mut(&mut s.doc_mut().unwrap().wb).sheet_mut(0).unwrap();
+        sh.hyperlinks.insert(a1, link());
+        sh.hyperlinks.insert(c5, link());
+    }
+    s.execute("review.newNote", json!({"cell": "C5", "text": "note", "author": "Example"})).unwrap();
+    s.execute("review.protectSheet", json!({})).unwrap();
+    for (cmd, range) in [("edit.clearHyperlinks", "A1"), ("edit.clearHyperlinks", "C5"), ("edit.clearComments", "C5")] {
+        assert!(s.execute(cmd, json!({"range": range})).is_err(), "{cmd} on locked {range}");
+    }
+    let sh = s.doc().unwrap().wb.active().unwrap().clone();
+    assert!(sh.hyperlinks.contains_key(&a1) && sh.hyperlinks.contains_key(&c5) && sh.comments.contains_key(&c5), "nothing removed");
+
+    s.execute("review.unprotectSheet", json!({})).unwrap();
+    s.execute("edit.clearHyperlinks", json!({"range": "A1:C5"})).unwrap();
+    s.execute("edit.clearComments", json!({"range": "C5"})).unwrap();
+    let sh = s.doc().unwrap().wb.active().unwrap().clone();
+    assert!(sh.hyperlinks.is_empty() && sh.comments.is_empty());
+}
+
+/// A removed link or note is a change to its cell even when nothing is stored there, so a
+/// recorded macro's footprint lists it.
+#[test]
+fn clearing_links_and_notes_records_their_cells() {
+    let mut s = s();
+    let c5 = CellRef::parse("C5").unwrap();
+    std::sync::Arc::make_mut(&mut s.doc_mut().unwrap().wb)
+        .sheet_mut(0)
+        .unwrap()
+        .hyperlinks
+        .insert(c5, gridcraft_model::Hyperlink { target: "https://example.com".into(), tooltip: None, external: true });
+    s.execute("review.newNote", json!({"cell": "D7", "text": "note", "author": "Example"})).unwrap();
+    s.doc_mut().unwrap().touched = Some(Vec::new());
+    s.execute("edit.clearHyperlinks", json!({"range": "C5"})).unwrap();
+    s.execute("edit.clearComments", json!({"range": "D7"})).unwrap();
+    let touched: Vec<String> = s.doc().unwrap().touched.clone().unwrap_or_default().into_iter().map(|(_, c)| c.a1()).collect();
+    assert!(touched.contains(&"C5".to_string()) && touched.contains(&"D7".to_string()), "{touched:?}");
+}
+
+/// The locked-cell check for notes and links keeps Allow Edit Ranges: a range without a password
+/// allows them at once, one with a password once it's unlocked in this session.
+#[test]
+fn clearing_links_and_notes_keeps_allow_edit_ranges() {
+    let mut s = s();
+    s.execute("cell.set", json!({"cell": "A1", "input": "x"})).unwrap();
+    let link = || gridcraft_model::Hyperlink { target: "https://example.com".into(), tooltip: None, external: true };
+    let (a1, c5) = (CellRef::parse("A1").unwrap(), CellRef::parse("C5").unwrap());
+    {
+        let sh = std::sync::Arc::make_mut(&mut s.doc_mut().unwrap().wb).sheet_mut(0).unwrap();
+        sh.hyperlinks.insert(a1, link());
+        sh.hyperlinks.insert(c5, link());
+    }
+    s.execute("review.newNote", json!({"cell": "C5", "text": "note", "author": "Example"})).unwrap();
+    // Ranges are added before protecting: a protected sheet refuses `add`.
+    s.execute("review.allowEditRanges", json!({"action": "add", "title": "Open", "range": "A1"})).unwrap();
+    s.execute("review.allowEditRanges", json!({"action": "add", "title": "Kept", "range": "C5", "password": "example"})).unwrap();
+    s.execute("review.protectSheet", json!({})).unwrap();
+
+    s.execute("edit.clearHyperlinks", json!({"range": "A1"})).unwrap();
+    assert!(s.execute("edit.clearComments", json!({"range": "C5"})).is_err(), "a password range stays locked until unlocked");
+    s.execute("review.allowEditRanges", json!({"action": "unlock", "title": "Kept", "password": "example"})).unwrap();
+    s.execute("edit.clearHyperlinks", json!({"range": "C5"})).unwrap();
+    s.execute("edit.clearComments", json!({"range": "C5"})).unwrap();
+    let sh = s.doc().unwrap().wb.active().unwrap().clone();
+    assert!(sh.hyperlinks.is_empty() && sh.comments.is_empty());
+}

crates/functions/src/dynamic.rs

@@ -760,6 +760,13 @@ fn groupby(args: &[Arg], c: &mut dyn Ctx) -> R<Value> {
     let total = opt_count(args, 4)?.unwrap_or(1);
     let sort = opt_count(args, 5)?.unwrap_or(1);
     let filter = opt_arr(args, 6)?;
+    let relationship = opt_count(args, 7)?.unwrap_or(0);
+    // A total depth of N adds subtotals for the first N - 1 key columns, so it can't exceed the
+    // key columns, and a flat table (field_relationship 1) has no levels to subtotal.
+    let depth = total.unsigned_abs() as usize;
+    if depth > rf.cols.max(1) || (depth > 1 && relationship == 1) {
+        return Err(CellError::Value);
+    }
     let p = prepare(&[&rf], &vals, fh, filter.as_ref())?;
     let keys: Vec<Vec<Value>> = p.rows.iter().map(|&r| key_row(&rf, r)).collect();
     let mut groups: HashMap<String, Vec<usize>> = HashMap::new();
@@ -791,13 +798,22 @@ fn groupby(args: &[Arg], c: &mut dyn Ctx) -> R<Value> {
         lines
             .sort_by(|a, b| cmp_keys(&[a.get(ci).cloned().unwrap_or(Value::Empty)], &[b.get(ci).cloned().unwrap_or(Value::Empty)], &[sort.signum()]));
     }
+    if depth > 1 {
+        let mut rows_of = |keys: &[Value]| groups.get(&row_key(keys)).cloned().unwrap_or_default();
+        // The header and total lines count too, so the whole result is checked before it is built.
+        let around = usize::from(p.show_headers) + usize::from(total != 0);
+        let width = rf.cols.saturating_add(vals.cols);
+        let fits = |n: usize| check_output_size(n.saturating_add(around), width);
+        lines = with_subtotals(lines, depth, rf.cols, total < 0, &fits, &mut rows_of, &mut agg_row)?;
+    }
     let mut out = Vec::new();
     if p.show_headers {
         let mut h = p.field_headers.clone();
         h.extend(p.value_headers.iter().cloned());
         out.push(h);
     }
-    let mut total_line = vec![Value::from("Total")];
+    // With subtotals Excel calls the last line "Grand Total".
+    let mut total_line = vec![Value::from(if depth > 1 { "Grand Total" } else { "Total" })];
     total_line.resize(rf.cols, Value::Empty);
     total_line.extend(agg_row(&p.rows));
     if total < 0 {
@@ -812,6 +828,84 @@ fn groupby(args: &[Arg], c: &mut dyn Ctx) -> R<Value> {
     from_rows(out, &Value::Empty)
 }
 
+/// GROUPBY's subtotals: `lines` (`key_cols` keys, then values) with the lines of each group of a
+/// key level kept together in the order the groups first appear, and for every key level above
+/// `depth` a line after the group (before it when `before`): the group's keys, blanks for the deeper
+/// keys, and the values aggregated over the group's source rows (`rows_of` maps a line's keys to them).
+///
+/// No recursion, so a deep total depth can't exhaust the stack: each line gets the id of its key
+/// prefix at every level (ids count up as prefixes first appear), a stable sort by those ids brings
+/// each group together, and one walk adds a subtotal where a group starts or ends. `fits` gets the
+/// line count as the groups are found, so an oversized result is refused before it is built.
+fn with_subtotals(
+    mut lines: Vec<Vec<Value>>,
+    depth: usize,
+    key_cols: usize,
+    before: bool,
+    fits: &dyn Fn(usize) -> R<()>,
+    rows_of: &mut dyn FnMut(&[Value]) -> Vec<usize>,
+    agg: &mut dyn FnMut(&[usize]) -> Vec<Value>,
+) -> R<Vec<Vec<Value>>> {
+    let levels = depth.saturating_sub(1);
+    if levels == 0 {
+        return Ok(lines);
+    }
+    let mut ids: HashMap<(usize, String), usize> = HashMap::new();
+    let mut paths: Vec<Vec<usize>> = Vec::with_capacity(lines.len());
+    for line in &lines {
+        let mut parent = usize::MAX;
+        let mut path = Vec::with_capacity(levels);
+        for level in 0..levels {
+            let next = ids.len();
+            parent = *ids.entry((parent, row_key(line.get(level..=level).unwrap_or_default()))).or_insert(next);
+            path.push(parent);
+        }
+        fits(lines.len().saturating_add(ids.len()))?;
+        paths.push(path);
+    }
+    let mut group_rows: Vec<Vec<usize>> = vec![Vec::new(); ids.len()];
+    for (line, path) in lines.iter().zip(&paths) {
+        let rows = rows_of(line.get(..key_cols).unwrap_or_default());
+        for &id in path {
+            if let Some(g) = group_rows.get_mut(id) {
+                g.extend_from_slice(&rows);
+            }
+        }
+    }
+    let mut subtotal = |keys: &[Value], level: usize, id: usize| -> Vec<Value> {
+        let mut line: Vec<Value> = keys.iter().take(level + 1).cloned().collect();
+        line.resize(key_cols, Value::Empty);
+        line.extend(agg(group_rows.get(id).map(Vec::as_slice).unwrap_or_default()));
+        line
+    };
+    let mut order: Vec<usize> = (0..lines.len()).collect();
+    order.sort_by(|&a, &b| paths.get(a).cmp(&paths.get(b)));
+    let mut out = Vec::with_capacity(lines.len().saturating_add(ids.len()));
+    let mut prev: Option<(Vec<Value>, &[usize])> = None;
+    for &i in &order {
+        let (Some(line), Some(path)) = (lines.get_mut(i).map(std::mem::take), paths.get(i)) else { continue };
+        // The first level at which this line leaves the previous line's groups.
+        let split = prev.as_ref().map_or(0, |(_, p)| p.iter().zip(path).take_while(|(a, b)| a == b).count());
+        if before {
+            for (level, &id) in path.iter().enumerate().skip(split) {
+                out.push(subtotal(&line, level, id));
+            }
+        } else if let Some((keys, p)) = &prev {
+            for (level, &id) in p.iter().enumerate().skip(split).rev() {
+                out.push(subtotal(keys, level, id));
+            }
+        }
+        prev = Some((line.get(..key_cols).unwrap_or_default().to_vec(), path));
+        out.push(line);
+    }
+    if !before && let Some((keys, p)) = &prev {
+        for (level, &id) in p.iter().enumerate().rev() {
+            out.push(subtotal(keys, level, id));
+        }
+    }
+    Ok(out)
+}
+
 /// Height and width of a PIVOTBY grid: `header_rows` (one per column field, plus the value-name row) and
 /// `body_rows` (row keys plus the total row), each `lead` row-field cells wide plus `value_cols` cells per column key.
 fn pivot_dims(header_rows: usize, body_rows: usize, col_keys: usize, value_cols: usize, lead: usize) -> (usize, usize) {
@@ -1265,6 +1359,78 @@ mod tests {
         is_err(ev("GROUPBY", vec![rf(region), av(col(&[1.0])), t("SUM")]), CellError::Value);
     }
 
+    #[test]
+    fn groupby_subtotals_past_the_size_limit_are_refused_before_they_are_built() {
+        // One row with 4000 key columns at depth 4000 asks for 3999 subtotal lines, each 4001 cells
+        // wide: 16 million cells, over the limit. It is #NUM! before any subtotal line exists (it
+        // used to build them all, nesting 4000 levels deep, and refuse them afterwards).
+        let keys = av(arr(vec![(0..4000).map(|i| nv(f64::from(i))).collect()]));
+        is_err(ev("GROUPBY", vec![keys, av(col(&[1.0])), t("SUM"), empty(), n(4000.0)]), CellError::Num);
+    }
+
+    #[test]
+    fn groupby_total_depth_adds_subtotals() {
+        // #1456 item 1, values as Excel 365 shows them.
+        let keys2 = || av(arr(vec![vec![tv("a"), tv("x")], vec![tv("a"), tv("y")], vec![tv("b"), tv("x")]]));
+        let vals3 = || av(col(&[1.0, 2.0, 3.0]));
+        let e = Value::Empty;
+        let r = ev("GROUPBY", vec![keys2(), vals3(), t("SUM"), empty(), n(2.0)]);
+        assert_eq!(
+            rows_of(&r),
+            vec![
+                vec![tv("a"), tv("x"), nv(1.0)],
+                vec![tv("a"), tv("y"), nv(2.0)],
+                vec![tv("a"), e.clone(), nv(3.0)],
+                vec![tv("b"), tv("x"), nv(3.0)],
+                vec![tv("b"), e.clone(), nv(3.0)],
+                vec![tv("Grand Total"), e.clone(), nv(6.0)],
+            ]
+        );
+        let r = ev("GROUPBY", vec![keys2(), vals3(), t("SUM"), empty(), n(-2.0)]);
+        assert_eq!(
+            rows_of(&r),
+            vec![
+                vec![tv("Grand Total"), e.clone(), nv(6.0)],
+                vec![tv("a"), e.clone(), nv(3.0)],
+                vec![tv("a"), tv("x"), nv(1.0)],
+                vec![tv("a"), tv("y"), nv(2.0)],
+                vec![tv("b"), e.clone(), nv(3.0)],
+                vec![tv("b"), tv("x"), nv(3.0)],
+            ]
+        );
+        let keys3 = || {
+            av(arr(vec![
+                vec![tv("a"), tv("x"), tv("p")],
+                vec![tv("a"), tv("x"), tv("q")],
+                vec![tv("a"), tv("y"), tv("p")],
+                vec![tv("b"), tv("x"), tv("p")],
+            ]))
+        };
+        let vals4 = || av(col(&[1.0, 2.0, 3.0, 4.0]));
+        let r = ev("GROUPBY", vec![keys3(), vals4(), t("SUM"), empty(), n(3.0)]);
+        let line = |k: [&str; 3], v: f64| k.iter().map(|s| if s.is_empty() { Value::Empty } else { tv(s) }).chain([nv(v)]).collect::<Vec<_>>();
+        assert_eq!(
+            rows_of(&r),
+            vec![
+                line(["a", "x", "p"], 1.0),
+                line(["a", "x", "q"], 2.0),
+                line(["a", "x", ""], 3.0),
+                line(["a", "y", "p"], 3.0),
+                line(["a", "y", ""], 3.0),
+                line(["a", "", ""], 6.0),
+                line(["b", "x", "p"], 4.0),
+                line(["b", "x", ""], 4.0),
+                line(["b", "", ""], 4.0),
+                line(["Grand Total", "", ""], 10.0),
+            ]
+        );
+        // Depth 1 keeps "Total"; a depth past the key columns, or subtotals of a flat table, are errors.
+        let r = ev("GROUPBY", vec![keys2(), vals3(), t("SUM"), empty(), n(1.0)]);
+        assert_eq!(rows_of(&r).last().unwrap(), &vec![tv("Total"), e, nv(6.0)]);
+        is_err(ev("GROUPBY", vec![av(arr(vec![vec![tv("a")], vec![tv("b")]])), av(col(&[1.0, 2.0])), t("SUM"), empty(), n(2.0)]), CellError::Value);
+        is_err(ev("GROUPBY", vec![keys2(), vals3(), t("SUM"), empty(), n(2.0), empty(), empty(), n(1.0)]), CellError::Value);
+    }
+
     #[test]
     fn pivotby() {
         let (region, item, amt) = sales();

crates/model/src/workbook.rs

@@ -95,6 +95,10 @@ pub struct CalcSettings {
     pub max_change: f64,
     /// Use precision as displayed.
     pub precision_as_displayed: bool,
+    /// R1C1 reference style (`<calcPr refMode="R1C1"/>`): kept with the file and written back;
+    /// GridCraft itself shows and takes A1 references.
+    #[serde(default)]
+    pub r1c1: bool,
 }
 
 impl Default for CalcSettings {
@@ -105,6 +109,7 @@ impl Default for CalcSettings {
             max_iterations: Self::DEFAULT_ITERATIONS,
             max_change: Self::DEFAULT_CHANGE,
             precision_as_displayed: false,
+            r1c1: false,
         }
     }
 }
@@ -200,6 +205,12 @@ pub struct Workbook {
     pub calc: CalcSettings,
     #[serde(default, skip_serializing_if = "is_all")]
     pub show_objects: ShowObjects,
+    /// Trust Center › Privacy Options › "Remove personal information from file properties on save"
+    /// (`<workbookPr filterPrivacy="1"/>`): kept with the file, and while it is on the author and
+    /// company are left out of the XLSX files GridCraft writes, as Excel leaves them empty. Other
+    /// formats aren't filtered: the workbook's own serialization still holds them.
+    #[serde(default, skip_serializing_if = "std::ops::Not::not")]
+    pub remove_personal_info: bool,
     /// Read and set with [`Workbook::active_sheet`] and [`Workbook::set_active_sheet`].
     pub active_sheet: ActiveSheet,
     /// The workbook window's display settings (`<workbookView>`), kept across an open + save.
@@ -338,6 +349,7 @@ impl Workbook {
             date_system: DateSystem::D1900,
             calc: CalcSettings::default(),
             show_objects: ShowObjects::All,
+            remove_personal_info: false,
             active_sheet: ActiveSheet::default(),
             view: WorkbookView::default(),
             props: DocProps::default(),

crates/ui-egui/src/app.rs

@@ -107,7 +107,9 @@ impl SheetApp {
     pub fn logic(&mut self, ctx: &egui::Context) {
         self.ensure_text_width(ctx);
         // A keytip control request lives one frame: the ribbon consumes it during `ui`, and
-        // anything that never reached a control (collapsed ribbon, tab switch) is dropped.
+        // anything that never reached a control (collapsed ribbon, tab switch) is dropped. One
+        // made with a switch to the control's tab waits, with its window, for the next `ui` of
+        // that window.
         self.ui.keytip_invoke = None;
         // Floating pictures' textures go with their workbook, even when no sheet is painted.
         let open: Vec<u64> = self.session.documents().iter().map(|d| d.uid).collect();
@@ -194,6 +196,9 @@ impl SheetApp {
         let t0 = now_ms();
         // A script may have switched windows since the last frame.
         self.follow_active_window();
+        // This window's key tip request that waited for this frame (its tab or ribbon was just
+        // shown); any other window's request was dropped before it.
+        self.ui.keytip_invoke = self.ui.keytip_invoke_next.take();
         text_box::before_ui(self, &ctx);
         // Another window came forward without going through a command (which settles drafts
         // first): the draft goes into its own window instead of floating over this one. If its

crates/ui-egui/src/app/clipboard.rs

@@ -48,12 +48,41 @@ impl SheetApp {
     }
 
     /// Ribbon and menu Paste: paste the text on the system clipboard, as Cmd/Ctrl+V does. With no
-    /// text there, no host clipboard (web), or the text that was there when GridCraft last copied
-    /// without publishing, GridCraft's own clipboard is pasted.
+    /// text there but a picture, the picture is pasted. With neither, no host clipboard (web), or
+    /// the text that was there when GridCraft last copied without publishing, GridCraft's own
+    /// clipboard is pasted.
     pub fn paste_from_clipboard(&mut self) {
         match self.system_clipboard_text() {
             Some(text) if self.session.clipboard.is_none() || self.clipboard_text_at_copy.as_ref() != Some(&text) => self.paste_external(text),
-            _ => self.run_or_alert("edit.paste", json!({})),
+            Some(_) => self.run_or_alert("edit.paste", json!({})),
+            None => match self.services.paste_image.as_mut().and_then(|read| read()) {
+                Some(image) => self.paste_picture(image),
+                None => self.run_or_alert("edit.paste", json!({})),
+            },
+        }
+    }
+
+    /// Paste a picture from the system clipboard (a screenshot, an image copied in a browser) as
+    /// a floating picture whose top-left corner is the active cell, as Excel does.
+    pub fn paste_picture(&mut self, image: image::RgbaImage) {
+        match encode_png(&image) {
+            Ok(png) => self.run_or_alert("insert.picture", json!({"base64": gridcraft_engine::io::base64_encode(&png), "mime": "image/png"})),
+            Err(e) => self.alert(e),
+        }
+    }
+
+    /// Cmd/Ctrl+V with a picture and no text on the clipboard (egui's `Event::PasteImage`).
+    pub fn paste_color_image(&mut self, image: &egui::ColorImage) {
+        let [w, h] = image.size;
+        // A side too large for u32 is too large to paste; check before copying the pixels.
+        let (w, h) = (u32::try_from(w).unwrap_or(u32::MAX), u32::try_from(h).unwrap_or(u32::MAX));
+        if let Err(e) = check_picture_size(w, h) {
+            return self.alert(e);
+        }
+        let rgba = image.pixels.iter().flat_map(|c| c.to_srgba_unmultiplied()).collect();
+        match image::RgbaImage::from_raw(w, h, rgba) {
+            Some(image) => self.paste_picture(image),
+            None => self.alert("The picture on the clipboard can't be read.".into()),
         }
     }
 
@@ -75,3 +104,29 @@ impl SheetApp {
         }
     }
 }
+
+/// Largest clipboard picture pasted, per side and in total (an 8K screenshot fits).
+const MAX_PICTURE_SIDE: u32 = 16_384;
+const MAX_PICTURE_PIXELS: u64 = 64 * 1024 * 1024;
+
+/// Refuse empty clipboard pictures and sizes that would exhaust memory.
+fn check_picture_size(w: u32, h: u32) -> Result<(), String> {
+    if w == 0 || h == 0 {
+        return Err("The picture on the clipboard is empty.".into());
+    }
+    if w > MAX_PICTURE_SIDE || h > MAX_PICTURE_SIDE || u64::from(w) * u64::from(h) > MAX_PICTURE_PIXELS {
+        return Err("The picture on the clipboard is too large to paste.".into());
+    }
+    Ok(())
+}
+
+/// PNG bytes of a clipboard picture, refusing sizes that would exhaust memory.
+fn encode_png(image: &image::RgbaImage) -> Result<Vec<u8>, String> {
+    let (w, h) = image.dimensions();
+    check_picture_size(w, h)?;
+    let mut png = Vec::new();
+    image
+        .write_to(&mut std::io::Cursor::new(&mut png), image::ImageFormat::Png)
+        .map_err(|e| format!("The picture on the clipboard can't be pasted: {e}"))?;
+    Ok(png)
+}

crates/ui-egui/src/app/commands.rs

@@ -163,8 +163,19 @@ impl SheetApp {
                 Ok(Json::Null)
             }
             "view.expandFormulaBar" => {
-                self.ui.formula_bar_expanded = p.get("on").and_then(Json::as_bool).unwrap_or(!self.ui.formula_bar_expanded);
-                Ok(json!({"on": self.ui.formula_bar_expanded}))
+                // `lines` is where a drag of the bar's bottom edge left it: one line collapses it,
+                // more expands it to that height, which expanding returns to afterwards.
+                if let Some(lines) = p.get("lines").and_then(Json::as_u64) {
+                    let lines = usize::try_from(lines).unwrap_or(usize::MAX).clamp(1, crate::formula_bar::MAX_DRAG_LINES);
+                    self.ui.formula_bar_expanded = lines > 1;
+                    if lines > 1 {
+                        self.ui.formula_bar_lines = lines;
+                    }
+                    Ok(json!({"on": self.ui.formula_bar_expanded, "lines": self.ui.formula_bar_lines}))
+                } else {
+                    self.ui.formula_bar_expanded = p.get("on").and_then(Json::as_bool).unwrap_or(!self.ui.formula_bar_expanded);
+                    Ok(json!({"on": self.ui.formula_bar_expanded}))
+                }
             }
             "view.darkMode" => {
                 let current = if self.ui.system_theme { self.effective_dark } else { self.ui.dark };
@@ -191,6 +202,10 @@ impl SheetApp {
                 self.ui.autocomplete = p.get("on").and_then(Json::as_bool).unwrap_or(!self.ui.autocomplete);
                 Ok(json!({"on": self.ui.autocomplete}))
             }
+            "options.highlightActiveRow" => {
+                self.ui.highlight_active_row = p.get("on").and_then(Json::as_bool).unwrap_or(!self.ui.highlight_active_row);
+                Ok(json!({"on": self.ui.highlight_active_row}))
+            }
             "view.interfaceScale" => {
                 // `{"percent": 125}` or `{"percent": "auto"}`; out-of-range values are clamped.
                 let percent = match p.get("percent") {

crates/ui-egui/src/app/keys.rs

@@ -59,7 +59,22 @@ impl SheetApp {
                 // Route to the ribbon control that owns this keytip: it opens its dropdown or
                 // runs its click handler with the right params (the engine command alone would
                 // be missing them).
-                keytips::Action::Control(id) => self.ui.keytip_invoke = Some(id),
+                //
+                // A control on another tab (a legacy menu key such as Alt+I, S for the Symbol
+                // gallery) shows its tab first, so the control is drawn and takes the request.
+                keytips::Action::Control(id) => {
+                    // A collapsed ribbon draws no controls either: it is expanded the same way.
+                    let other_tab = gridcraft_engine::find_command(id).and_then(|c| c.menu.first()).filter(|t| **t != self.ui.ribbon_tab);
+                    if other_tab.is_some() || self.ui.ribbon_collapsed {
+                        if let Some(tab) = other_tab {
+                            self.run_or_alert("ui.ribbonTab", json!({"tab": tab}));
+                        }
+                        self.ui.ribbon_collapsed = false;
+                        self.ui.keytip_invoke_next = Some(id);
+                    } else {
+                        self.ui.keytip_invoke = Some(id);
+                    }
+                }
             }
         }
     }

crates/ui-egui/src/backstage/options.rs

@@ -2,7 +2,8 @@ use super::{Key, Language, Modifiers, SheetApp, Ui, dim, i18n, json, section, ve
 
 /// Excel's File › Options page: General (display theme, interface language and Show formula bar),
 /// Editing (AutoComplete) and Save (the autosave checkbox toggling `app.ui.autosave`), plus Formulas
-/// (calculation mode and iterative calculation) when a document is active. Theme, language, formula
+/// (calculation mode and iterative calculation) and the display options for this workbook (sheet
+/// tabs and scroll bars) when a document is active. Theme, language, formula
 /// bar, AutoComplete and calculation changes run their commands through `run_or_alert`; calculation
 /// settings are saved with the workbook.
 pub(super) fn options(app: &mut SheetApp, ui: &mut Ui) {
@@ -14,6 +15,10 @@ pub(super) fn options(app: &mut SheetApp, ui: &mut Ui) {
     if ui.checkbox(&mut formula_bar, lang.tr("Show formula bar")).changed() {
         app.run_or_alert("view.formulaBar", json!({"on": formula_bar}));
     }
+    let mut highlight_row = app.ui.highlight_active_row;
+    if ui.checkbox(&mut highlight_row, lang.tr("Highlight the active cell's row")).changed() {
+        app.run_or_alert("options.highlightActiveRow", json!({"on": highlight_row}));
+    }
     ui.add_space(18.0);
     section(ui, lang, "Options|Editing");
     let mut autocomplete = app.ui.autocomplete;
@@ -26,7 +31,20 @@ pub(super) fn options(app: &mut SheetApp, ui: &mut Ui) {
     if ui.checkbox(&mut autosave, lang.tr("Save .xlsx workbooks automatically after every change")).changed() {
         app.toggle_autosave();
     }
-    let Some(calc) = app.session.active().map(|d| d.wb.calc.clone()) else { return };
+    let Some((calc, view)) = app.session.active().map(|d| (d.wb.calc.clone(), d.wb.view)) else { return };
+    ui.add_space(18.0);
+    // Excel's Advanced › Display options for this workbook: saved with the workbook (#3101).
+    section(ui, lang, "Display options for this workbook");
+    for (on, label, id) in [
+        (view.show_horizontal_scroll, "Show horizontal scroll bar", "view.showHorizontalScrollBar"),
+        (view.show_vertical_scroll, "Show vertical scroll bar", "view.showVerticalScrollBar"),
+        (view.show_sheet_tabs, "Show sheet tabs", "view.showSheetTabs"),
+    ] {
+        let mut on = on;
+        if ui.checkbox(&mut on, lang.tr(label)).changed() {
+            app.run_or_alert(id, json!({"on": on}));
+        }
+    }
     ui.add_space(18.0);
     section(ui, lang, "Formulas");
     ui.label(lang.tr("Workbook calculation"));

crates/ui-egui/src/chartview.rs

@@ -316,11 +316,12 @@ pub(crate) fn paint_objects(app: &SheetApp, p: &Painter, geo: &Geo, wb: &Workboo
                 p.add(PathShape::convex_polygon(vec![pos2(r.center().x, r.top()), r.right_bottom(), r.left_bottom()], fill, Stroke::new(1.0, line)));
             }
             ShapeKind::Ink => {
-                let w = gridcraft_engine::cmd::draw::ink_width(sp) * geo.z;
+                let pt = gridcraft_engine::cmd::draw::ink_width(sp);
+                let w = pt * geo.z;
                 let pts: Vec<Pos2> =
                     gridcraft_engine::cmd::draw::ink_points(sp).iter().map(|q| pos2(r.left() + q[0] * geo.z, r.top() + q[1] * geo.z)).collect();
                 if pts.len() >= 2 {
-                    let col = if w > 8.0 { line.gamma_multiply(0.45) } else { line };
+                    let col = ink_color(line, pt);
                     p.add(PathShape::line(pts, PathStroke::new(w, col)));
                 }
                 label = false;
@@ -556,3 +557,9 @@ pub fn hit(app: &SheetApp, geo: &Geo, sh: &Sheet, p: Pos2) -> Option<(ObjRef, Re
     }
     None
 }
+
+/// The colour ink is painted in: a highlighter (a stroke over 8 pt wide) is translucent, by its
+/// width in points, so the live pen stroke and the committed ink agree at every zoom.
+pub(crate) fn ink_color(line: Color32, width_pt: f32) -> Color32 {
+    if width_pt > 8.0 { line.gamma_multiply(0.45) } else { line }
+}

crates/ui-egui/src/control.rs

@@ -263,12 +263,17 @@ pub fn handle(app: &mut SheetApp, ctx: &egui::Context, method: &str, p: &Json) -
                 ("ui.ribbonTab", "Ribbon Tab", ""),
                 ("app.checkForUpdates", "Check for Updates…", ""),
                 ("view.collapseRibbon", "Collapse Ribbon", ""),
-                ("view.expandFormulaBar", "Expand Formula Bar", "{on?: bool} (toggles without it) → {on}"),
+                (
+                    "view.expandFormulaBar",
+                    "Expand Formula Bar",
+                    "{on?: bool} (toggles without it) → {on}; {lines: int} sets the expanded height (1 collapses) → {on, lines}",
+                ),
                 ("ui.pythonMode", "Python Mode", "{on?: bool} (toggles without it) → {on}; a refused start is an error"),
                 ("view.darkMode", "Dark Mode", ""),
                 ("view.theme", "Display Theme", ""),
                 ("view.animations", "Animations", "{on?: bool} (toggles without it) → {on}"),
                 ("options.autoComplete", "Enable AutoComplete for cell values", "{on?: bool} (toggles without it) → {on}"),
+                ("options.highlightActiveRow", "Highlight the active cell's row", "{on?: bool} (toggles without it) → {on}"),
                 ("view.interfaceScale", "Interface Size", "{percent: 75–200 | \"auto\"} (100 = auto; clamped)"),
                 ("ui.dialog", "Open Dialog", ""),
                 ("ui.backstage", "File (Backstage view)", "{page?: home|new|open|info|saveAs|print|export|options|account|close}"),

crates/ui-egui/src/dialogs.rs

@@ -564,6 +564,8 @@ impl Dialog {
                     d.values.insert("text".into(), json!(text));
                     d.values.insert("tooltip".into(), json!(link.tooltip));
                     d.original_link_text = Some(text);
+                    // As in Excel, the dialog on a linked cell edits that link.
+                    d.title = "Edit Hyperlink".into();
                 }
                 d
             }

crates/ui-egui/src/dialogs/find.rs

@@ -40,7 +40,21 @@ pub(super) fn find(app: &mut SheetApp, ui: &mut egui::Ui, d: &mut Dialog) {
     d.values.insert("matchCase".into(), json!(case));
     d.values.insert("wholeCell".into(), json!(whole));
     d.values.insert("within".into(), json!(if wb { "workbook" } else { "sheet" }));
-    let base = json!({"what": what, "matchCase": case, "wholeCell": whole, "within": if wb { "workbook" } else { "sheet" }});
+    // As in Excel, a selected range (more than one cell) limits the search on the sheet to it.
+    // One selected cell, merged or not, searches the sheet, as in Excel.
+    let range_selected = app.session.active().is_some_and(|doc| {
+        let sel = &doc.selection;
+        let one_merged = sel.ranges.len() == 1 && doc.wb.active().and_then(|sh| sh.merge_at(sel.current().start)).is_some_and(|m| m == sel.current());
+        !sel.is_single_cell() && !one_merged
+    });
+    let within = if wb {
+        "workbook"
+    } else if range_selected {
+        "selection"
+    } else {
+        "sheet"
+    };
+    let base = json!({"what": what, "matchCase": case, "wholeCell": whole, "within": within});
     ui.horizontal(|ui| {
         if d.tab == "Replace" {
             if ui.button("Replace All").clicked() {

crates/ui-egui/src/dialogs/paste.rs

@@ -5,6 +5,8 @@ use super::{Dialog, Field, Json, Key, SheetApp, Stroke, json, theme, vec2};
 /// come from the dialog's `fields`, so the letter shortcuts and the control channel see the same.
 pub(super) fn paste_special(app: &mut SheetApp, ui: &mut egui::Ui, d: &mut Dialog, confirm: &mut bool, open: &mut bool) {
     let lang = app.ui.language;
+    // L, the Paste Link button's access key, pastes at once as the button does.
+    let link_now = d.values.remove(PASTE_LINK_NOW).is_some_and(|v| v == json!(true));
     let t = theme::Tokens::get(ui.ctx());
     type Choice = (&'static str, &'static str, Vec<(&'static str, &'static str)>);
     let choices: Vec<Choice> = d
@@ -56,7 +58,7 @@ pub(super) fn paste_special(app: &mut SheetApp, ui: &mut egui::Ui, d: &mut Dialo
     ui.separator();
     ui.horizontal(|ui| {
         // Excel's Paste Link pastes references to the copied cells straight away.
-        if ui.button(lang.tr("Paste Link")).on_hover_text(lang.tr("Paste formulas that refer to the copied cells")).clicked() {
+        if ui.button(lang.tr("Paste Link")).on_hover_text(lang.tr("Paste formulas that refer to the copied cells")).clicked() || link_now {
             d.values.insert("what".into(), json!("all"));
             d.values.insert("operation".into(), json!("none"));
             d.values.insert("link".into(), json!(true));
@@ -74,6 +76,45 @@ pub(super) fn paste_special(app: &mut SheetApp, ui: &mut egui::Ui, d: &mut Dialo
     });
 }
 
+/// Set by the Paste Link access key for the next frame of the dialog, which then pastes.
+const PASTE_LINK_NOW: &str = "pasteLinkNow";
+
+/// What one of Paste Special's access keys does: choose an option of a group, or flip a box.
+#[derive(Clone, Copy)]
+enum Mnemonic {
+    Set(&'static str, &'static str),
+    Toggle(&'static str),
+    /// The Paste Link button: pastes at once.
+    PasteLink,
+}
+
+/// Excel's access keys in Paste Special (#1482): the Paste choices, the operations, the two check
+/// boxes and the Paste Link button, each the letter Excel underlines.
+fn mnemonic_action(key: Key) -> Option<(char, Mnemonic)> {
+    use Mnemonic::{Set, Toggle};
+    Some(match key {
+        Key::A => ('a', Set("what", "all")),
+        Key::F => ('f', Set("what", "formulas")),
+        Key::V => ('v', Set("what", "values")),
+        Key::T => ('t', Set("what", "formats")),
+        Key::C => ('c', Set("what", "comments")),
+        Key::N => ('n', Set("what", "validation")),
+        Key::X => ('x', Set("what", "allExceptBorders")),
+        Key::W => ('w', Set("what", "columnWidths")),
+        Key::R => ('r', Set("what", "formulasAndNumberFormats")),
+        Key::U => ('u', Set("what", "valuesAndNumberFormats")),
+        Key::O => ('o', Set("operation", "none")),
+        Key::D => ('d', Set("operation", "add")),
+        Key::S => ('s', Set("operation", "subtract")),
+        Key::M => ('m', Set("operation", "multiply")),
+        Key::I => ('i', Set("operation", "divide")),
+        Key::B => ('b', Toggle("skipBlanks")),
+        Key::E => ('e', Toggle("transpose")),
+        Key::L => ('l', Mnemonic::PasteLink),
+        _ => return None,
+    })
+}
+
 /// Paste Special's legacy mnemonics select options; Enter still performs the paste.
 pub(super) fn paste_special_shortcuts(d: &mut Dialog, ctx: &egui::Context) {
     if ctx.text_edit_focused() {
@@ -88,14 +129,7 @@ pub(super) fn paste_special_shortcuts(d: &mut Dialog, ctx: &egui::Context) {
     });
     let mac = ctx.os() == egui::os::OperatingSystem::Mac;
     let allowed = |m: egui::Modifiers| !m.ctrl && !m.command && !m.mac_cmd && !(m.alt && (mac || right_alt));
-    let mnemonic = |key| match key {
-        Key::T => Some('t'),
-        Key::V => Some('v'),
-        Key::F => Some('f'),
-        Key::C => Some('c'),
-        Key::E => Some('e'),
-        _ => None,
-    };
+    let mnemonic = |key| mnemonic_action(key).map(|(letter, _)| letter);
     let mut text_to_consume = Vec::new();
     for event in ctx.input(|i| i.events.clone()) {
         let egui::Event::Key { key, pressed: true, repeat, modifiers, .. } = event else { continue };
@@ -107,17 +141,18 @@ pub(super) fn paste_special_shortcuts(d: &mut Dialog, ctx: &egui::Context) {
         if repeat {
             continue;
         }
-        if key == Key::E {
-            let transpose = d.values.get("transpose").and_then(Json::as_bool).unwrap_or(false);
-            d.values.insert("transpose".into(), json!(!transpose));
-        } else {
-            let what = match key {
-                Key::T => "formats",
-                Key::V => "values",
-                Key::F => "formulas",
-                _ => "comments",
-            };
-            d.values.insert("what".into(), json!(what));
+        match mnemonic_action(key).map(|(_, action)| action) {
+            Some(Mnemonic::Set(field, value)) => {
+                d.values.insert(field.into(), json!(value));
+            }
+            Some(Mnemonic::Toggle(field)) => {
+                let on = d.values.get(field).and_then(Json::as_bool).unwrap_or(false);
+                d.values.insert(field.into(), json!(!on));
+            }
+            Some(Mnemonic::PasteLink) => {
+                d.values.insert(PASTE_LINK_NOW.into(), json!(true));
+            }
+            None => {}
         }
     }
     // Browsers can deliver Text before or after Key. Act only on Key, then remove

crates/ui-egui/src/formula_bar.rs

@@ -12,6 +12,14 @@ use crate::theme::{self, Tokens};
 
 /// Lines the formula bar (and the in-cell editor) grows to before it scrolls.
 pub const MAX_LINES: usize = 5;
+/// The most lines a drag of the bar's bottom edge can give it (the window caps it at half its
+/// height first).
+pub const MAX_DRAG_LINES: usize = 100;
+/// How far the bar's bottom edge reaches up into the bar as a resize handle (its bottom margin).
+const HANDLE: f32 = 4.0;
+/// What an expanded bar leaves below it: the status bar (26) and sheet tabs (32), and the
+/// worksheet's column headings and two rows, so the grid never disappears in a short window.
+const KEEP_BELOW: f32 = 26.0 + 32.0 + crate::grid::COL_HEADER_H + 2.0 * gridcraft_engine::model::DEFAULT_ROW_HEIGHT;
 /// The bar's height at one line.
 const ONE_LINE: f32 = 30.0;
 /// What the bar adds around the field's rows: the panel's margins (3 + 3), the field's (3 + 3)
@@ -40,11 +48,22 @@ pub struct BarLayout {
     pub visible_lines: usize,
     /// The caret while editing in the bar.
     pub caret: Option<Rect>,
+    /// The bottom edge that resizes the bar.
+    pub handle: Rect,
 }
 
 impl Default for BarLayout {
     fn default() -> Self {
-        BarLayout { name_box: Rect::NOTHING, buttons: Rect::NOTHING, field: Rect::NOTHING, height: 0.0, lines: 1, visible_lines: 1, caret: None }
+        BarLayout {
+            name_box: Rect::NOTHING,
+            buttons: Rect::NOTHING,
+            field: Rect::NOTHING,
+            height: 0.0,
+            lines: 1,
+            visible_lines: 1,
+            caret: None,
+            handle: Rect::NOTHING,
+        }
     }
 }
 
@@ -73,13 +92,15 @@ pub fn show(app: &mut SheetApp, ui: &mut egui::Ui) {
     let font = theme::ui_font(13.0);
     let row_h = ui.ctx().fonts_mut(|f| f.row_height(&font));
     let last = BarLayout::get(ui.ctx());
-    // Height follows the content's line count (last frame's), 1 to MAX_LINES; the chevron pins it
-    // at MAX_LINES. It eases only when that target changes.
-    let lines = if app.ui.formula_bar_expanded { MAX_LINES } else { last.lines.clamp(1, MAX_LINES) };
+    // Height follows the content's line count (last frame's), 1 to MAX_LINES; expanded (the
+    // chevron), it is the height the bottom edge was dragged to. It eases only when that target
+    // changes.
+    let most = max_lines(ui.ctx().content_rect().height(), ui.available_rect_before_wrap().height(), row_h);
+    let lines = if app.ui.formula_bar_expanded { app.ui.formula_bar_lines.clamp(1, most) } else { last.lines.clamp(1, MAX_LINES) };
     let target = one_line(row_h) + (lines - 1) as f32 * row_h;
     let h = ui.ctx().animate_value_with_time(egui::Id::unique("formula_bar.height"), target, EASE_SECONDS);
     let mut layout = BarLayout { height: h, ..Default::default() };
-    egui::Panel::top("formula_bar")
+    let panel = egui::Panel::top("formula_bar")
         .exact_size(h)
         .frame(egui::Frame::NONE.fill(t.window).inner_margin(egui::Margin { left: 8, right: 8, top: 3, bottom: 3 }))
         .show(ui, |ui| {
@@ -156,9 +177,62 @@ pub fn show(app: &mut SheetApp, ui: &mut egui::Ui) {
                 }
             });
         });
+    layout.handle = resize_handle(app, ui, panel.response.rect, row_h, most);
     ui.ctx().data_mut(|d| d.insert_temp(BarLayout::id(), layout));
 }
 
+/// The most lines the bar takes in a window `window_h` tall with `room` left under the ribbon:
+/// half the window, as in Excel (never fewer than the chevron's [`MAX_LINES`]), and no more than
+/// leaves [`KEEP_BELOW`] for the status bar, sheet tabs and a few rows of the grid.
+fn max_lines(window_h: f32, room: f32, row_h: f32) -> usize {
+    let lines_in = |h: f32| {
+        let fit = ((h - one_line(row_h)) / row_h).floor();
+        if fit.is_finite() && fit > 0.0 { fit as usize + 1 } else { 1 }
+    };
+    lines_in(window_h * 0.5).clamp(MAX_LINES, MAX_DRAG_LINES).min(lines_in(room - KEEP_BELOW))
+}
+
+/// The lines a bar whose top is at `top` shows with its bottom edge dragged to `y`, in whole lines.
+fn dragged_lines(y: f32, top: f32, row_h: f32, most: usize) -> usize {
+    let extra = ((y - top - one_line(row_h)) / row_h).round();
+    if extra.is_finite() && extra > 0.0 { (extra as usize + 1).min(most) } else { 1 }
+}
+
+/// The bar's bottom edge: dragging it sets the bar's height in whole lines, as in Excel. The bar
+/// follows the pointer; the release runs `view.expandFormulaBar` with the lines, so one drag is
+/// one step (one line collapses the bar).
+fn resize_handle(app: &mut SheetApp, ui: &mut egui::Ui, bar: Rect, row_h: f32, most: usize) -> Rect {
+    let handle = Rect::from_x_y_ranges(bar.x_range(), (bar.bottom() - HANDLE)..=bar.bottom());
+    let resp = ui.interact(handle, egui::Id::unique("formula_bar.resize"), Sense::drag());
+    let name = app.ui.language.tr("Resize formula bar");
+    resp.widget_info(|| egui::WidgetInfo::labeled(egui::Role::Button, true, name));
+    if resp.hovered() || resp.dragged() {
+        ui.ctx().set_cursor_icon(egui::CursorIcon::ResizeVertical);
+    }
+    // The state before the drag: the preview changes it, the release puts it back for the command.
+    let before = resp.id.with("before");
+    if resp.drag_started() {
+        let state = (app.ui.formula_bar_expanded, app.ui.formula_bar_lines);
+        ui.ctx().data_mut(|d| d.insert_temp(before, state));
+    }
+    if let Some(p) = resp.interact_pointer_pos().filter(|_| resp.dragged() || resp.drag_stopped()) {
+        let lines = dragged_lines(p.y, bar.top(), row_h, most);
+        if resp.drag_stopped() {
+            if let Some((expanded, kept)) = ui.ctx().data_mut(|d| d.remove_temp::<(bool, usize)>(before)) {
+                (app.ui.formula_bar_expanded, app.ui.formula_bar_lines) = (expanded, kept);
+            }
+            app.run_or_alert("view.expandFormulaBar", json!({"lines": lines}));
+        } else {
+            app.ui.formula_bar_expanded = lines > 1;
+            if lines > 1 {
+                app.ui.formula_bar_lines = lines;
+            }
+            ui.ctx().request_repaint();
+        }
+    }
+    handle
+}
+
 /// Resolve ownership on every frame; never cache a spill range in presentation state.
 pub(crate) fn active_spill_anchor(app: &SheetApp) -> Option<gridcraft_engine::core::CellRef> {
     let d = app.session.active()?;

crates/ui-egui/src/grid.rs

@@ -22,6 +22,8 @@ type PagesCache = ((u64, u64, usize), Vec<(RangeRef, u32)>);
 /// Cached Show Details cells, keyed by (doc uid, revision, sheet, pivot).
 type DetailsCache = ((u64, u64, usize, usize), Option<std::collections::HashSet<(u32, u32)>>);
 
+mod active_row;
+pub use active_row::active_row_band;
 mod cell_paint;
 mod cursor;
 mod editor;
@@ -101,6 +103,10 @@ pub enum Drag {
     Select,
     Rows(u32),
     Cols(u32),
+    /// Point mode over the row headers: the formula's reference runs from this row to the pointer.
+    PointRows(u32),
+    /// Point mode over the column headers: the formula's reference runs from this column to the pointer.
+    PointCols(u32),
     /// Reordering one contiguous whole-column selection by its header.
     MoveCols {
         source: RangeRef,

crates/ui-egui/src/grid/active_row.rs

@@ -0,0 +1,28 @@
+//! "Highlight the active cell's row" (File ▸ Options ▸ General): a tint across the whole row of
+//! the active cell, so the eye keeps its place in a wide table.
+
+use super::geo::Geo;
+use super::quadrant::QuadrantPaint;
+use super::{Rect, Sheet, pos2};
+
+/// The tinted band of `row` inside one quadrant (`rows` x `cols`): none when the row is outside
+/// the quadrant or hidden.
+pub fn active_row_band(geo: &Geo, sh: &Sheet, row: u32, rows: (u32, u32), cols: (u32, u32)) -> Option<Rect> {
+    let height = sh.row_height(row) * geo.z;
+    if row < rows.0 || row > rows.1 || height <= 0.0 {
+        return None;
+    }
+    let top = geo.y(sh, row);
+    let right = geo.x(sh, cols.1) + sh.col_width(cols.1) * geo.z;
+    Some(Rect::from_min_max(pos2(geo.x(sh, cols.0), top), pos2(right, top + height)))
+}
+
+/// Paints the band of one quadrant, when the preference is on. With `within`, only the part of it
+/// inside that area (text running past its cell has just cleared it).
+pub(super) fn paint_active_row(q: &QuadrantPaint<'_>, within: Option<Rect>) {
+    let Some(band) = q.active_row.and_then(|row| active_row_band(q.geo, q.sheet, row, q.rows, q.cols)) else { return };
+    let part = within.map_or(band, |area| band.intersect(area));
+    if part.is_positive() {
+        q.painter.rect_filled(part, 0.0, q.tokens.active_row);
+    }
+}

crates/ui-egui/src/grid/cell_paint.rs

@@ -194,7 +194,7 @@ pub(super) fn merged_edges(wb: &Workbook, si: usize, sh: &Sheet, geo: &Geo, area
         if sh.col_width(col) == 0.0 {
             continue;
         }
-        let (x0, x1) = (geo.x(sh, col), geo.x(sh, col.saturating_add(1)));
+        let (x0, x1) = (geo.x(sh, col), geo.x_end(sh, col));
         let top = look(wb, si, sh, CellRef::new(m.start.row, col), cf).0.style.borders.top;
         let bottom = look(wb, si, sh, CellRef::new(m.end.row, col), cf).0.style.borders.bottom;
         out.push((top, [pos2(x0, rect.top()), pos2(x1, rect.top())]));
@@ -205,7 +205,7 @@ pub(super) fn merged_edges(wb: &Workbook, si: usize, sh: &Sheet, geo: &Geo, area
         if sh.row_height(row) == 0.0 {
             continue;
         }
-        let (y0, y1) = (geo.y(sh, row), geo.y(sh, row.saturating_add(1)));
+        let (y0, y1) = (geo.y(sh, row), geo.y_end(sh, row));
         let left = look(wb, si, sh, CellRef::new(row, m.start.col), cf).0.style.borders.left;
         let right = look(wb, si, sh, CellRef::new(row, m.end.col), cf).0.style.borders.right;
         out.push((left, [pos2(rect.left(), y0), pos2(rect.left(), y1)]));

crates/ui-egui/src/grid/cursor.rs

@@ -48,7 +48,7 @@ fn drag_cursor(drag: &Drag, rtl: bool) -> Option<CursorIcon> {
     match drag {
         Drag::None => None,
         Drag::Select => Some(CursorIcon::Cell),
-        Drag::Rows(_) | Drag::Cols(_) => Some(CursorIcon::Default),
+        Drag::Rows(_) | Drag::Cols(_) | Drag::PointRows(_) | Drag::PointCols(_) => Some(CursorIcon::Default),
         Drag::Fill { .. } => Some(CursorIcon::Crosshair),
         Drag::Move { .. } | Drag::MoveCols { .. } | Drag::Object { handle: None, .. } => Some(CursorIcon::Move),
         Drag::ResizeCol { .. } => Some(CursorIcon::ResizeColumn),

crates/ui-egui/src/grid/editor.rs

@@ -125,7 +125,7 @@ pub(super) fn list_picker(app: &mut SheetApp, ui: &mut egui::Ui, geo: &Geo, was_
         app.grid.list_picker = None;
         return;
     };
-    let items = gridcraft_engine::cmd::data::list_items(&wb, si, &dv);
+    let items = gridcraft_engine::cmd::data::list_items(&wb, si, c, &dv);
     let r = geo.cell_rect(sh, c);
     // Fit the popup to its rows (up to LIST_PICKER_MAX_ROWS); without a minimum the scroll area collapses to its 64 px default.
     let height = list_picker_height(items.len(), LIST_PICKER_ROW_H, ui.spacing().item_spacing.y);

crates/ui-egui/src/grid/geo.rs

@@ -158,11 +158,21 @@ impl Geo {
             self.cells.top() + self.frozen_h + (self.ri.start(row) as f32 - self.ri.start(self.fr) as f32 - self.scroll.y) * self.z
         }
     }
+    /// Screen x of `col`'s right edge. Not `x(col + 1)`: across the freeze line (and between
+    /// pages) the next column is laid out elsewhere (#2544).
+    pub fn x_end(&self, sh: &Sheet, col: u32) -> f32 {
+        self.x(sh, col) + sh.col_width(col) * self.z
+    }
+    /// Screen y of `row`'s bottom edge (see `x_end`).
+    pub fn y_end(&self, sh: &Sheet, row: u32) -> f32 {
+        self.y(sh, row) + sh.row_height(row) * self.z
+    }
+    /// Columns `a` and `b` are on the same side of the freeze line, so they scroll together.
+    pub fn same_col_pane(&self, a: u32, b: u32) -> bool {
+        (a < self.fc) == (b < self.fc)
+    }
     pub fn cell_rect(&self, sh: &Sheet, c: CellRef) -> Rect {
-        Rect::from_min_max(
-            pos2(self.x(sh, c.col), self.y(sh, c.row)),
-            pos2(self.x(sh, c.col) + sh.col_width(c.col) * self.z, self.y(sh, c.row) + sh.row_height(c.row) * self.z),
-        )
+        Rect::from_min_max(pos2(self.x(sh, c.col), self.y(sh, c.row)), pos2(self.x_end(sh, c.col), self.y_end(sh, c.row)))
     }
     pub fn range_rect(&self, sh: &Sheet, r: RangeRef) -> Rect {
         let a = self.cell_rect(sh, r.start);

crates/ui-egui/src/grid/interact.rs

@@ -225,10 +225,10 @@ fn handle_draw_tool(app: &mut SheetApp, input: &InteractionInput<'_>) -> bool {
                         ))
                     })
                     .collect();
-                input
-                    .ui
-                    .painter()
-                    .add(egui::epaint::PathShape::line(pts, egui::epaint::PathStroke::new(2.0 * geo.z, Color32::from_rgb(0x1F, 0x5F, 0xC9))));
+                // The line under the pointer is the ink the stroke will commit (#1786).
+                let theme = app.session.active().map(|d| d.wb.theme.clone()).unwrap_or_default();
+                let (color, width) = pen_ink(&app.session.draw_color, app.session.draw_width, &theme);
+                input.ui.painter().add(egui::epaint::PathShape::line(pts, egui::epaint::PathStroke::new(width * geo.z, color)));
             }
             if resp.drag_stopped() && app.grid.ink.len() >= 2 {
                 let pts: Vec<[f32; 2]> = std::mem::take(&mut app.grid.ink);
@@ -249,6 +249,17 @@ fn handle_draw_tool(app: &mut SheetApp, input: &InteractionInput<'_>) -> bool {
     false
 }
 
+/// The colour and width (points) of the ink a pen stroke commits, as `draw.stroke` stores it (the
+/// pen's colour, pen blue by default; its width, 2 pt by default, kept to 0.5–40 pt and stored
+/// whole) and as Ink shapes paint it (a highlighter, over 8 pt, is translucent).
+pub(crate) fn pen_ink(color: &str, width: f32, theme: &gridcraft_engine::model::Theme) -> (Color32, f32) {
+    let pen_blue = gridcraft_engine::model::Color::rgb(0x1F, 0x5F, 0xC9);
+    let line = gridcraft_engine::model::Color::from_hex(color).unwrap_or(pen_blue);
+    let width = if width <= 0.0 { 2.0 } else { width }.clamp(0.5, 40.0).round().max(1.0);
+    let color = line.resolve(theme).map(crate::theme::color32).unwrap_or(Color32::from_rgb(0x1F, 0x5F, 0xC9));
+    (crate::chartview::ink_color(color, width), width)
+}
+
 fn handle_header_autofit(app: &mut SheetApp, input: &InteractionInput<'_>) -> bool {
     let (geo, sh, sel, pos) = (input.geo, input.sheet, &input.selection, input.position);
     let (in_col_header, in_row_header) = (input.in_column_header, input.in_row_header);
@@ -307,6 +318,7 @@ fn handle_column_header_press(app: &mut SheetApp, input: &InteractionInput<'_>,
             return;
         }
         if point_header(app, wb, sh, RangeRef::cols(c, c), mods.shift, mods.command) {
+            point_header_first_move(app, input);
             return;
         }
         // An armed Format Painter paints the columns dragged over instead of moving them.
@@ -337,6 +349,7 @@ fn handle_row_header_press(app: &mut SheetApp, input: &InteractionInput<'_>, p:
         }
         let r = geo.row_at(sh, p.y);
         if point_header(app, wb, sh, RangeRef::rows(r, r), mods.shift, mods.command) {
+            point_header_first_move(app, input);
             return;
         }
         let range = if mods.shift { RangeRef::rows(sel.anchor.row.min(r), sel.anchor.row.max(r)) } else { RangeRef::rows(r, r) };
@@ -612,6 +625,10 @@ fn handle_dragging(app: &mut SheetApp, input: &InteractionInput<'_>) {
                     app.session.run("selection.set", json!({"range": RangeRef::cols(anchor.min(c), anchor.max(c)).a1(), "active": sel.active.a1()}));
                 scroll_by(app, vec2(auto.x, 0.0));
             }
+            drag @ (Drag::PointRows(_) | Drag::PointCols(_)) => {
+                point_header_to(app, geo, sh, wb, &drag, p);
+                scroll_by(app, if matches!(drag, Drag::PointRows(_)) { vec2(0.0, auto.y) } else { vec2(auto.x, 0.0) });
+            }
             Drag::MoveCols { source, .. } => {
                 let col = geo.col_at(sh, p.x.clamp(geo.cells.left() + 1.0, geo.cells.right() - 1.0));
                 let midpoint = geo.x(sh, col) + sh.col_width(col) * geo.z * 0.5;
@@ -688,6 +705,14 @@ fn handle_release(app: &mut SheetApp, input: &InteractionInput<'_>) {
             }
             // Whole rows or columns clicked or dragged over by their headers.
             Drag::Rows(_) | Drag::Cols(_) => format_painter_apply(app),
+            // The release may be the first frame to report the pointer's last position.
+            drag @ (Drag::PointRows(_) | Drag::PointCols(_)) => {
+                if resp.drag_stopped()
+                    && let Some(p) = pos
+                {
+                    point_header_to(app, geo, sh, wb, &drag, p);
+                }
+            }
             // Esc mid-drag lands here too (egui ends the drag on Esc): no menu, and the key is
             // spent on the drag so the grid's Esc doesn't also drop the copy.
             Drag::Fill { target: Some(t), menu: true } => {
@@ -719,9 +744,9 @@ fn handle_release(app: &mut SheetApp, input: &InteractionInput<'_>) {
             }
             Drag::Move { to: Some(to), .. } => {
                 let src = sel.current();
+                // Dropping on cells that hold data asks first, as in Excel.
                 if to != src.start {
-                    let _ = app.session.run("edit.cut", json!({"range": src.a1()}));
-                    let _ = app.run("edit.paste", json!({"at": to.a1()}));
+                    crate::macro_ui::call(app, "GridCraft", "range.move", json!({"range": src.a1(), "to": to.a1()}));
                 }
             }
             Drag::MoveCols { source, before: Some(before) } => {
@@ -751,11 +776,13 @@ fn format_painter_apply(app: &mut SheetApp) {
     }
 }
 
-/// Point mode on a header: inserts a whole-row or whole-column reference instead of selecting.
+/// Point mode on a header: inserts a whole-row or whole-column reference instead of selecting,
+/// and dragging on from there extends it.
 fn point_header(app: &mut SheetApp, wb: &Workbook, sh: &Sheet, range: RangeRef, extend: bool, add: bool) -> bool {
     let Some(ed) = app.editor.as_mut().filter(|ed| ed.can_point()) else { return false };
     let edit_sheet = ed.sheet;
     let active_sheet = wb.active_sheet();
+    let pressed = range;
     let range = if extend {
         ed.point
             .and_then(|point| crate::editor::formula_refs(&ed.text).into_iter().find(|(start, end, ..)| (*start, *end) == point))
@@ -776,9 +803,7 @@ fn point_header(app: &mut SheetApp, wb: &Workbook, sh: &Sheet, range: RangeRef,
     } else {
         range
     };
-    let reference = range.a1();
-    let reference =
-        if ed.sheet != wb.active_sheet() { format!("{}!{reference}", gridcraft_engine::formula::quote_sheet(&sh.name)) } else { reference };
+    let reference = header_reference(ed, wb, sh, range);
     if add {
         ed.append_ref(&reference);
     } else {
@@ -787,9 +812,53 @@ fn point_header(app: &mut SheetApp, wb: &Workbook, sh: &Sheet, range: RangeRef,
     ed.point_anchor = None;
     ed.point_cell = Some(range.start);
     ed.request_focus = true;
+    // The drag keeps the end of the reference the press didn't land on.
+    app.grid.drag = if range.is_full_cols() {
+        Drag::PointCols(if range.start.col == pressed.start.col { range.end.col } else { range.start.col })
+    } else {
+        Drag::PointRows(if range.start.row == pressed.start.row { range.end.row } else { range.start.row })
+    };
     true
 }
 
+fn header_reference(ed: &EditState, wb: &Workbook, sh: &Sheet, range: RangeRef) -> String {
+    let reference = range.a1();
+    if ed.sheet != wb.active_sheet() { format!("{}!{reference}", gridcraft_engine::formula::quote_sheet(&sh.name)) } else { reference }
+}
+
+/// The frame that starts a drag reports no `dragged()`, so its movement is applied here.
+fn point_header_first_move(app: &mut SheetApp, input: &InteractionInput<'_>) {
+    if input.response.drag_started()
+        && let Some(p) = input.position
+    {
+        let drag = app.grid.drag.clone();
+        point_header_to(app, input.geo, input.sheet, input.workbook, &drag, p);
+    }
+}
+
+/// Point mode dragged over the headers: the pointed reference runs from the anchor to the pointer.
+fn point_header_to(app: &mut SheetApp, geo: &Geo, sh: &Sheet, wb: &Workbook, drag: &Drag, p: Pos2) {
+    // The pointer's end moves with Shift+arrow next; the opposite corner keeps it a whole column or row.
+    let (range, pointer, opposite) = match *drag {
+        Drag::PointCols(anchor) => {
+            let col = geo.col_at(sh, p.x.clamp(geo.cells.left() + 1.0, geo.cells.right() - 1.0));
+            let range = RangeRef::cols(anchor.min(col), anchor.max(col));
+            (range, CellRef::new(range.start.row, col), CellRef::new(range.end.row, anchor))
+        }
+        Drag::PointRows(anchor) => {
+            let row = geo.row_at(sh, p.y.clamp(geo.cells.top() + 1.0, geo.cells.bottom() - 1.0));
+            let range = RangeRef::rows(anchor.min(row), anchor.max(row));
+            (range, CellRef::new(row, range.start.col), CellRef::new(anchor, range.end.col))
+        }
+        _ => return,
+    };
+    let Some(ed) = app.editor.as_mut().filter(|ed| ed.point_at_caret()) else { return };
+    let reference = header_reference(ed, wb, sh, range);
+    ed.insert_ref(&reference);
+    ed.point_cell = Some(pointer);
+    ed.point_anchor = Some((wb.active_sheet(), opposite));
+}
+
 fn select_to_pointer(app: &mut SheetApp, geo: &Geo, sh: &Sheet, wb: &Workbook, p: Pos2) {
     let cell = CellRef::new(
         geo.row_at(sh, p.y.clamp(geo.cells.top() + 1.0, geo.cells.bottom() - 1.0)),
@@ -891,7 +960,7 @@ fn freeze_boundary(geo: &Geo, sh: &Sheet, p: Pos2, cols: bool) -> u32 {
             return 0;
         }
         let c = geo.col_at(sh, p.x);
-        let (l, r) = (geo.x(sh, c), geo.x(sh, c.saturating_add(1).min(MAX_COLS - 1)));
+        let (l, r) = (geo.x(sh, c), geo.x_end(sh, c));
         let b = if p.x - l > r - p.x { c.saturating_add(1) } else { c };
         let room = geo.ci.at((((geo.cells.width() - 40.0) / geo.z).max(0.0)) as f64);
         b.min(room).min(MAX_COLS - 1)
@@ -900,7 +969,7 @@ fn freeze_boundary(geo: &Geo, sh: &Sheet, p: Pos2, cols: bool) -> u32 {
             return 0;
         }
         let rr = geo.row_at(sh, p.y);
-        let (t, b2) = (geo.y(sh, rr), geo.y(sh, rr.saturating_add(1).min(MAX_ROWS - 1)));
+        let (t, b2) = (geo.y(sh, rr), geo.y_end(sh, rr));
         let b = if p.y - t > b2 - p.y { rr.saturating_add(1) } else { rr };
         let room = geo.ri.at((((geo.cells.height() - 40.0) / geo.z).max(0.0)) as f64);
         b.min(room).min(MAX_ROWS - 1)
@@ -1038,9 +1107,27 @@ pub fn point_move(app: &mut SheetApp, ed: &mut EditState, dr: i64, dc: i64, exte
         to
     };
     let text = if extend { RangeRef::new(anchor, to).a1() } else { to.a1() };
+    let text = if ed.sheet != d.wb.active_sheet() { format!("{}!{text}", gridcraft_engine::formula::quote_sheet(&sheet.name)) } else { text };
     let sheet = d.wb.active_sheet();
     ed.insert_ref(&text);
     ed.point_cell = Some(to);
     ed.point_anchor = Some((sheet, anchor));
     app.grid.ensure_visible = true;
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn the_pen_preview_is_the_ink_the_stroke_commits() {
+        // #1786: the preview was always blue at 2 pt, whatever the pen.
+        let theme = gridcraft_engine::model::Theme::default();
+        assert_eq!(pen_ink("#C00000", 3.0, &theme), (Color32::from_rgb(0xC0, 0, 0), 3.0));
+        assert_eq!(pen_ink("", 0.0, &theme), (Color32::from_rgb(0x1F, 0x5F, 0xC9), 2.0), "no pen chosen yet: pen blue, 2 pt");
+        assert_eq!(pen_ink("not a colour", 0.2, &theme), (Color32::from_rgb(0x1F, 0x5F, 0xC9), 1.0));
+        // A highlighter is wide and translucent, as the committed ink is painted.
+        let (c, w) = pen_ink("#FFFF00", 12.0, &theme);
+        assert_eq!((c, w), (Color32::from_rgb(0xFF, 0xFF, 0).gamma_multiply(0.45), 12.0));
+    }
+}

crates/ui-egui/src/grid/keyboard.rs

@@ -51,11 +51,9 @@ pub(super) fn keyboard(app: &mut SheetApp, ctx: &egui::Context, resp: &egui::Res
                 app.copy_to_clipboard(ctx, "edit.cut");
             }
             egui::Event::Paste(text) => app.paste_external(text),
-            // GridCraft has no image-clipboard pipeline and no cell-picture insert-from-clipboard
-            // command. Choosing to ignore `PasteImage` is explicit: inserting the bytes as a
-            // floating picture without a chosen anchor/size would be a new feature, not parity.
-            // A text representation, when the clipboard has one, still arrives as `Paste` above.
-            egui::Event::PasteImage(_) => {}
+            // A picture with no text on the clipboard (a screenshot, a browser image) is pasted as
+            // a floating picture at the active cell, as Excel does.
+            egui::Event::PasteImage(image) => app.paste_color_image(&image),
             // PRIMARY middle-click paste belongs to egui's TextEdit; the grid has no caret to
             // insert text at, so a middle click on a cell is deliberately not a paste.
             egui::Event::MiddleClickPaste { .. } => {}

crates/ui-egui/src/grid/menus.rs

@@ -129,6 +129,9 @@ pub(super) fn context_menu(app: &mut SheetApp, ui: &mut egui::Ui) {
         egui::Frame::popup(ui.style()).show(ui, |ui| {
             ui.set_min_width(200.0);
             let insert_copied = insert_copied_item(app);
+            // On a cell with a link Excel offers to edit, open or remove it (#2120).
+            let link =
+                app.session.active().and_then(|d| d.wb.active().and_then(|sh| sh.hyperlinks.get(&d.selection.active)).map(|l| l.target.clone()));
             let mut items: Vec<(&str, &str)> = vec![
                 ("Cut", "edit.cut"),
                 ("Copy", "edit.copy"),
@@ -154,6 +157,14 @@ pub(super) fn context_menu(app: &mut SheetApp, ui: &mut egui::Ui) {
             if let Some(item) = insert_copied {
                 items.insert(6, item);
             }
+            if link.is_some()
+                && let Some(i) = items.iter().position(|(_, id)| *id == "ui:insertLink")
+            {
+                items.splice(
+                    i..=i,
+                    [("Edit Hyperlink…", "ui:insertLink"), ("Open Hyperlink", "ui:openLink"), ("Remove Hyperlink", "edit.clearHyperlinks")],
+                );
+            }
             if show_details_offered(app)
                 && let Some(i) = items.iter().position(|(_, id)| *id == "data.sortDescending")
             {
@@ -178,6 +189,11 @@ pub(super) fn context_menu(app: &mut SheetApp, ui: &mut egui::Ui) {
                         "ui:newNote" => app.open_dialog("comment", json!({"threaded": false})),
                         "ui:defineName" => app.open_dialog("defineName", json!({})),
                         "ui:insertLink" => app.open_dialog("insertLink", json!({})),
+                        "ui:openLink" => {
+                            if let Some(target) = &link {
+                                super::interact::follow_link(app, target);
+                            }
+                        }
                         "ui:pickList" => app.open_dialog("pickList", json!({})),
                         "ui:filterValue" => {
                             if let Some(d) = app.session.active() {

crates/ui-egui/src/grid/quadrant.rs

@@ -1,3 +1,4 @@
+use super::active_row::paint_active_row;
 use super::cell_paint::{
     Look, MergedArea, cell_text_y, center_across_end, col32, display_text, look, merged_edges, paint_border, paint_cf_icon, painted_halign,
     rotated_text_pos, shrink_font, wrapped_cell_text_y,
@@ -102,6 +103,8 @@ pub(crate) struct QuadrantPaint<'a> {
     pub(crate) cols: (u32, u32),
     pub(crate) cf: &'a mut CfCache,
     pub(crate) tokens: &'a Tokens,
+    /// The row to tint, when "Highlight the active cell's row" is on.
+    pub(crate) active_row: Option<u32>,
 }
 
 /// Paint a worksheet quadrant, including backgrounds, borders, and text.
@@ -118,6 +121,8 @@ pub(crate) fn paint_quadrant(mut quadrant: QuadrantPaint<'_>) {
     let cells = visible_cells(&quadrant);
     let looks = paint_backgrounds(&mut quadrant, &cells, &merges);
     let outside = outside_text_cells(&mut quadrant, &merges);
+    // Over the fills and under the text and borders.
+    paint_active_row(&quadrant, None);
     paint_cells(&mut quadrant, &looks, &outside, &merges);
     paint_borders(&mut quadrant, &looks, &merges);
     paint_sparklines(&quadrant, range);
@@ -142,21 +147,17 @@ fn paint_gridlines(q: &QuadrantPaint<'_>) {
     if sh.show_gridlines {
         let stroke = Stroke::new(1.0, t.gridline);
         let top = geo.y(sh, r0);
-        let bottom = geo.y(sh, r1 + 1);
+        let bottom = geo.y_end(sh, r1);
         let left = geo.x(sh, c0);
-        let right = geo.x(sh, c1 + 1);
-        for c in c0..=c1 + 1 {
-            if c <= c1 && sh.col_width(c) == 0.0 {
-                continue;
-            }
-            let x = geo.x(sh, c).round() - 0.5;
+        let right = geo.x_end(sh, c1);
+        let xs = (c0..=c1).filter(|&c| sh.col_width(c) > 0.0).map(|c| geo.x(sh, c)).chain([right]);
+        for x in xs {
+            let x = x.round() - 0.5;
             p.line_segment([pos2(x, top), pos2(x, bottom)], stroke);
         }
-        for r in r0..=r1 + 1 {
-            if r <= r1 && sh.row_height(r) == 0.0 {
-                continue;
-            }
-            let y = geo.y(sh, r).round() - 0.5;
+        let ys = (r0..=r1).filter(|&r| sh.row_height(r) > 0.0).map(|r| geo.y(sh, r)).chain([bottom]);
+        for y in ys {
+            let y = y.round() - 0.5;
             p.line_segment([pos2(left, y), pos2(right, y)], stroke);
         }
     }
@@ -224,7 +225,6 @@ fn outside_text_cells(q: &mut QuadrantPaint<'_>, merges: &[RangeRef]) -> Vec<(Ce
     // Text cells just outside the quadrant whose text may overflow into it: the nearest non-empty
     // cell left of `c0` and right of `c1` in each row (within the same frozen / scrolled pane).
     let mut outside: Vec<(CellRef, Rect, Look, Option<CfLook>)> = Vec::new();
-    let same_pane = |col: u32| (col < geo.fc) == (c0 < geo.fc);
     for r in r0..=r1 {
         if sh.row_height(r) == 0.0 {
             continue;
@@ -232,7 +232,7 @@ fn outside_text_cells(q: &mut QuadrantPaint<'_>, merges: &[RangeRef]) -> Vec<(Ce
         let left = (c0.saturating_sub(20)..c0).rev().map(|col| CellRef::new(r, col)).find(|&n| !empty_ok(n));
         let right = (c1.saturating_add(1)..=c1.saturating_add(20).min(MAX_COLS - 1)).map(|col| CellRef::new(r, col)).find(|&n| !empty_ok(n));
         for n in [left, right].into_iter().flatten() {
-            if same_pane(n.col) && sh.col_width(n.col) > 0.0 && in_merge(n).is_none() {
+            if geo.same_col_pane(n.col, c0) && sh.col_width(n.col) > 0.0 && in_merge(n).is_none() {
                 let (lk, cfl) = look(wb, si, sh, n, cf);
                 outside.push((n, geo.cell_rect(sh, n), lk, cfl));
             }
@@ -333,7 +333,9 @@ fn paint_cell(q: &QuadrantPaint<'_>, painted: &(CellRef, Rect, Look, Option<CfLo
     let z = geo.z;
     let (c0, c1) = q.cols;
     let in_merge = |cell| merges.iter().find(|m| m.contains(cell)).copied();
-    let empty_ok = |cell| sh.value_ref(cell).is_none_or(Value::is_empty) && in_merge(cell).is_none();
+    // Text overflows only into empty cells of its own pane: the frozen and scrolled columns move
+    // apart when scrolling (#2544).
+    let empty_ok = |cell: CellRef| geo.same_col_pane(cell.col, c.col) && sh.value_ref(cell).is_none_or(Value::is_empty) && in_merge(cell).is_none();
     if paint_cell_decorations(q, c, *rect, lk, cfl.as_ref()) {
         return;
     }
@@ -454,12 +456,12 @@ fn paint_cell(q: &QuadrantPaint<'_>, painted: &(CellRef, Rect, Look, Option<CfLo
         let mut right = rect.right();
         let mut left = rect.left();
         if across_end > c.col {
-            right = geo.x(sh, across_end + 1);
+            right = geo.x_end(sh, across_end);
         }
         if matches!(halign, HAlign::Left | HAlign::Center | HAlign::Justify) {
             let mut cc = c.col + 1;
             while right - rect.left() < w + 2.0 * pad && cc < MAX_COLS && empty_ok(CellRef::new(c.row, cc)) && cc <= c1 + 20 {
-                right = geo.x(sh, cc + 1);
+                right = geo.x_end(sh, cc);
                 cc += 1;
             }
         }
@@ -478,9 +480,11 @@ fn paint_cell(q: &QuadrantPaint<'_>, painted: &(CellRef, Rect, Look, Option<CfLo
             let extra_r = Rect::from_min_max(pos2(rect.right() - 1.0, inner.top()), inner.max);
             if extra_l.width() > 0.0 {
                 p.rect_filled(extra_l, 0.0, t.grid_bg);
+                paint_active_row(q, Some(extra_l));
             }
             if extra_r.width() > 0.0 {
                 p.rect_filled(extra_r, 0.0, t.grid_bg);
+                paint_active_row(q, Some(extra_r));
             }
         }
     }

crates/ui-egui/src/grid/show.rs

@@ -20,7 +20,7 @@ pub fn show(app: &mut SheetApp, ui: &mut egui::Ui) {
     let available = ui.available_rect_before_wrap();
     // A right-to-left sheet has its vertical scrollbar on the left.
     let rtl = app.session.active().and_then(|d| d.wb.active()).is_some_and(|s| s.right_to_left);
-    let bar = 14.0_f32.min(available.width());
+    let bar = vertical_bar_width(app, available);
     let rect = if rtl {
         Rect::from_min_max(pos2(available.left() + bar, available.top()), available.max)
     } else {
@@ -213,6 +213,12 @@ pub fn show(app: &mut SheetApp, ui: &mut egui::Ui) {
     update_clipboard_repaint(app, ui, now);
 }
 
+/// The vertical scroll bar's width: none when the workbook hides it (File › Options ›
+/// Display options for this workbook), and the grid takes its room.
+fn vertical_bar_width(app: &SheetApp, available: Rect) -> f32 {
+    if app.session.active().is_none_or(|d| d.wb.view.show_vertical_scroll) { 14.0_f32.min(available.width()) } else { 0.0 }
+}
+
 fn vertical_scroll_track(available: Rect, grid: Rect, rtl: bool) -> (f32, f32) {
     if rtl { (available.left(), grid.left()) } else { (grid.right(), available.right()) }
 }
@@ -404,7 +410,19 @@ fn paint_panes(input: PanesInput<'_>, cf: &mut CfCache) -> Vec<PaneQuad> {
             continue;
         }
         let p = painter.with_clip_rect(*clip);
-        paint_quadrant(QuadrantPaint { painter: &p, geo, workbook: wb, sheet_index: si, sheet: sh, rows: *rows, cols: *cols, cf, tokens: t });
+        let active_row = app.ui.highlight_active_row.then_some(sel.active.row);
+        paint_quadrant(QuadrantPaint {
+            painter: &p,
+            geo,
+            workbook: wb,
+            sheet_index: si,
+            sheet: sh,
+            rows: *rows,
+            cols: *cols,
+            cf,
+            tokens: t,
+            active_row,
+        });
         paint_selection(SelectionPaintInput { painter: &p, geo, sheet: sh, selection: sel, outline, tokens: t, app, rows: *rows, cols: *cols });
     }
     // Freeze lines.
@@ -420,6 +438,10 @@ fn paint_panes(input: PanesInput<'_>, cf: &mut CfCache) -> Vec<PaneQuad> {
 /// The worksheet is painted virtually, so it needs its own scrollbar rather than a
 /// ScrollArea containing all million rows. Keep the scroll extent stable during a drag.
 fn vertical_scrollbar(app: &mut SheetApp, ui: &mut egui::Ui, sh: &Sheet, geo: &Geo, track_x: (f32, f32), limit: f32, t: &Tokens) {
+    // A workbook that hides its vertical scroll bar leaves it no width.
+    if track_x.1 <= track_x.0 {
+        return;
+    }
     let track = Rect::from_min_max(pos2(track_x.0, geo.cells.top() + geo.frozen_h), pos2(track_x.1, geo.cells.bottom()));
     if track.height() <= 0.0 || track.width() <= 0.0 {
         return;

crates/ui-egui/src/i18n/cs.rs

@@ -335,6 +335,16 @@ pub(super) fn translate(text: &str) -> Option<&'static str> {
         "Options|General" => "Obecné",
         "Options|Save" => "Uložit",
         "Show formula bar" => "Zobrazit řádek vzorců",
+        "Highlight the active cell's row" => "Zvýraznit řádek aktivní buňky",
+        "Display options for this workbook" => "Možnosti zobrazení pro tento sešit",
+        "Show horizontal scroll bar" => "Zobrazit vodorovný posuvník",
+        "Show vertical scroll bar" => "Zobrazit svislý posuvník",
+        "Show sheet tabs" => "Zobrazit karty listů",
+        "Edit Hyperlink…" => "Upravit hypertextový odkaz…",
+        "Edit Hyperlink" => "Upravit hypertextový odkaz",
+        "Open Hyperlink" => "Otevřít hypertextový odkaz",
+        "Remove Hyperlink" => "Odebrat hypertextový odkaz",
+        "Resize formula bar" => "Změnit velikost řádku vzorců",
         "Enable AutoComplete for cell values" => "Povolit automatické dokončování hodnot buněk",
         "Save .xlsx workbooks automatically after every change" => "Automaticky ukládat sešity .xlsx po každé změně",
         "Workbook calculation" => "Výpočet sešitu",

crates/ui-egui/src/i18n/de.rs

@@ -350,6 +350,16 @@ pub(super) fn translate(text: &str) -> Option<&'static str> {
         "Options|General" => "Allgemein",
         "Options|Save" => "Speichern",
         "Show formula bar" => "Bearbeitungsleiste anzeigen",
+        "Highlight the active cell's row" => "Zeile der aktiven Zelle hervorheben",
+        "Display options for this workbook" => "Optionen für die Anzeige dieser Arbeitsmappe",
+        "Show horizontal scroll bar" => "Horizontale Bildlaufleiste anzeigen",
+        "Show vertical scroll bar" => "Vertikale Bildlaufleiste anzeigen",
+        "Show sheet tabs" => "Blattregisterkarten anzeigen",
+        "Edit Hyperlink…" => "Link bearbeiten…",
+        "Edit Hyperlink" => "Link bearbeiten",
+        "Open Hyperlink" => "Link öffnen",
+        "Remove Hyperlink" => "Link entfernen",
+        "Resize formula bar" => "Größe der Bearbeitungsleiste ändern",
         "Enable AutoComplete for cell values" => "AutoVervollständigen für Zellwerte aktivieren",
         "Save .xlsx workbooks automatically after every change" => ".xlsx-Arbeitsmappen nach jeder Änderung automatisch speichern",
         "Workbook calculation" => "Arbeitsmappenberechnung",

crates/ui-egui/src/i18n/es.rs

@@ -337,6 +337,16 @@ pub(super) fn translate(text: &str) -> Option<&'static str> {
         "Options|General" => "General",
         "Options|Save" => "Guardar",
         "Show formula bar" => "Mostrar barra de fórmulas",
+        "Highlight the active cell's row" => "Resaltar la fila de la celda activa",
+        "Display options for this workbook" => "Opciones de presentación para este libro",
+        "Show horizontal scroll bar" => "Mostrar barra de desplazamiento horizontal",
+        "Show vertical scroll bar" => "Mostrar barra de desplazamiento vertical",
+        "Show sheet tabs" => "Mostrar pestañas de hojas",
+        "Edit Hyperlink…" => "Modificar hipervínculo…",
+        "Edit Hyperlink" => "Modificar hipervínculo",
+        "Open Hyperlink" => "Abrir hipervínculo",
+        "Remove Hyperlink" => "Quitar hipervínculo",
+        "Resize formula bar" => "Cambiar el tamaño de la barra de fórmulas",
         "Enable AutoComplete for cell values" => "Habilitar Autocompletar para valores de celda",
         "Save .xlsx workbooks automatically after every change" => "Guardar automáticamente los libros .xlsx tras cada cambio",
         "Workbook calculation" => "Cálculo del libro",

crates/ui-egui/src/i18n/it.rs

@@ -410,6 +410,7 @@ pub(super) fn translate(text: &str) -> Option<&'static str> {
         "Options|Save" => "Salvataggio",
         "Options|Editing" => "Modifica",
         "Show formula bar" => "Mostra barra della formula",
+        "Highlight the active cell's row" => "Evidenzia la riga della cella attiva",
         "Enable AutoComplete for cell values" => "Abilita Completamento automatico per i valori delle celle",
         "Save .xlsx workbooks automatically after every change" => "Salva automaticamente le cartelle di lavoro .xlsx dopo ogni modifica",
         "Workbook calculation" => "Calcolo della cartella di lavoro",

crates/ui-egui/src/i18n/ko.rs

@@ -426,6 +426,16 @@ pub(super) fn translate(text: &str) -> Option<&'static str> {
         "Options|General" => "일반",
         "Options|Save" => "저장",
         "Show formula bar" => "수식 입력줄 표시",
+        "Highlight the active cell's row" => "활성 셀의 행 강조 표시",
+        "Display options for this workbook" => "이 통합 문서의 표시 옵션",
+        "Show horizontal scroll bar" => "가로 스크롤 막대 표시",
+        "Show vertical scroll bar" => "세로 스크롤 막대 표시",
+        "Show sheet tabs" => "시트 탭 표시",
+        "Edit Hyperlink…" => "하이퍼링크 편집…",
+        "Edit Hyperlink" => "하이퍼링크 편집",
+        "Open Hyperlink" => "하이퍼링크 열기",
+        "Remove Hyperlink" => "하이퍼링크 제거",
+        "Resize formula bar" => "수식 입력줄 크기 조정",
         "Enable AutoComplete for cell values" => "셀 값에 자동 완성 사용",
         "Save .xlsx workbooks automatically after every change" => "변경할 때마다 .xlsx 통합 문서를 자동으로 저장",
         "Workbook calculation" => "통합 문서 계산",

crates/ui-egui/src/i18n/pt.rs

@@ -416,6 +416,16 @@ pub(super) fn translate(text: &str) -> Option<&'static str> {
         "Options|General" => "Geral",
         "Options|Save" => "Salvar",
         "Show formula bar" => "Mostrar barra de fórmulas",
+        "Highlight the active cell's row" => "Realçar a linha da célula ativa",
+        "Display options for this workbook" => "Opções de exibição para esta pasta de trabalho",
+        "Show horizontal scroll bar" => "Mostrar barra de rolagem horizontal",
+        "Show vertical scroll bar" => "Mostrar barra de rolagem vertical",
+        "Show sheet tabs" => "Mostrar guias de planilhas",
+        "Edit Hyperlink…" => "Editar hiperlink…",
+        "Edit Hyperlink" => "Editar hiperlink",
+        "Open Hyperlink" => "Abrir hiperlink",
+        "Remove Hyperlink" => "Remover hiperlink",
+        "Resize formula bar" => "Redimensionar a barra de fórmulas",
         "Enable AutoComplete for cell values" => "Habilitar AutoConclusão para valores de célula",
         "Save .xlsx workbooks automatically after every change" => "Salvar pastas de trabalho .xlsx automaticamente após cada alteração",
         "Workbook calculation" => "Cálculo da pasta de trabalho",

crates/ui-egui/src/i18n/ru.rs

@@ -426,6 +426,16 @@ pub(super) fn translate(text: &str) -> Option<&'static str> {
         "Options|General" => "Общие",
         "Options|Save" => "Сохранение",
         "Show formula bar" => "Показывать строку формул",
+        "Highlight the active cell's row" => "Выделять строку активной ячейки",
+        "Display options for this workbook" => "Параметры отображения для этой книги",
+        "Show horizontal scroll bar" => "Показывать горизонтальную полосу прокрутки",
+        "Show vertical scroll bar" => "Показывать вертикальную полосу прокрутки",
+        "Show sheet tabs" => "Показывать ярлычки листов",
+        "Edit Hyperlink…" => "Изменить гиперссылку…",
+        "Edit Hyperlink" => "Изменить гиперссылку",
+        "Open Hyperlink" => "Открыть гиперссылку",
+        "Remove Hyperlink" => "Удалить гиперссылку",
+        "Resize formula bar" => "Изменить размер строки формул",
         "Enable AutoComplete for cell values" => "Включить автозавершение значений ячеек",
         "Save .xlsx workbooks automatically after every change" => "Автоматически сохранять книги .xlsx после каждого изменения",
         "Workbook calculation" => "Вычисления в книге",

crates/ui-egui/src/i18n/zh.rs

@@ -418,6 +418,16 @@ pub(super) fn translate(text: &str) -> Option<&'static str> {
         "Options|General" => "常规",
         "Options|Save" => "保存",
         "Show formula bar" => "显示编辑栏",
+        "Highlight the active cell's row" => "突出显示活动单元格所在行",
+        "Display options for this workbook" => "此工作簿的显示选项",
+        "Show horizontal scroll bar" => "显示水平滚动条",
+        "Show vertical scroll bar" => "显示垂直滚动条",
+        "Show sheet tabs" => "显示工作表标签",
+        "Edit Hyperlink…" => "编辑超链接…",
+        "Edit Hyperlink" => "编辑超链接",
+        "Open Hyperlink" => "打开超链接",
+        "Remove Hyperlink" => "删除超链接",
+        "Resize formula bar" => "调整编辑栏大小",
         "Enable AutoComplete for cell values" => "为单元格值启用记忆式键入",
         "Save .xlsx workbooks automatically after every change" => "每次更改后自动保存 .xlsx 工作簿",
         "Workbook calculation" => "工作簿计算",

crates/ui-egui/src/keymap.rs

@@ -115,6 +115,8 @@ fn lookup_number_formats(ctx: LookupContext) -> Option<Shortcut> {
         Num7 if ctrl && s => borders("outside"),
         Minus if ctrl && s => borders("none"),
         Num8 if ctrl && s => run("selection.currentRegion"),
+        // Ctrl+. (Control on a Mac too): Next Corner of Selection.
+        Period if ctrl && !s => run("selection.nextCorner"),
         Semicolon if ctrl && s => Shortcut::Time,
         Quote if ctrl && s => Shortcut::ValueAbove,
         Quote if ctrl => Shortcut::FormulaAbove,

crates/ui-egui/src/keytips/keytip_table.rs

@@ -48,6 +48,13 @@ pub fn is_group_level(seq: &str) -> bool {
     matches!(lookup(seq), Some(Entry::Continue)) || (lookup(seq).is_none() && has_deeper(seq))
 }
 
+/// False under a legacy Excel 2003 menu letter that has no ribbon tab (Alt+I, D, V, T): Excel
+/// paints no badges for those, so the ribbon stays as it is while the sequence is typed.
+pub fn paints_badges(prefix: &str) -> bool {
+    let Some(root) = prefix.get(..1) else { return true };
+    SEQUENCES.iter().any(|(seq, entry)| matches!(entry, Entry::Tab(_)) && seq.starts_with(root))
+}
+
 fn matches_target(action: &Action, target: &str) -> bool {
     match action {
         Action::Command(id) | Action::CommandWith(id, _) | Action::Pending(id) | Action::Control(id) => *id == target,
@@ -214,6 +221,22 @@ mod tests {
         assert!(!has_deeper("X"));
     }
 
+    #[test]
+    fn legacy_menu_letters_finish_without_badges() {
+        assert_eq!(lookup("IR"), Some(Entry::Finish(Action::Command("home.insertRows"))));
+        assert_eq!(lookup("DS"), Some(Entry::Finish(Action::Dialog("sort"))));
+        assert_eq!(lookup("EAA"), Some(Entry::Finish(Action::Command("edit.clearAll"))));
+        for root in ["I", "D", "V", "T"] {
+            assert!(is_group_level(root), "{root} waits for the menu letter");
+            assert!(!paints_badges(root), "{root} has no tab, so no badges");
+        }
+        assert!(paints_badges(""), "tab badges");
+        assert!(paints_badges("HO"));
+        assert!(paints_badges("J"), "the Draw tab's two-letter unit");
+        assert!(paints_badges("E"), "E and O stay aliases of Home");
+        assert_eq!(sequences_for("home.insertRows"), vec!["HIR", "IR"], "the ribbon sequence stays first");
+    }
+
     #[test]
     fn group_extension_paints_only_continue_levels() {
         assert_eq!(group_extension("H", &["dialog:pasteSpecial"]), vec!["HV"]);

crates/ui-egui/src/keytips/keytip_table/generated.rs

@@ -372,5 +372,48 @@ pub const SEQUENCES: &[(&str, Entry)] = &[
     ("FN", Entry::Finish(Action::Command("file.new"))),    // Excel: New page; New page
     ("FO", Entry::Finish(Action::Command("file.open"))),   // Excel: Open page; fires immediately in Excel; deeper aliases dropped as unreachable
     ("FP", Entry::Finish(Action::Command("file.print"))),  // Excel: Print page; containment(Print)
-    ("Q", Entry::Finish(Action::Pending("ui.search"))),    // pending; Excel: Search / Tell Me; Alt+Q search box does not exist yet (issue #49)
+    ("IR", Entry::Finish(Action::Command("home.insertRows"))), // Excel: Insert > Rows; Legacy Excel 2003 menu path (#941).
+    ("IC", Entry::Finish(Action::Command("home.insertColumns"))), // Excel: Insert > Columns; Legacy Excel 2003 menu path (#941).
+    ("IE", Entry::Finish(Action::Dialog("insertCells"))),  // Excel: Insert > Cells; Legacy Excel 2003 menu path (#941).
+    ("IW", Entry::Finish(Action::Command("home.insertSheet"))), // Excel: Insert > Worksheet; Legacy Excel 2003 menu path (#941).
+    ("IF", Entry::Finish(Action::Dialog("insertFunction"))), // Excel: Insert > Function; Legacy Excel 2003 menu path (#941).
+    ("IND", Entry::Finish(Action::Dialog("defineName"))),  // Excel: Insert > Name > Define; Legacy Excel 2003 menu path (#941).
+    ("IS", Entry::Finish(Action::Control("insert.symbol"))), // Excel: Insert > Symbol; Legacy Excel 2003 menu path (#941).
+    ("ED", Entry::Finish(Action::Dialog("deleteCells"))),  // Excel: Edit > Delete; Legacy Excel 2003 menu path (#941).
+    ("EM", Entry::Finish(Action::Dialog("moveSheet"))),    // Excel: Edit > Move or Copy Sheet; Legacy Excel 2003 menu path (#941).
+    ("EL", Entry::Finish(Action::Command("home.deleteSheet"))), // Excel: Edit > Delete Sheet; Legacy Excel 2003 menu path (#941).
+    ("EAA", Entry::Finish(Action::Command("edit.clearAll"))), // Excel: Edit > Clear > All; Legacy Excel 2003 menu path (#941).
+    ("EAC", Entry::Finish(Action::Command("edit.clearContents"))), // Excel: Edit > Clear > Contents; Legacy Excel 2003 menu path (#941).
+    ("EAM", Entry::Finish(Action::Command("edit.clearComments"))), // Excel: Edit > Clear > Comments; Legacy Excel 2003 menu path (#941).
+    ("EF", Entry::Finish(Action::Dialog("find"))),         // Excel: Edit > Find; Legacy Excel 2003 menu path (#941).
+    ("EG", Entry::Finish(Action::Dialog("goTo"))),         // Excel: Edit > Go To; Legacy Excel 2003 menu path (#941).
+    ("ORA", Entry::Finish(Action::Command("home.autofitRowHeight"))), // Excel: Format > Row > AutoFit; Legacy Excel 2003 menu path (#941).
+    ("ORE", Entry::Finish(Action::Dialog("rowHeight"))),   // Excel: Format > Row > Height; Legacy Excel 2003 menu path (#941).
+    ("ORH", Entry::Finish(Action::Command("home.hideRows"))), // Excel: Format > Row > Hide; Legacy Excel 2003 menu path (#941).
+    ("ORU", Entry::Finish(Action::Command("home.unhideRows"))), // Excel: Format > Row > Unhide; Legacy Excel 2003 menu path (#941).
+    ("OCW", Entry::Finish(Action::Dialog("columnWidth"))), // Excel: Format > Column > Width; Legacy Excel 2003 menu path (#941).
+    ("OCH", Entry::Finish(Action::Command("home.hideColumns"))), // Excel: Format > Column > Hide; Legacy Excel 2003 menu path (#941).
+    ("OCU", Entry::Finish(Action::Command("home.unhideColumns"))), // Excel: Format > Column > Unhide; Legacy Excel 2003 menu path (#941).
+    ("OHR", Entry::Finish(Action::Dialog("renameSheet"))), // Excel: Format > Sheet > Rename; Legacy Excel 2003 menu path (#941).
+    ("OHH", Entry::Finish(Action::Command("sheet.hide"))), // Excel: Format > Sheet > Hide; Legacy Excel 2003 menu path (#941).
+    ("OHU", Entry::Finish(Action::Command("sheet.unhide"))), // Excel: Format > Sheet > Unhide; Legacy Excel 2003 menu path (#941).
+    ("OE", Entry::Finish(Action::Command("home.formatCells"))), // Excel: Format > Cells; Legacy Excel 2003 menu path (#941).
+    ("OD", Entry::Finish(Action::Command("home.conditionalFormat"))), // Excel: Format > Conditional Formatting; Legacy Excel 2003 menu path (#941).
+    ("DFF", Entry::Finish(Action::Command("data.filter"))), // Excel: Data > Filter > AutoFilter; Legacy Excel 2003 menu path (#941).
+    ("DS", Entry::Finish(Action::Dialog("sort"))),         // Excel: Data > Sort; Legacy Excel 2003 menu path (#941).
+    ("DGG", Entry::Finish(Action::Command("data.group"))), // Excel: Data > Group and Outline > Group; Legacy Excel 2003 menu path (#941).
+    ("DGU", Entry::Finish(Action::Command("data.ungroup"))), // Excel: Data > Group and Outline > Ungroup; Legacy Excel 2003 menu path (#941).
+    ("DGS", Entry::Finish(Action::Command("data.showDetail"))), // Excel: Data > Group and Outline > Show Detail; Legacy Excel 2003 menu path (#941).
+    ("DGH", Entry::Finish(Action::Command("data.hideDetail"))), // Excel: Data > Group and Outline > Hide Detail; Legacy Excel 2003 menu path (#941).
+    ("DL", Entry::Finish(Action::Command("data.validation"))), // Excel: Data > Validation; Legacy Excel 2003 menu path (#941).
+    ("DT", Entry::Finish(Action::Command("data.dataTable"))), // Excel: Data > Table (what-if data table); Legacy Excel 2003 menu path (#941).
+    ("VN", Entry::Finish(Action::Command("view.normal"))), // Excel: View > Normal; Legacy Excel 2003 menu path (#941).
+    ("VP", Entry::Finish(Action::Command("view.pageBreakPreview"))), // Excel: View > Page Break Preview; Legacy Excel 2003 menu path (#941).
+    ("VZ", Entry::Finish(Action::Dialog("zoom"))),         // Excel: View > Zoom; Legacy Excel 2003 menu path (#941).
+    ("TO", Entry::Finish(Action::Dialog("options"))),      // Excel: Tools > Options; Legacy Excel 2003 menu path (#941).
+    ("TUA", Entry::Finish(Action::Command("formulas.removeArrows"))), // Excel: Tools > Formula Auditing > Remove All Arrows; Legacy Excel 2003 menu path (#941).
+    ("TUD", Entry::Finish(Action::Command("formulas.traceDependents"))), // Excel: Tools > Formula Auditing > Trace Dependents; Legacy Excel 2003 menu path (#941).
+    ("TUT", Entry::Finish(Action::Command("formulas.tracePrecedents"))), // Excel: Tools > Formula Auditing > Trace Precedents; Legacy Excel 2003 menu path (#941).
+    ("FU", Entry::Finish(Action::Dialog("pageSetup"))),                  // Excel: File > Page Setup; Legacy Excel 2003 menu path (#941).
+    ("Q", Entry::Finish(Action::Pending("ui.search"))), // pending; Excel: Search / Tell Me; Alt+Q search box does not exist yet (issue #49)
 ];

crates/ui-egui/src/keytips/keytips.json

@@ -2582,6 +2582,307 @@
    "excel": "Print page",
    "note": "containment(Print)"
   },
+  {
+   "seq": "IR",
+   "kind": "command",
+   "target": "home.insertRows",
+   "excel": "Insert > Rows",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "IC",
+   "kind": "command",
+   "target": "home.insertColumns",
+   "excel": "Insert > Columns",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "IE",
+   "kind": "dialog",
+   "target": "insertCells",
+   "excel": "Insert > Cells",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "IW",
+   "kind": "command",
+   "target": "home.insertSheet",
+   "excel": "Insert > Worksheet",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "IF",
+   "kind": "dialog",
+   "target": "insertFunction",
+   "excel": "Insert > Function",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "IND",
+   "kind": "dialog",
+   "target": "defineName",
+   "excel": "Insert > Name > Define",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "IS",
+   "kind": "control",
+   "target": "insert.symbol",
+   "excel": "Insert > Symbol",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "ED",
+   "kind": "dialog",
+   "target": "deleteCells",
+   "excel": "Edit > Delete",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "EM",
+   "kind": "dialog",
+   "target": "moveSheet",
+   "excel": "Edit > Move or Copy Sheet",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "EL",
+   "kind": "command",
+   "target": "home.deleteSheet",
+   "excel": "Edit > Delete Sheet",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "EAA",
+   "kind": "command",
+   "target": "edit.clearAll",
+   "excel": "Edit > Clear > All",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "EAC",
+   "kind": "command",
+   "target": "edit.clearContents",
+   "excel": "Edit > Clear > Contents",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "EAM",
+   "kind": "command",
+   "target": "edit.clearComments",
+   "excel": "Edit > Clear > Comments",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "EF",
+   "kind": "dialog",
+   "target": "find",
+   "excel": "Edit > Find",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "EG",
+   "kind": "dialog",
+   "target": "goTo",
+   "excel": "Edit > Go To",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "ORA",
+   "kind": "command",
+   "target": "home.autofitRowHeight",
+   "excel": "Format > Row > AutoFit",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "ORE",
+   "kind": "dialog",
+   "target": "rowHeight",
+   "excel": "Format > Row > Height",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "ORH",
+   "kind": "command",
+   "target": "home.hideRows",
+   "excel": "Format > Row > Hide",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "ORU",
+   "kind": "command",
+   "target": "home.unhideRows",
+   "excel": "Format > Row > Unhide",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "OCW",
+   "kind": "dialog",
+   "target": "columnWidth",
+   "excel": "Format > Column > Width",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "OCH",
+   "kind": "command",
+   "target": "home.hideColumns",
+   "excel": "Format > Column > Hide",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "OCU",
+   "kind": "command",
+   "target": "home.unhideColumns",
+   "excel": "Format > Column > Unhide",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "OHR",
+   "kind": "dialog",
+   "target": "renameSheet",
+   "excel": "Format > Sheet > Rename",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "OHH",
+   "kind": "command",
+   "target": "sheet.hide",
+   "excel": "Format > Sheet > Hide",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "OHU",
+   "kind": "command",
+   "target": "sheet.unhide",
+   "excel": "Format > Sheet > Unhide",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "OE",
+   "kind": "command",
+   "target": "home.formatCells",
+   "excel": "Format > Cells",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "OD",
+   "kind": "command",
+   "target": "home.conditionalFormat",
+   "excel": "Format > Conditional Formatting",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "DFF",
+   "kind": "command",
+   "target": "data.filter",
+   "excel": "Data > Filter > AutoFilter",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "DS",
+   "kind": "dialog",
+   "target": "sort",
+   "excel": "Data > Sort",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "DGG",
+   "kind": "command",
+   "target": "data.group",
+   "excel": "Data > Group and Outline > Group",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "DGU",
+   "kind": "command",
+   "target": "data.ungroup",
+   "excel": "Data > Group and Outline > Ungroup",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "DGS",
+   "kind": "command",
+   "target": "data.showDetail",
+   "excel": "Data > Group and Outline > Show Detail",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "DGH",
+   "kind": "command",
+   "target": "data.hideDetail",
+   "excel": "Data > Group and Outline > Hide Detail",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "DL",
+   "kind": "command",
+   "target": "data.validation",
+   "excel": "Data > Validation",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "DT",
+   "kind": "command",
+   "target": "data.dataTable",
+   "excel": "Data > Table (what-if data table)",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "VN",
+   "kind": "command",
+   "target": "view.normal",
+   "excel": "View > Normal",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "VP",
+   "kind": "command",
+   "target": "view.pageBreakPreview",
+   "excel": "View > Page Break Preview",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "VZ",
+   "kind": "dialog",
+   "target": "zoom",
+   "excel": "View > Zoom",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "TO",
+   "kind": "dialog",
+   "target": "options",
+   "excel": "Tools > Options",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "TUA",
+   "kind": "command",
+   "target": "formulas.removeArrows",
+   "excel": "Tools > Formula Auditing > Remove All Arrows",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "TUD",
+   "kind": "command",
+   "target": "formulas.traceDependents",
+   "excel": "Tools > Formula Auditing > Trace Dependents",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "TUT",
+   "kind": "command",
+   "target": "formulas.tracePrecedents",
+   "excel": "Tools > Formula Auditing > Trace Precedents",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
+  {
+   "seq": "FU",
+   "kind": "dialog",
+   "target": "pageSetup",
+   "excel": "File > Page Setup",
+   "note": "Legacy Excel 2003 menu path (#941)."
+  },
   {
    "seq": "Q",
    "kind": "command",

crates/ui-egui/src/lib.rs

@@ -88,12 +88,18 @@ pub struct UiState {
     pub ribbon_tab: String,
     pub ribbon_collapsed: bool,
     pub formula_bar_expanded: bool,
+    /// Lines the expanded formula bar shows: the height its bottom edge was last dragged to.
+    /// Expanding it again (the chevron, Ctrl+Shift+U) returns to that height.
+    pub formula_bar_lines: usize,
     pub status_bar: bool,
     /// Motion in the UI: the selection outline glides to a new selection (View ▸ Animations).
     pub animations: bool,
     /// Enable AutoComplete for cell values (File ▸ Options ▸ Editing): typed text is completed
     /// from the one matching entry in the same column.
     pub autocomplete: bool,
+    /// Tint the active cell's whole row (File ▸ Options ▸ General), on every sheet and workbook, so
+    /// the eye keeps its place across a wide table. A preference: nothing goes into the file.
+    pub highlight_active_row: bool,
     /// AutoSave (the title-bar switch): save saved-to-file .xlsx workbooks shortly after every
     /// change. A preference like the rest of this struct — it stays on across restarts (#1901).
     pub autosave: bool,
@@ -102,6 +108,10 @@ pub struct UiState {
     /// [`keytips::Action::Control`], consumed (and cleared) by the control's render site.
     #[serde(skip)]
     pub keytip_invoke: Option<&'static str>,
+    /// A keytip control request for the next frame: its tab was switched to this frame, so its
+    /// control is drawn only then.
+    #[serde(skip)]
+    pub keytip_invoke_next: Option<&'static str>,
     /// Interface language. English by default (so tests and headless renders never depend on the
     /// host's locale); the desktop app starts from [`i18n::Language::system`] when `ui.json` has
     /// no usable language (see [`i18n::saved_language`]). An unknown saved value reads as English
@@ -137,12 +147,15 @@ impl Default for UiState {
             ribbon_tab: "Home".into(),
             ribbon_collapsed: false,
             formula_bar_expanded: false,
+            formula_bar_lines: formula_bar::MAX_LINES,
             status_bar: true,
             animations: true,
             autocomplete: true,
+            highlight_active_row: false,
             autosave: false,
             recent: vec![],
             keytip_invoke: None,
+            keytip_invoke_next: None,
             language: i18n::Language::En,
             interface_scale: 100,
         }

crates/ui-egui/src/macro_editor.rs

@@ -459,10 +459,7 @@ pub fn parse_refs(text: &str) -> Vec<(Option<String>, RangeRef)> {
     text.split(',')
         .filter_map(|part| {
             let part = part.trim();
-            let (sheet, body) = match part.rsplit_once('!') {
-                Some((s, b)) => (Some(s.trim().trim_matches('\'').replace("''", "'")), b),
-                None => (None, part),
-            };
+            let (sheet, body) = gridcraft_engine::core::split_sheet(part);
             RangeRef::parse(&body.replace('$', "")).map(|r| (sheet, r))
         })
         .take(500)
@@ -2399,6 +2396,15 @@ pub fn paint_overlay(p: &egui::Painter, geo: &crate::grid::Geo, sh: &gridcraft_e
 mod tests {
     use super::*;
 
+    #[test]
+    fn example_references_unquote_sheet_names_as_formulas_do() {
+        // #2012: one shared reading of `'Bob''s'!A1` and `'a!b'!A1`.
+        let refs = parse_refs("'Bob''s'!$A$1:$B$2, 'a!b'!C3, D4");
+        let sheets: Vec<Option<String>> = refs.iter().map(|(s, _)| s.clone()).collect();
+        assert_eq!(sheets, [Some("Bob's".to_string()), Some("a!b".to_string()), None]);
+        assert_eq!(refs.iter().map(|(_, r)| r.a1()).collect::<Vec<_>>(), ["A1:B2", "C3", "D4"]);
+    }
+
     #[test]
     fn an_edited_input_keeps_a_shape_a_macro_may_declare() {
         let range = NamedInput { rows: [2, 10], cols: [3, 3], header: true, col_types: vec![ColType::Number; 3], ..NamedInput::default() };

crates/ui-egui/src/paper_view.rs

@@ -162,10 +162,26 @@ pub(crate) fn paint_pages(input: PagePaintInput<'_>, cf: &mut CfCache) -> Vec<gr
         }
         painted += 1;
         let pc = p.with_clip_rect(clip);
-        grid::paint_quadrant(grid::QuadrantPaint { painter: &pc, geo, workbook: wb, sheet_index: si, sheet: sh, rows, cols, cf, tokens: t });
+        let active_row = app.ui.highlight_active_row.then_some(sel.active.row);
+        grid::paint_quadrant(grid::QuadrantPaint {
+            painter: &pc,
+            geo,
+            workbook: wb,
+            sheet_index: si,
+            sheet: sh,
+            rows,
+            cols,
+            cf,
+            tokens: t,
+            active_row,
+        });
         if !pg.is_data_page(i, j) {
             // "Click to add data" pages: faded until something is typed there.
             pc.rect_filled(clip, 0.0, t.grid_bg.gamma_multiply(0.75));
+            // The fade would all but hide the active row's band: it goes on again.
+            if let Some(band) = active_row.and_then(|row| grid::active_row_band(geo, sh, row, rows, cols)) {
+                pc.rect_filled(band, 0.0, t.active_row);
+            }
             let size = (14.0 * geo.z / DISPLAY_SCALE).clamp(8.0, 22.0);
             pc.text(clip.center(), Align2::CENTER_CENTER, tr(app, "Click to add data"), theme::ui_font(size), Color32::from_gray(150));
         }

crates/ui-egui/src/ribbon/controls.rs

@@ -27,7 +27,15 @@ pub(super) fn act(app: &mut SheetApp, id: &str, params: serde_json::Value) {
 
 /// Keytips are painted, not focusable widgets: the grid retains keyboard focus.
 pub(super) fn keytip(app: &SheetApp, ui: &Ui, sequence: &str, at: egui::Pos2) {
-    let Some(rest) = app.keytips.prefix().and_then(|prefix| sequence.strip_prefix(prefix)).filter(|s| !s.is_empty()) else { return };
+    let Some(rest) = app
+        .keytips
+        .prefix()
+        .filter(|prefix| keytip_table::paints_badges(prefix))
+        .and_then(|prefix| sequence.strip_prefix(prefix))
+        .filter(|s| !s.is_empty())
+    else {
+        return;
+    };
     let t = Tokens::get(ui.ctx());
     let painter = ui.ctx().layer_painter(egui::LayerId::new(egui::Order::Tooltip, egui::Id::unique("ribbon_keytips"))).with_clip_rect(ui.clip_rect());
     let text = painter.layout_no_wrap(rest.into(), theme::ui_bold(10.5), t.text);

crates/ui-egui/src/ribbon/home.rs

@@ -622,10 +622,13 @@ fn size_combo(app: &mut SheetApp, ui: &mut Ui, st: &Style) {
     let arrow_rect = Rect::from_min_max(egui::pos2(frame.right() - 16.0, frame.top() + 1.0), egui::pos2(frame.right() - 1.0, frame.bottom() - 1.0));
     let mut field_ui =
         ui.new_child(egui::UiBuilder::new().max_rect(text_rect.shrink2(vec2(6.0, 0.0))).layout(egui::Layout::left_to_right(egui::Align::Center)));
+    // The text edit is `interact_size.y` tall and puts its text at the top of that unless told
+    // otherwise: center it, on the Font name's baseline (#3155).
     let out = egui::TextEdit::singleline(&mut text)
         .id(field)
         .font(theme::ui_font(12.5))
         .frame(egui::Frame::NONE)
+        .align(egui::Align2::LEFT_CENTER)
         .desired_width(text_rect.width() - 12.0)
         .show(&mut field_ui);
     let resp = out.response;

crates/ui-egui/src/ribbon/insert.rs

@@ -213,7 +213,9 @@ pub(super) fn insert(app: &mut SheetApp, ui: &mut Ui) {
     });
     let sym = big_button(ui, Icon::Symbol, "Symbol", "Symbol", true);
     control_keytip(app, ui, &sym, "insert.symbol");
-    egui::Popup::menu(&sym).show(|ui| {
+    // Opened by its key tip too (Alt+I, S): the gallery picks the symbol, nothing is inserted before.
+    let forced = invoke(app, "insert.symbol");
+    egui::Popup::menu(&sym).open_memory(popup_command(forced, sym.clicked())).show(|ui| {
         ui.set_width(260.0);
         ui.horizontal_wrapped(|ui| {
             for ch in [

crates/ui-egui/src/services.rs

@@ -32,6 +32,9 @@ pub struct Services {
     /// gets it from egui's `Event::Paste`). `None` from the host, or no service (web), pastes
     /// GridCraft's own clipboard.
     pub paste_text: Option<Box<dyn FnMut() -> Option<String>>>,
+    /// Read the picture on the system clipboard for the ribbon and menu Paste commands when it
+    /// holds no text (Cmd/Ctrl+V gets it from egui's `Event::PasteImage`).
+    pub paste_image: Option<Box<dyn FnMut() -> Option<image::RgbaImage>>>,
     /// Web: deliver a file to the user (name, bytes).
     pub download: Option<Download>,
     /// Web: start an asynchronous file pick; the bytes arrive later in `inbox`.

crates/ui-egui/src/tabs.rs

@@ -100,29 +100,40 @@ fn tab_split_handle(app: &mut SheetApp, ui: &mut Ui, split: Rect, bar: (f32, f32
 /// Draws the worksheet tab strip: navigation, scroll/reveal, rename/drag/move with optional copy, context menu, new-sheet button, split handle and grid scrollbar.
 pub fn sheet_tabs(app: &mut SheetApp, ui: &mut Ui) {
     let t = Tokens::get(ui.ctx());
+    // Only the controls drawn this frame have a rectangle: a hidden one keeps no stale geometry.
+    app.grid.hscroll = None;
+    app.grid.tab_split = None;
+    // File › Options › Advanced › Display options for this workbook (#3101): with neither the
+    // sheet tabs nor the horizontal scroll bar, the bar isn't there at all.
+    let view = app.session.active().map(|d| d.wb.view).unwrap_or_default();
+    if !view.show_sheet_tabs && !view.show_horizontal_scroll {
+        return;
+    }
     egui::Panel::bottom("sheet_tabs").exact_size(32.0).frame(egui::Frame::NONE.fill(t.tab_bar)).show(ui, |ui| {
         let rect = ui.max_rect();
         ui.painter().line_segment([rect.left_top(), rect.right_top()], Stroke::new(1.0, t.ribbon_border));
         ui.horizontal_centered(|ui| {
             ui.spacing_mut().item_spacing.x = 0.0;
             ui.add_space(8.0);
-            if crate::widgets::icon_button(ui, Icon::Left, t.text_dim, app.ui.language.tr("Previous sheet"), vec2(24.0, 24.0)).clicked() {
-                app.run_or_alert("sheet.previous", json!({}));
+            if view.show_sheet_tabs {
+                if crate::widgets::icon_button(ui, Icon::Left, t.text_dim, app.ui.language.tr("Previous sheet"), vec2(24.0, 24.0)).clicked() {
+                    app.run_or_alert("sheet.previous", json!({}));
+                }
+                if crate::widgets::icon_button(ui, Icon::Right, t.text_dim, app.ui.language.tr("Next sheet"), vec2(24.0, 24.0)).clicked() {
+                    app.run_or_alert("sheet.next", json!({}));
+                }
+                let all = crate::widgets::icon_button(ui, Icon::SheetList, t.text_dim, app.ui.language.tr("All sheets"), vec2(24.0, 24.0));
+                all.widget_info(|| egui::WidgetInfo::labeled(egui::Role::Button, true, app.ui.language.tr("All sheets")));
+                let items = app.session.active().map(|d| navigator_items(&d.wb.sheets)).unwrap_or_default();
+                let active = app.session.active().map(|d| d.wb.active_sheet().to_string()).unwrap_or_default();
+                let rows: Vec<(&str, String)> = items.iter().map(|(i, name)| (i.as_str(), name.clone())).collect();
+                if let crate::ribbon::ComboResult::Picked(i) = crate::ribbon::editable_combo(ui, &all, "sheet_navigator", &active, &rows, false)
+                    && let Ok(i) = i.parse::<usize>()
+                {
+                    activate_sheet(app, i);
+                }
+                ui.add_space(8.0);
             }
-            if crate::widgets::icon_button(ui, Icon::Right, t.text_dim, app.ui.language.tr("Next sheet"), vec2(24.0, 24.0)).clicked() {
-                app.run_or_alert("sheet.next", json!({}));
-            }
-            let all = crate::widgets::icon_button(ui, Icon::SheetList, t.text_dim, app.ui.language.tr("All sheets"), vec2(24.0, 24.0));
-            all.widget_info(|| egui::WidgetInfo::labeled(egui::Role::Button, true, app.ui.language.tr("All sheets")));
-            let items = app.session.active().map(|d| navigator_items(&d.wb.sheets)).unwrap_or_default();
-            let active = app.session.active().map(|d| d.wb.active_sheet().to_string()).unwrap_or_default();
-            let rows: Vec<(&str, String)> = items.iter().map(|(i, name)| (i.as_str(), name.clone())).collect();
-            if let crate::ribbon::ComboResult::Picked(i) = crate::ribbon::editable_combo(ui, &all, "sheet_navigator", &active, &rows, false)
-                && let Ok(i) = i.parse::<usize>()
-            {
-                activate_sheet(app, i);
-            }
-            ui.add_space(8.0);
             let Some(d) = app.session.active() else { return };
             let (bar_left, bar_width) = (ui.cursor().left(), ui.available_width());
             let uid = d.uid;
@@ -143,6 +154,8 @@ pub fn sheet_tabs(app: &mut SheetApp, ui: &mut Ui) {
             // After the handle at the scrollbar's left edge is dragged, the tabs and New sheet
             // take the share it was dragged to.
             let tabs_width = match share {
+                // Without the scroll bar the tabs have the whole bar.
+                _ if !view.show_horizontal_scroll => (bar_width - NEW_SHEET_WIDTH).max(0.0),
                 Some(share) => (bar_width * share - NEW_SHEET_WIDTH).max(0.0),
                 None => (bar_width * 0.6).max(100.0),
             };
@@ -155,154 +168,159 @@ pub fn sheet_tabs(app: &mut SheetApp, ui: &mut Ui) {
                 data.insert_temp(reveal_id, reveal_key);
                 changed
             });
-            ui.allocate_ui_with_layout(vec2(tabs_width, 30.0), egui::Layout::left_to_right(egui::Align::Center), |ui| {
-                // Translate vertical wheel movement into horizontal
-                // worksheet-tab scrolling.
-                let wheel_scroll = if ui.rect_contains_pointer(ui.max_rect()) {
-                    ui.input(|i| {
-                        let d = i.smooth_scroll_delta;
-                        if d.x.abs() > d.y.abs() { d.x } else { d.y }
-                    })
-                } else {
-                    0.0
-                };
+            if view.show_sheet_tabs {
+                ui.allocate_ui_with_layout(vec2(tabs_width, 30.0), egui::Layout::left_to_right(egui::Align::Center), |ui| {
+                    // Translate vertical wheel movement into horizontal
+                    // worksheet-tab scrolling.
+                    let wheel_scroll = if ui.rect_contains_pointer(ui.max_rect()) {
+                        ui.input(|i| {
+                            let d = i.smooth_scroll_delta;
+                            if d.x.abs() > d.y.abs() { d.x } else { d.y }
+                        })
+                    } else {
+                        0.0
+                    };
 
-                egui::ScrollArea::horizontal()
-                    .id_salt("worksheet_tabs_horizontal")
-                    .auto_shrink([true, false])
-                    .min_scrolled_width(0.0)
-                    .scroll_bar_visibility(egui::scroll_area::ScrollBarVisibility::AlwaysHidden)
-                    .show(ui, |ui| {
-                        if wheel_scroll.abs() > 0.0 {
-                            ui.scroll_with_delta(vec2(wheel_scroll, 0.0));
-                        }
-                        ui.horizontal(|ui| {
-                            ui.spacing_mut().item_spacing.x = 0.0;
-                            for (i, name, color, active) in sheets {
-                                let renaming = app.grid.renaming_tab == Some(i);
-                                let font = if active { theme::ui_bold(13.0) } else { theme::ui_font(13.0) };
-                                let tw = ui.painter().layout_no_wrap(name.clone(), font.clone(), t.text).size().x;
-                                let w = (tw + 32.0).max(72.0);
-                                let (r, resp) = ui.allocate_exact_size(vec2(w, 30.0), Sense::click_and_drag());
-                                if active && reveal_active {
-                                    resp.scroll_to_me(None);
-                                }
-                                let r = r.shrink2(vec2(0.0, 1.0));
-                                if active {
-                                    ui.painter().rect_filled(Rect::from_min_max(pos2(r.left(), r.top() - 2.0), r.max), 4.0, t.tab_active);
-                                    ui.painter().rect_stroke(
-                                        Rect::from_min_max(pos2(r.left(), r.top() - 2.0), r.max),
-                                        4.0,
-                                        Stroke::new(1.0, t.ribbon_border),
-                                        StrokeKind::Inside,
-                                    );
-                                } else if resp.hovered() {
-                                    ui.painter().rect_filled(r, 4.0, t.hover);
-                                }
-                                if let Some(c) = color {
-                                    let band = Rect::from_min_size(pos2(r.left() + 6.0, r.bottom() - 4.0), vec2(r.width() - 12.0, 3.0));
-                                    ui.painter().rect_filled(band, 1.0, theme::color32(c));
-                                } else if active {
-                                    let band = Rect::from_center_size(pos2(r.center().x, r.bottom() - 3.0), vec2(tw.min(48.0), 2.5));
-                                    ui.painter().rect_filled(band, 1.0, t.accent);
-                                }
-                                if renaming {
-                                    let mut text = app.grid.rename_text.clone();
-                                    let mut child = ui.new_child(egui::UiBuilder::new().max_rect(r.shrink2(vec2(6.0, 5.0))));
-                                    let ed = child
-                                        .add(egui::TextEdit::singleline(&mut text).font(theme::ui_font(13.0)).desired_width(r.width() - 12.0))
-                                        .accessible_name(app.ui.language.tr("Sheet Name"));
-                                    app.grid.rename_text = text.clone();
-                                    if rename_needs_focus(ed.has_focus(), ed.lost_focus()) {
-                                        ed.request_focus();
+                    egui::ScrollArea::horizontal()
+                        .id_salt("worksheet_tabs_horizontal")
+                        .auto_shrink([true, false])
+                        .min_scrolled_width(0.0)
+                        .scroll_bar_visibility(egui::scroll_area::ScrollBarVisibility::AlwaysHidden)
+                        .show(ui, |ui| {
+                            if wheel_scroll.abs() > 0.0 {
+                                ui.scroll_with_delta(vec2(wheel_scroll, 0.0));
+                            }
+                            ui.horizontal(|ui| {
+                                ui.spacing_mut().item_spacing.x = 0.0;
+                                for (i, name, color, active) in sheets {
+                                    let renaming = app.grid.renaming_tab == Some(i);
+                                    let font = if active { theme::ui_bold(13.0) } else { theme::ui_font(13.0) };
+                                    let tw = ui.painter().layout_no_wrap(name.clone(), font.clone(), t.text).size().x;
+                                    let w = (tw + 32.0).max(72.0);
+                                    let (r, resp) = ui.allocate_exact_size(vec2(w, 30.0), Sense::click_and_drag());
+                                    if active && reveal_active {
+                                        resp.scroll_to_me(None);
                                     }
-                                    if ed.lost_focus() {
-                                        if !ui.input(|i| i.key_pressed(egui::Key::Escape)) && text != name {
-                                            app.run_or_alert("sheet.rename", json!({"sheet": i, "name": text}));
+                                    let r = r.shrink2(vec2(0.0, 1.0));
+                                    if active {
+                                        ui.painter().rect_filled(Rect::from_min_max(pos2(r.left(), r.top() - 2.0), r.max), 4.0, t.tab_active);
+                                        ui.painter().rect_stroke(
+                                            Rect::from_min_max(pos2(r.left(), r.top() - 2.0), r.max),
+                                            4.0,
+                                            Stroke::new(1.0, t.ribbon_border),
+                                            StrokeKind::Inside,
+                                        );
+                                    } else if resp.hovered() {
+                                        ui.painter().rect_filled(r, 4.0, t.hover);
+                                    }
+                                    if let Some(c) = color {
+                                        let band = Rect::from_min_size(pos2(r.left() + 6.0, r.bottom() - 4.0), vec2(r.width() - 12.0, 3.0));
+                                        ui.painter().rect_filled(band, 1.0, theme::color32(c));
+                                    } else if active {
+                                        let band = Rect::from_center_size(pos2(r.center().x, r.bottom() - 3.0), vec2(tw.min(48.0), 2.5));
+                                        ui.painter().rect_filled(band, 1.0, t.accent);
+                                    }
+                                    if renaming {
+                                        let mut text = app.grid.rename_text.clone();
+                                        let mut child = ui.new_child(egui::UiBuilder::new().max_rect(r.shrink2(vec2(6.0, 5.0))));
+                                        let ed = child
+                                            .add(egui::TextEdit::singleline(&mut text).font(theme::ui_font(13.0)).desired_width(r.width() - 12.0))
+                                            .accessible_name(app.ui.language.tr("Sheet Name"));
+                                        app.grid.rename_text = text.clone();
+                                        if rename_needs_focus(ed.has_focus(), ed.lost_focus()) {
+                                            ed.request_focus();
                                         }
-                                        app.grid.renaming_tab = None;
+                                        if ed.lost_focus() {
+                                            if !ui.input(|i| i.key_pressed(egui::Key::Escape)) && text != name {
+                                                app.run_or_alert("sheet.rename", json!({"sheet": i, "name": text}));
+                                            }
+                                            app.grid.renaming_tab = None;
+                                        }
+                                    } else {
+                                        ui.painter().text(r.center(), Align2::CENTER_CENTER, &name, font, if active { t.accent } else { t.text });
                                     }
-                                } else {
-                                    ui.painter().text(r.center(), Align2::CENTER_CENTER, &name, font, if active { t.accent } else { t.text });
-                                }
-                                // A right-click activates the tab too, as in Excel, so the menu's sheet commands (Protect
-                                // Sheet, Select All Sheets) act on the sheet that was clicked rather than the one that was active.
-                                if resp.clicked() || (resp.secondary_clicked() && !active) {
-                                    activate_sheet(app, i);
-                                }
-                                if resp.double_clicked() {
-                                    app.grid.renaming_tab = Some(i);
-                                    app.grid.rename_text = name.clone();
-                                }
-                                // Drag to reorder; with the copy modifier held, drop a copy instead.
-                                let copy = drop_copies_sheet(ui.input(|inp| inp.modifiers), ui.ctx().os() == egui::os::OperatingSystem::Mac);
-                                if resp.dragged() && copy {
-                                    ui.ctx().set_cursor_icon(egui::CursorIcon::Copy);
-                                }
-                                if resp.drag_stopped()
-                                    && let Some(p) = ui.input(|inp| inp.pointer.interact_pos())
-                                {
-                                    let dx = p.x - r.center().x;
-                                    let steps = (dx / w).round() as i64;
-                                    if let Some(params) = tab_drop(i, steps, copy) {
-                                        app.run_or_alert("sheet.move", params);
+                                    // A right-click activates the tab too, as in Excel, so the menu's sheet commands (Protect
+                                    // Sheet, Select All Sheets) act on the sheet that was clicked rather than the one that was active.
+                                    if resp.clicked() || (resp.secondary_clicked() && !active) {
+                                        activate_sheet(app, i);
                                     }
-                                }
-                                resp.context_menu(|ui| {
-                                    ui.set_min_width(180.0);
-                                    if ui.button(app.ui.language.tr("Insert Sheet")).clicked() {
-                                        app.run_or_alert("home.insertSheet", json!({"before": i}));
-                                    }
-                                    if ui.button(app.ui.language.tr("Delete")).clicked() {
-                                        app.run_or_alert("home.deleteSheet", json!({"sheet": i}));
-                                    }
-                                    if ui.button(app.ui.language.tr("Rename")).clicked() {
+                                    if resp.double_clicked() {
                                         app.grid.renaming_tab = Some(i);
                                         app.grid.rename_text = name.clone();
                                     }
-                                    if ui.button(app.ui.language.tr("Move or Copy…")).clicked() {
-                                        app.open_dialog("moveSheet", json!({"sheet": i}));
+                                    // Drag to reorder; with the copy modifier held, drop a copy instead.
+                                    let copy = drop_copies_sheet(ui.input(|inp| inp.modifiers), ui.ctx().os() == egui::os::OperatingSystem::Mac);
+                                    if resp.dragged() && copy {
+                                        ui.ctx().set_cursor_icon(egui::CursorIcon::Copy);
                                     }
-                                    if ui.button(app.ui.language.tr("Duplicate")).clicked() {
-                                        app.run_or_alert("sheet.move", json!({"sheet": i, "to": i + 1, "copy": true}));
+                                    if resp.drag_stopped()
+                                        && let Some(p) = ui.input(|inp| inp.pointer.interact_pos())
+                                    {
+                                        let dx = p.x - r.center().x;
+                                        let steps = (dx / w).round() as i64;
+                                        if let Some(params) = tab_drop(i, steps, copy) {
+                                            app.run_or_alert("sheet.move", params);
+                                        }
                                     }
-                                    ui.menu_button(app.ui.language.tr("Tab Color"), |ui| {
-                                        let colors = app.session.active().map(|d| d.wb.theme.colors).unwrap_or_default();
-                                        if let Some(c) = crate::widgets::color_palette_fixed(ui, &colors, app.ui.language.tr("No Color")) {
-                                            app.run_or_alert("sheet.tabColor", json!({"sheet": i, "color": c}));
+                                    resp.context_menu(|ui| {
+                                        ui.set_min_width(180.0);
+                                        if ui.button(app.ui.language.tr("Insert Sheet")).clicked() {
+                                            app.run_or_alert("home.insertSheet", json!({"before": i}));
+                                        }
+                                        if ui.button(app.ui.language.tr("Delete")).clicked() {
+                                            app.run_or_alert("home.deleteSheet", json!({"sheet": i}));
+                                        }
+                                        if ui.button(app.ui.language.tr("Rename")).clicked() {
+                                            app.grid.renaming_tab = Some(i);
+                                            app.grid.rename_text = name.clone();
+                                        }
+                                        if ui.button(app.ui.language.tr("Move or Copy…")).clicked() {
+                                            app.open_dialog("moveSheet", json!({"sheet": i}));
+                                        }
+                                        if ui.button(app.ui.language.tr("Duplicate")).clicked() {
+                                            app.run_or_alert("sheet.move", json!({"sheet": i, "to": i + 1, "copy": true}));
+                                        }
+                                        ui.menu_button(app.ui.language.tr("Tab Color"), |ui| {
+                                            let colors = app.session.active().map(|d| d.wb.theme.colors).unwrap_or_default();
+                                            if let Some(c) = crate::widgets::color_palette_fixed(ui, &colors, app.ui.language.tr("No Color")) {
+                                                app.run_or_alert("sheet.tabColor", json!({"sheet": i, "color": c}));
+                                                ui.close();
+                                            }
+                                        });
+                                        ui.separator();
+                                        if ui.button(app.ui.language.tr("Hide")).clicked() {
+                                            app.run_or_alert("sheet.hide", json!({"sheet": i}));
+                                        }
+                                        if ui.button(app.ui.language.tr("Unhide…")).clicked() {
+                                            app.run_or_alert("sheet.unhide", json!({}));
+                                        }
+                                        ui.separator();
+                                        let protected = app.active_sheet_protected();
+                                        if ui
+                                            .button(if protected {
+                                                app.ui.language.tr("Unprotect Sheet…")
+                                            } else {
+                                                app.ui.language.tr("Protect Sheet…")
+                                            })
+                                            .clicked()
+                                        {
+                                            app.open_dialog("protectSheet", json!({}));
+                                        }
+                                        if ui.button(app.ui.language.tr("Select All Sheets")).clicked() {
                                             ui.close();
                                         }
                                     });
-                                    ui.separator();
-                                    if ui.button(app.ui.language.tr("Hide")).clicked() {
-                                        app.run_or_alert("sheet.hide", json!({"sheet": i}));
-                                    }
-                                    if ui.button(app.ui.language.tr("Unhide…")).clicked() {
-                                        app.run_or_alert("sheet.unhide", json!({}));
-                                    }
-                                    ui.separator();
-                                    let protected = app.active_sheet_protected();
-                                    if ui
-                                        .button(if protected {
-                                            app.ui.language.tr("Unprotect Sheet…")
-                                        } else {
-                                            app.ui.language.tr("Protect Sheet…")
-                                        })
-                                        .clicked()
-                                    {
-                                        app.open_dialog("protectSheet", json!({}));
-                                    }
-                                    if ui.button(app.ui.language.tr("Select All Sheets")).clicked() {
-                                        ui.close();
-                                    }
-                                });
-                            }
+                                }
+                            });
                         });
-                    });
-            });
-            ui.add_space(6.0);
-            if crate::widgets::icon_button(ui, Icon::Plus, t.text_dim, app.ui.language.tr("New sheet (⇧F11)"), vec2(26.0, 26.0)).clicked() {
-                app.run_or_alert("home.insertSheet", json!({}));
+                });
+                ui.add_space(6.0);
+                if crate::widgets::icon_button(ui, Icon::Plus, t.text_dim, app.ui.language.tr("New sheet (⇧F11)"), vec2(26.0, 26.0)).clicked() {
+                    app.run_or_alert("home.insertSheet", json!({}));
+                }
+            }
+            if !view.show_horizontal_scroll {
+                return;
             }
             // The track ends where the grid does, so it stops under the vertical scrollbar.
             let avail = ui.available_rect_before_wrap();
@@ -312,8 +330,14 @@ pub fn sheet_tabs(app: &mut SheetApp, ui: &mut Ui) {
             let split_left =
                 share.map_or(avail.left(), |share| (bar_left + bar_width * share).min(right - SPLIT_WIDTH - MIN_TRACK).max(avail.left()));
             let split = Rect::from_min_max(pos2(split_left, avail.top()), pos2(split_left + SPLIT_WIDTH, avail.bottom()));
-            tab_split_handle(app, ui, split, (bar_left, bar_width), right, uid, &t);
-            let track = Rect::from_min_max(pos2(split.right(), avail.center().y - 7.0), pos2(right, avail.center().y + 7.0));
+            // Without sheet tabs there is nothing to split: the scroll bar takes the bar.
+            let track_left = if view.show_sheet_tabs {
+                tab_split_handle(app, ui, split, (bar_left, bar_width), right, uid, &t);
+                split.right()
+            } else {
+                avail.left()
+            };
+            let track = Rect::from_min_max(pos2(track_left, avail.center().y - 7.0), pos2(right, avail.center().y + 7.0));
             crate::grid::horizontal_scrollbar(app, ui, track, &t);
         });
     });

crates/ui-egui/src/theme.rs

@@ -63,6 +63,8 @@ pub struct Tokens {
     pub header_sel_text: Color32,
     pub header_all_bg: Color32,
     pub sel_fill: Color32,
+    /// The tint over the active cell's row (File ▸ Options ▸ General).
+    pub active_row: Color32,
     pub sel_border: Color32,
     pub input_bg: Color32,
     pub input_border: Color32,
@@ -217,6 +219,7 @@ impl Tokens {
             header_sel_text: pick(dark, Color32::from_rgb(0x0B, 0x5E, 0x31), Color32::from_rgb(0x6F, 0xD3, 0x9A)),
             header_all_bg: pick(dark, Color32::from_rgb(0xC8, 0xE6, 0xD3), Color32::from_rgb(0x2E, 0x55, 0x3E)),
             sel_fill: pick(dark, Color32::from_rgba_unmultiplied(0x10, 0x7C, 0x41, 0x1C), Color32::from_rgba_unmultiplied(0x10, 0x7C, 0x41, 0x24)),
+            active_row: pick(dark, Color32::from_rgba_unmultiplied(0x10, 0x7C, 0x41, 0x2C), Color32::from_rgba_unmultiplied(0x6F, 0xD3, 0x9A, 0x30)),
             sel_border: Color32::from_rgb(0x10, 0x7C, 0x41),
             input_bg: pick(dark, Color32::WHITE, Color32::from_rgb(0x1F, 0x1F, 0x1F)),
             input_border: pick(dark, Color32::from_rgb(0xD1, 0xD1, 0xD1), Color32::from_rgb(0x50, 0x50, 0x50)),

crates/ui-egui/src/window_ui.rs

@@ -31,6 +31,8 @@ pub struct WindowUi {
     ribbon_tab: String,
     /// The status bar's Ready/Enter/Edit, which follows the window's cell draft.
     mode: gridcraft_engine::Mode,
+    /// A key tip's control request waiting for the frame that draws this window's ribbon.
+    keytip_invoke_next: Option<&'static str>,
 }
 
 impl WindowUi {
@@ -70,6 +72,7 @@ impl SheetApp {
             open_switch_windows,
             ribbon_tab,
             mode,
+            keytip_invoke_next,
         } = w;
         std::mem::swap(&mut self.editor, editor);
         std::mem::swap(&mut self.text_box_editor, text_box_editor);
@@ -86,6 +89,7 @@ impl SheetApp {
         std::mem::swap(&mut self.open_switch_windows, open_switch_windows);
         std::mem::swap(&mut self.ui.ribbon_tab, ribbon_tab);
         std::mem::swap(&mut self.session.mode, mode);
+        std::mem::swap(&mut self.ui.keytip_invoke_next, keytip_invoke_next);
     }
 
     /// The window whose interface state is in the per-window fields.
@@ -98,6 +102,14 @@ impl SheetApp {
     /// in (a window never seen before starts fresh). A closed window's state is dropped.
     pub fn follow_active_window(&mut self) {
         let active = self.session.active_window();
+        // A window hidden while parked (from another window's View › Hide) isn't drawn either:
+        // its waiting key tip request goes, as it does for a window hidden as it is left.
+        let session = &self.session;
+        for (id, parked) in &mut self.parked {
+            if session.window(*id).is_some_and(|w| w.hidden) {
+                parked.keytip_invoke_next = None;
+            }
+        }
         if active == self.ui_window {
             return;
         }
@@ -108,7 +120,12 @@ impl SheetApp {
         };
         let mut outgoing = WindowUi::fresh(&self.grid, &self.ui.ribbon_tab);
         self.swap_window_ui(&mut outgoing);
-        if self.session.window(previous).is_some() {
+        if let Some(window) = self.session.window(previous) {
+            // A hidden window isn't drawn: a key tip request waiting for its next frame would
+            // fire whenever it is shown again, so it goes.
+            if window.hidden {
+                outgoing.keytip_invoke_next = None;
+            }
             self.parked.insert(previous, outgoing);
         }
         if let Some(mut incoming) = active.and_then(|w| self.parked.remove(&w)) {

crates/ui-egui/tests/it/active_row_highlight.rs

@@ -0,0 +1,150 @@
+//! "Highlight the active cell's row": a global preference, off by default, that tints the whole
+//! row of the active cell and leaves the workbook alone.
+
+use egui::{Shape, vec2};
+use gridcraft_engine::Session;
+use gridcraft_engine::core::CellRef;
+use gridcraft_ui_egui::theme::Tokens;
+use gridcraft_ui_egui::{SheetApp, UiState, grid::Geo, grid::active_row_band};
+use serde_json::json;
+
+fn harness(session: Session) -> egui_kittest::Harness<'static, SheetApp> {
+    let mut h = crate::common::builder().with_size(vec2(1200.0, 800.0)).build_ui_state(
+        |ui, app: &mut SheetApp| {
+            app.logic(ui.ctx());
+            app.ui(ui);
+        },
+        crate::common::app(session),
+    );
+    h.run_steps(4);
+    h
+}
+
+fn book(active: &str) -> Session {
+    let mut session = Session::new();
+    session.new_workbook();
+    session.execute("selection.set", json!({"range": active})).unwrap();
+    session
+}
+
+/// The rectangles painted with the highlight's own colour.
+fn tinted(h: &egui_kittest::Harness<'_, SheetApp>) -> Vec<egui::Rect> {
+    let tint = Tokens::get(&h.ctx).active_row;
+    h.output()
+        .shapes
+        .iter()
+        .filter_map(|clipped| match &clipped.shape {
+            Shape::Rect(r) if r.fill == tint => Some(r.rect),
+            _ => None,
+        })
+        .collect()
+}
+
+#[test]
+fn it_is_off_by_default_and_paints_nothing() {
+    assert!(!UiState::default().highlight_active_row);
+    let h = harness(book("C5"));
+    assert!(tinted(&h).is_empty());
+}
+
+#[test]
+fn turned_on_it_tints_the_active_row_across_the_columns() {
+    let mut h = harness(book("C5"));
+    assert_eq!(h.state_mut().run("options.highlightActiveRow", json!({"on": true})), Ok(json!({"on": true})));
+    h.run_steps(2);
+    let bands = tinted(&h);
+    assert_eq!(bands.len(), 1, "{bands:?}");
+    let app = h.state();
+    let sheet = app.session.active().unwrap().wb.active().unwrap();
+    let geo = Geo::new(sheet, app.grid.rect.unwrap(), app.view().scroll);
+    let cell = geo.cell_rect(sheet, CellRef::parse("C5").unwrap());
+    assert_eq!((bands[0].top(), bands[0].bottom()), (cell.top(), cell.bottom()));
+    assert!(bands[0].left() <= geo.cells.left() + 1.0, "starts at the first column: {:?}", bands[0]);
+    assert!(bands[0].right() >= geo.cells.right() - 1.0, "reaches the last visible column: {:?}", bands[0]);
+}
+
+#[test]
+fn the_band_follows_the_active_cell_and_only_the_row() {
+    let mut h = harness(book("C5"));
+    h.state_mut().run("options.highlightActiveRow", json!({"on": true})).unwrap();
+    h.state_mut().session.execute("selection.set", json!({"range": "E9"})).unwrap();
+    h.run_steps(2);
+    let bands = tinted(&h);
+    assert_eq!(bands.len(), 1, "a row, and no column band: {bands:?}");
+    let app = h.state();
+    let sheet = app.session.active().unwrap().wb.active().unwrap();
+    let geo = Geo::new(sheet, app.grid.rect.unwrap(), app.view().scroll);
+    assert_eq!(bands[0].top(), geo.cell_rect(sheet, CellRef::parse("E9").unwrap()).top());
+}
+
+#[test]
+fn it_applies_to_every_sheet_and_workbook() {
+    let mut h = harness(book("C5"));
+    h.state_mut().run("options.highlightActiveRow", json!({"on": true})).unwrap();
+    h.state_mut().session.execute("home.insertSheet", json!({"name": "Other"})).unwrap();
+    h.run_steps(2);
+    assert_eq!(tinted(&h).len(), 1, "another sheet");
+    h.state_mut().session.new_workbook();
+    h.run_steps(2);
+    assert_eq!(tinted(&h).len(), 1, "another workbook");
+}
+
+#[test]
+fn turning_it_off_clears_the_band_and_the_toggle_leaves_the_workbook_alone() {
+    let mut h = harness(book("C5"));
+    let dirty = h.state().session.active().unwrap().is_dirty();
+    assert_eq!(h.state_mut().run("options.highlightActiveRow", json!({})), Ok(json!({"on": true})), "no parameters: it toggles");
+    h.run_steps(2);
+    assert_eq!(h.state().session.active().unwrap().is_dirty(), dirty);
+    assert_eq!(h.state_mut().run("options.highlightActiveRow", json!({})), Ok(json!({"on": false})));
+    h.run_steps(2);
+    assert!(tinted(&h).is_empty());
+    assert_eq!(h.state().session.active().unwrap().is_dirty(), dirty);
+}
+
+#[test]
+fn the_preference_survives_a_restart_and_older_settings_read_as_off() {
+    let state = UiState { highlight_active_row: true, ..UiState::default() };
+    let saved = serde_json::to_string(&state).unwrap();
+    assert!(serde_json::from_str::<UiState>(&saved).unwrap().highlight_active_row);
+    assert!(!serde_json::from_str::<UiState>("{}").unwrap().highlight_active_row);
+}
+
+#[test]
+fn a_hidden_row_or_a_row_outside_the_quadrant_has_no_band() {
+    let mut session = book("A1");
+    session.execute("home.rowHeight", json!({"rows": "5:5", "height": 0})).unwrap();
+    let h = harness(session);
+    let app = h.state();
+    let sheet = app.session.active().unwrap().wb.active().unwrap();
+    let geo = Geo::new(sheet, app.grid.rect.unwrap(), app.view().scroll);
+    assert_eq!(active_row_band(&geo, sheet, 4, (0, 20), (0, 5)), None, "hidden");
+    assert_eq!(active_row_band(&geo, sheet, 30, (0, 20), (0, 5)), None, "outside");
+    assert!(active_row_band(&geo, sheet, 6, (0, 20), (0, 5)).is_some());
+}
+
+#[test]
+fn in_page_layout_the_band_shows_on_a_click_to_add_data_page_too() {
+    let mut h = harness(book("C5"));
+    h.state_mut().run("options.highlightActiveRow", json!({"on": true})).unwrap();
+    h.state_mut().session.execute("view.pageLayout", json!({})).unwrap();
+    h.run_steps(3);
+    let bands = tinted(&h);
+    // Each page paints its own part of the row; the faded page paints it again over the fade.
+    let repeated = bands.iter().filter(|b| bands.iter().filter(|o| o == b).count() == 2).count();
+    assert_eq!(repeated, 2, "{bands:?}");
+    assert!(bands.iter().all(|b| b.top() == bands[0].top()), "one row: {bands:?}");
+}
+
+#[test]
+fn with_frozen_panes_the_band_crosses_the_frozen_columns() {
+    let mut h = harness(book("C5"));
+    h.state_mut().session.execute("selection.set", json!({"range": "C3"})).unwrap();
+    h.state_mut().session.execute("view.freezePanes", json!({})).unwrap();
+    h.state_mut().session.execute("selection.set", json!({"range": "E7"})).unwrap();
+    h.state_mut().run("options.highlightActiveRow", json!({"on": true})).unwrap();
+    h.run_steps(2);
+    let bands = tinted(&h);
+    assert_eq!(bands.len(), 2, "the frozen columns' pane and the scrolling one: {bands:?}");
+    assert_eq!(bands[0].top(), bands[1].top());
+}

crates/ui-egui/tests/it/borders.rs

@@ -160,3 +160,40 @@ fn merged_range_draws_the_outline_from_its_edge_cells() {
     assert_eq!(ys.iter().filter(|y| (**y - max_y).abs() < 0.5).count(), 4, "bottom edge");
     assert!(max_x - min_x > 100.0 && max_y - min_y > 40.0, "the outline spans the whole merged area");
 }
+
+/// #2544: a merged range in frozen columns keeps its whole outline while the others scroll: the
+/// bottom edge under its last column ends at that column's own right edge, the freeze line.
+#[test]
+fn frozen_merged_range_keeps_its_outline_when_scrolled() {
+    let mut h = harness();
+    h.state_mut().run("home.borders", json!({"range": "A2:B3", "preset": "thickOutside", "color": "#C81E1E"})).unwrap();
+    h.state_mut().run("home.mergeCells", json!({"range": "A2:B3"})).unwrap();
+    h.state_mut().run("view.freezePanes", json!({"cell": "C1"})).unwrap();
+    h.state_mut().run("selection.set", json!({"range": "H10"})).unwrap();
+    h.state_mut().view_mut().unwrap().scroll.x = 300.0;
+    h.run_steps(6);
+    let freeze_x = {
+        let app = h.state();
+        let sheet = app.session.active().unwrap().wb.active().unwrap();
+        let geo = gridcraft_ui_egui::grid::Geo::new(sheet, app.grid.rect.unwrap(), app.view().scroll);
+        geo.cells.left() + geo.frozen_w
+    };
+    let red = Color32::from_rgb(0xC8, 0x1E, 0x1E);
+    let right_ends: Vec<f32> = h
+        .output()
+        .shapes
+        .iter()
+        .filter_map(|shape| match &shape.shape {
+            Shape::LineSegment { points, stroke } if stroke.color == red && (points[0].y - points[1].y).abs() < 0.5 => {
+                Some(points[0].x.max(points[1].x))
+            }
+            _ => None,
+        })
+        .collect();
+    assert_eq!(right_ends.len(), 4, "top and bottom edges, one segment per column: {right_ends:?}");
+    assert_eq!(
+        right_ends.iter().filter(|x| (**x - freeze_x).abs() < 1.0).count(),
+        2,
+        "B's segments end at the freeze line: {right_ends:?} vs {freeze_x}"
+    );
+}

crates/ui-egui/tests/it/clipboard.rs

@@ -482,3 +482,80 @@ fn the_cut_text_pastes_again_once_the_clipboard_has_held_other_text() {
     h.run_steps(2);
     assert_eq!(value_at(&h, "H1"), Some(Value::from("Name")), "the same text copied afresh pastes");
 }
+
+/// The floating pictures on the active sheet: (anchor cell, width, height, mime).
+fn pictures(h: &Harness) -> Vec<(String, f32, f32, String)> {
+    let sh = h.state().session.active().unwrap().wb.active().unwrap();
+    sh.images.iter().map(|i| (i.anchor.cell.a1(), i.anchor.width, i.anchor.height, i.mime.clone())).collect()
+}
+
+#[test]
+fn cmd_v_with_a_picture_on_the_clipboard_inserts_it_at_the_active_cell() {
+    // A screenshot or a browser image: the clipboard has pixels and no text (#699, #3018, #3182).
+    let mut h = harness(Services::default());
+    h.state_mut().run("selection.set", json!({"cell": "C5"})).unwrap();
+    let image = egui::ColorImage::new([4, 3], vec![egui::Color32::from_rgb(200, 30, 30); 12]);
+    h.input_mut().events.push(Event::PasteImage(std::sync::Arc::new(image)));
+    h.run_steps(2);
+    assert!(h.state().message.is_none(), "{:?}", h.state().message);
+    assert_eq!(pictures(&h), vec![("C5".to_string(), 4.0, 3.0, "image/png".to_string())]);
+    let sh = h.state().session.active().unwrap().wb.active().unwrap();
+    let png = image::load_from_memory(&sh.images[0].data).unwrap().to_rgba8();
+    assert_eq!(png.get_pixel(3, 2).0, [200, 30, 30, 255], "the pixels survive the PNG round trip");
+
+    // One undo step removes it.
+    h.state_mut().run("edit.undo", json!({})).unwrap();
+    assert!(pictures(&h).is_empty());
+}
+
+#[test]
+fn a_malformed_clipboard_picture_is_refused_without_inserting() {
+    let mut h = harness(Services::default());
+    let mut image = egui::ColorImage::new([4, 3], vec![egui::Color32::WHITE; 12]);
+    image.pixels.truncate(5);
+    h.input_mut().events.push(Event::PasteImage(std::sync::Arc::new(image)));
+    h.run_steps(2);
+    assert!(pictures(&h).is_empty());
+    assert!(h.state().message.is_some(), "the user is told the paste failed");
+
+    dismiss(&mut h);
+    h.input_mut().events.push(Event::PasteImage(std::sync::Arc::new(egui::ColorImage::new([0, 0], Vec::new()))));
+    h.run_steps(2);
+    assert!(pictures(&h).is_empty());
+
+    // Wider than the 16384-pixel limit: refused before its pixels are copied.
+    dismiss(&mut h);
+    let wide = egui::ColorImage::new([20_000, 1], vec![egui::Color32::WHITE; 20_000]);
+    h.input_mut().events.push(Event::PasteImage(std::sync::Arc::new(wide)));
+    h.run_steps(2);
+    assert!(pictures(&h).is_empty());
+    let message = format!("{:?}", h.state().message);
+    assert!(message.contains("too large"), "{message}");
+}
+
+#[test]
+fn ribbon_paste_pastes_a_clipboard_picture_when_there_is_no_text() {
+    let reads = Rc::new(RefCell::new(0));
+    let count = reads.clone();
+    let (_, mut services) = system_clipboard("");
+    services.paste_image = Some(Box::new(move || {
+        *count.borrow_mut() += 1;
+        Some(image::RgbaImage::from_pixel(5, 2, image::Rgba([0, 0, 255, 255])))
+    }));
+    let mut h = harness(services);
+    h.state_mut().run("selection.set", json!({"cell": "B7"})).unwrap();
+    click_paste(&mut h);
+    assert_eq!(*reads.borrow(), 1);
+    assert_eq!(pictures(&h), vec![("B7".to_string(), 5.0, 2.0, "image/png".to_string())]);
+}
+
+#[test]
+fn ribbon_paste_prefers_clipboard_text_over_a_picture() {
+    let (_, mut services) = system_clipboard("words");
+    services.paste_image = Some(Box::new(|| Some(image::RgbaImage::new(1, 1))));
+    let mut h = harness(services);
+    h.state_mut().run("selection.set", json!({"cell": "D2"})).unwrap();
+    click_paste(&mut h);
+    assert_eq!(value_at(&h, "D2"), Some(Value::from("words")));
+    assert!(pictures(&h).is_empty());
+}

crates/ui-egui/tests/it/context_menu_stays_open.rs

@@ -100,3 +100,36 @@ fn a_quick_right_click_between_pixels_keeps_the_menu_open_on_retina() {
     h.run_steps(4);
     assert!(h.state().grid.context_menu.is_some(), "the menu stays open");
 }
+
+#[test]
+fn a_linked_cell_offers_to_edit_open_and_remove_its_link() {
+    // #2120: the menu only offered "Link…", and its dialog was titled Insert Hyperlink.
+    use egui_kittest::kittest::Queryable as _;
+    let mut h = harness();
+    h.state_mut().session.execute("insert.link", serde_json::json!({"cell": "B2", "target": "#Sheet1!D9", "text": "Go"})).unwrap();
+    h.run_steps(2);
+    quick_right_click(&mut h, "B2");
+    assert!(h.query_by_label("Edit Hyperlink…").is_some() && h.query_by_label("Open Hyperlink").is_some(), "linked cell menu");
+    assert!(h.query_by_label("Link…").is_none());
+    // Open Hyperlink follows it (an internal reference selects its cell).
+    h.get_by_label("Open Hyperlink").click();
+    h.run_steps(4);
+    assert_eq!(h.state().session.active().unwrap().selection.active, CellRef::parse("D9").unwrap());
+    // Edit Hyperlink opens the link's own dialog.
+    quick_right_click(&mut h, "B2");
+    h.get_by_label("Edit Hyperlink…").click();
+    h.run_steps(4);
+    let d = h.state().dialog.as_ref().expect("the link dialog");
+    assert_eq!(d.title, "Edit Hyperlink");
+    assert_eq!(d.values.get("target").and_then(|v| v.as_str()), Some("#Sheet1!D9"));
+    h.state_mut().dialog = None;
+    h.run_steps(2);
+    // Remove Hyperlink takes the link away; a cell without one offers Link… again.
+    quick_right_click(&mut h, "B2");
+    h.get_by_label("Remove Hyperlink").click();
+    h.run_steps(4);
+    let sh = h.state().session.active().unwrap().wb.active().unwrap().clone();
+    assert!(!sh.hyperlinks.contains_key(&CellRef::parse("B2").unwrap()));
+    quick_right_click(&mut h, "B2");
+    assert!(h.query_by_label("Link…").is_some() && h.query_by_label("Edit Hyperlink…").is_none());
+}

crates/ui-egui/tests/it/drag_cursor.rs

@@ -172,6 +172,33 @@ fn moving_a_selection_keeps_move_and_still_moves_cells() {
     assert_eq!(sh.value(CellRef::parse("E5").unwrap()), Value::Number(2.0));
 }
 
+#[test]
+fn moving_a_selection_onto_data_asks_before_replacing_it() {
+    // #3136: the drop replaced the cells there without asking.
+    let mut h = harness();
+    h.state_mut().session.execute("selection.set", json!({"range": "A2:B2"})).unwrap();
+    h.run_steps(2);
+    let r = selection_rect(&h);
+    press(&mut h, pos2(r.left() + 10.0, r.top() + 1.0));
+    let target = cell(&h, "A1").center();
+    move_with_cursor(&mut h, target, CursorIcon::Move);
+    button(&mut h, target, false);
+    h.run_steps(1);
+    let q = h.state().macros.question.clone().expect("a question before replacing A1:B1");
+    assert_eq!(q.text, "There's already data here. Do you want to replace it?");
+    let sh = h.state().session.active().unwrap().wb.active().unwrap();
+    assert_eq!(sh.value(CellRef::parse("A1").unwrap()), Value::text("A"));
+    assert_eq!(sh.value(CellRef::parse("A2").unwrap()), Value::Number(1.0));
+    // OK replaces them.
+    h.key_press(egui::Key::Enter);
+    h.run_steps(2);
+    assert!(h.state().macros.question.is_none());
+    let sh = h.state().session.active().unwrap().wb.active().unwrap();
+    assert_eq!(sh.value(CellRef::parse("A1").unwrap()), Value::Number(1.0));
+    assert_eq!(sh.value(CellRef::parse("B1").unwrap()), Value::Number(2.0));
+    assert_eq!(sh.value(CellRef::parse("A2").unwrap()), Value::Empty);
+}
+
 #[test]
 fn resizing_headers_keeps_the_axis_cursor_when_leaving_the_header() {
     for cols in [true, false] {

crates/ui-egui/tests/it/find_dialog_focus.rs

@@ -34,3 +34,27 @@ fn typing_right_after_ctrl_f_fills_find_what() {
 fn typing_right_after_ctrl_h_fills_find_what() {
     assert_eq!(type_after_shortcut(Key::H), Some(json!("abc")));
 }
+
+/// With a range selected, Find All in the dialog lists only the matches inside it, as in Excel
+/// (#3224); with one cell selected it searches the whole sheet.
+#[test]
+fn find_all_with_a_range_selected_searches_only_the_range() {
+    use egui_kittest::kittest::Queryable;
+    for (range, expected) in [("B1:B3", 2), ("C5", 4)] {
+        let mut h = harness();
+        let app = h.state_mut();
+        app.session.execute("range.setValues", json!({"range": "A1:B3", "values": [["pear", "pear"], ["fig", "fig"], ["pear", "pear"]]})).unwrap();
+        app.session.execute("selection.set", json!({"range": range})).unwrap();
+        h.run_steps(2);
+        h.input_mut().events.push(Event::Key { key: Key::F, physical_key: Some(Key::F), pressed: true, repeat: false, modifiers: CTRL });
+        h.input_mut().events.push(Event::Key { key: Key::F, physical_key: Some(Key::F), pressed: false, repeat: false, modifiers: CTRL });
+        h.run_steps(6);
+        h.input_mut().events.push(Event::Text("pear".into()));
+        h.run_steps(4);
+        h.get_by_label("Find All").click();
+        h.run_steps(4);
+        let d = h.state().dialog.as_ref().expect("find dialog is open");
+        let count = d.result.as_ref().map(|r| r["count"].clone());
+        assert_eq!(count, Some(json!(expected)), "{range} selected");
+    }
+}

crates/ui-egui/tests/it/font_size_box.rs

@@ -1,6 +1,7 @@
-//! Home ▸ Font Size is a box you type a size into, with the standard sizes behind its arrow (#932).
+//! Home ▸ Font Size is a box you type a size into, with the standard sizes behind its arrow (#932),
+//! and the size sits in the middle of that box (#3155).
 
-use egui::{Event, Key, Modifiers, accesskit::Role};
+use egui::{Event, Key, Modifiers, Rect, Shape, accesskit::Role};
 use egui_kittest::kittest::Queryable as _;
 use gridcraft_engine::Session;
 use gridcraft_engine::core::{CellRef, Value};
@@ -124,3 +125,31 @@ fn the_arrow_opens_the_plain_list_of_sizes() {
     h.run_steps(3);
     assert_eq!(size(&h, "A1"), 12.0, "Down from 11 then Enter picks 12");
 }
+
+/// The on-screen box of the painted text `text` that overlaps `within`. The grid's row headers
+/// paint "11" too, so the size has to be looked for inside its own box.
+fn painted_text(h: &Harness, text: &str, within: Rect) -> Rect {
+    h.output()
+        .shapes
+        .iter()
+        .find_map(|s| match &s.shape {
+            Shape::Text(t) if t.galley.job.text == text => {
+                let rect = t.galley.rect.translate(t.pos.to_vec2());
+                within.intersects(rect).then_some(rect)
+            }
+            _ => None,
+        })
+        .unwrap_or_else(|| panic!("{text:?} is painted inside {within:?}"))
+}
+
+#[test]
+/// A text edit aligns its text to the top of its rect unless told otherwise, which left the size
+/// 4 pt above the Font name's baseline.
+fn the_size_is_vertically_centered_in_its_box() {
+    let h = harness();
+    let field = h.get_by_role_and_label(Role::TextInput, "Font Size").rect();
+    let value = painted_text(&h, "11", field);
+    let name = painted_text(&h, "Calibri", Rect::EVERYTHING);
+    assert!((value.center().y - field.center().y).abs() <= 1.0, "the size is centered in its box: {value:?} in {field:?}");
+    assert!((value.center().y - name.center().y).abs() <= 1.0, "the size is on the Font name's baseline: {value:?} against {name:?}");
+}

crates/ui-egui/tests/it/formula_bar_expand.rs

@@ -1,6 +1,6 @@
 //! Ctrl+Shift+U (Control+Shift+U in Excel for Mac) expands and collapses the formula bar.
 
-use egui::{Event, Key, Modifiers};
+use egui::{Event, Key, Modifiers, vec2};
 use gridcraft_engine::Session;
 use gridcraft_ui_egui::SheetApp;
 use gridcraft_ui_egui::keymap::{Shortcut, lookup};
@@ -84,3 +84,80 @@ fn expand_formula_bar_command_sets_or_toggles_the_state() {
     assert_eq!(h.state_mut().run("view.expandFormulaBar", json!({})), Ok(json!({"on": false})));
     assert!(!expanded(&h));
 }
+
+fn drag(h: &mut Harness, from: egui::Pos2, to: egui::Pos2) {
+    use egui::PointerButton;
+    h.input_mut().events.extend([
+        Event::PointerMoved(from),
+        Event::PointerButton { pos: from, button: PointerButton::Primary, pressed: true, modifiers: Modifiers::NONE },
+    ]);
+    h.step();
+    for i in 1..=6 {
+        h.input_mut().events.push(Event::PointerMoved(from + (to - from) * (i as f32 / 6.0)));
+        h.step();
+    }
+    h.input_mut().events.push(Event::PointerButton { pos: to, button: PointerButton::Primary, pressed: false, modifiers: Modifiers::NONE });
+    h.run_steps(20);
+}
+
+fn bar(h: &Harness) -> gridcraft_ui_egui::formula_bar::BarLayout {
+    gridcraft_ui_egui::formula_bar::BarLayout::get(&h.ctx)
+}
+
+#[test]
+fn dragging_the_bottom_edge_sets_the_height_that_expanding_returns_to() {
+    let mut h = harness();
+    h.run_steps(20);
+    let start = bar(&h);
+    assert_eq!(start.visible_lines, 1, "one line of text shows a one-line bar");
+    assert!(
+        start.handle.height() > 0.0 && (start.handle.bottom() - start.field.bottom()).abs() <= 4.0,
+        "the handle is the bar's bottom edge: {start:?}"
+    );
+    // Drag the edge down about five and a half rows: the bar snaps to whole lines.
+    let row = 17.0;
+    drag(&mut h, start.handle.center(), start.handle.center() + vec2(0.0, 5.5 * row));
+    let lines = h.state().ui.formula_bar_lines;
+    assert!(expanded(&h), "a taller bar is expanded");
+    assert!((6..=7).contains(&lines), "about six more lines: {lines}");
+    assert_eq!(bar(&h).visible_lines, lines, "the field shows the dragged lines: {:?}", bar(&h));
+    // Collapse, then expand: back to the dragged height, not the default five lines.
+    ctrl_shift_u(&mut h, CTRL_SHIFT);
+    h.run_steps(20);
+    assert!(!expanded(&h));
+    assert_eq!(bar(&h).visible_lines, 1);
+    ctrl_shift_u(&mut h, CTRL_SHIFT);
+    h.run_steps(20);
+    assert_eq!(bar(&h).visible_lines, lines, "expanding returns to the dragged height");
+    // Dragging the edge up to one line collapses the bar and keeps the expanded height.
+    let edge = bar(&h).handle.center();
+    drag(&mut h, edge, edge - vec2(0.0, 20.0 * row));
+    assert!(!expanded(&h), "a one-line bar is collapsed");
+    assert_eq!(bar(&h).visible_lines, 1);
+    assert_eq!(h.state().ui.formula_bar_lines, lines);
+}
+
+#[test]
+fn expand_formula_bar_with_lines_sets_the_expanded_height() {
+    let mut h = harness();
+    assert_eq!(h.state_mut().run("view.expandFormulaBar", json!({"lines": 8})), Ok(json!({"on": true, "lines": 8})));
+    assert_eq!(h.state_mut().run("view.expandFormulaBar", json!({"lines": 1})), Ok(json!({"on": false, "lines": 8})), "one line collapses");
+    assert_eq!(h.state_mut().run("view.expandFormulaBar", json!({})), Ok(json!({"on": true})));
+    assert_eq!(h.state().ui.formula_bar_lines, 8, "expanding returns to the set height");
+    assert_eq!(h.state_mut().run("view.expandFormulaBar", json!({"lines": 0})), Ok(json!({"on": false, "lines": 8})), "zero lines is one line");
+    assert_eq!(h.state_mut().run("view.expandFormulaBar", json!({"lines": u64::MAX})), Ok(json!({"on": true, "lines": 100})), "capped");
+}
+
+#[test]
+fn an_expanded_formula_bar_leaves_room_for_the_worksheet_in_a_short_window() {
+    // At 400 pt the title bar and ribbon leave about 236 pt: half the window as a formula bar
+    // would leave the status bar and sheet tabs no room for any of the grid.
+    let mut session = Session::new();
+    session.new_workbook();
+    let mut h = crate::common::harness_with(crate::common::builder().with_size(vec2(1200.0, 400.0)), crate::common::app(session), 4);
+    h.state_mut().run("view.expandFormulaBar", json!({"lines": 100})).unwrap();
+    h.run_steps(60);
+    let cells = h.state().grid.cells_rect.expect("the grid is drawn");
+    assert!(cells.height() >= 40.0, "a couple of rows stay visible under a {} pt bar: {cells:?}", bar(&h).height);
+    assert!(bar(&h).visible_lines > 1, "the bar is still expanded");
+}

crates/ui-egui/tests/it/formula_point_headers.rs

@@ -173,3 +173,148 @@ fn shift_does_not_extend_a_row_reference_across_sheets() {
         [("6:6".into(), Some("Other sheet".into())),]
     );
 }
+
+fn press_and_drag(h: &mut egui_kittest::Harness<'_, SheetApp>, from: Pos2, to: Pos2, modifiers: Modifiers) {
+    h.input_mut().events.push(Event::ModifiersChanged(modifiers));
+    h.input_mut()
+        .events
+        .extend([Event::PointerMoved(from), Event::PointerButton { pos: from, button: PointerButton::Primary, pressed: true, modifiers }]);
+    h.step();
+    drag_to(h, to);
+}
+
+fn drag_to(h: &mut egui_kittest::Harness<'_, SheetApp>, to: Pos2) {
+    h.input_mut().events.push(Event::PointerMoved(to));
+    h.step();
+}
+
+fn release(h: &mut egui_kittest::Harness<'_, SheetApp>, at: Pos2) {
+    h.input_mut().events.push(Event::PointerButton { pos: at, button: PointerButton::Primary, pressed: false, modifiers: Modifiers::NONE });
+    h.run_steps(2);
+    h.input_mut().events.push(Event::ModifiersChanged(Modifiers::NONE));
+}
+
+fn text<'a>(h: &'a egui_kittest::Harness<'_, SheetApp>) -> &'a str {
+    h.state().editor.as_ref().map_or("", |ed| ed.text.as_str())
+}
+
+#[test]
+fn dragging_over_column_headers_extends_the_reference() {
+    let mut h = harness();
+    let (c, e, a, d) = (header_center(&h, false, 2), header_center(&h, false, 4), header_center(&h, false, 0), header_center(&h, false, 3));
+    press_and_drag(&mut h, c, e, Modifiers::NONE);
+    assert_eq!(text(&h), "=SUM(C:E");
+    // Back past the press: the reference follows the pointer instead of keeping E.
+    drag_to(&mut h, a);
+    assert_eq!(text(&h), "=SUM(A:C");
+    // The release position counts even without a movement frame before it.
+    release(&mut h, d);
+    assert_eq!(text(&h), "=SUM(C:D");
+    assert_eq!(h.state().session.active().unwrap().selection.current().a1(), "F8");
+}
+
+#[test]
+fn dragging_over_row_headers_extends_the_reference() {
+    let mut h = harness();
+    let (r3, r6, r2) = (header_center(&h, true, 2), header_center(&h, true, 5), header_center(&h, true, 1));
+    press_and_drag(&mut h, r3, r6, Modifiers::NONE);
+    assert_eq!(text(&h), "=SUM(3:6");
+    release(&mut h, r2);
+    assert_eq!(text(&h), "=SUM(2:3");
+    assert_eq!(h.state().session.active().unwrap().selection.current().a1(), "F8");
+}
+
+#[test]
+fn header_drag_on_another_sheet_keeps_the_qualifier() {
+    let mut h = harness();
+    h.state_mut().session.execute("home.insertSheet", json!({"name": "Other sheet"})).unwrap();
+    h.run_steps(2);
+    let (b, d) = (header_center(&h, false, 1), header_center(&h, false, 3));
+    press_and_drag(&mut h, b, d, Modifiers::NONE);
+    assert_eq!(text(&h), "=SUM('Other sheet'!B:D");
+}
+
+#[test]
+fn header_drag_with_command_keeps_the_earlier_argument() {
+    let mut h = harness();
+    let (a, e, f) = (header_center(&h, false, 0), header_center(&h, false, 4), header_center(&h, false, 5));
+    click(&mut h, a);
+    press_and_drag(&mut h, e, f, Modifiers { mac_cmd: true, command: true, ..Modifiers::NONE });
+    assert_eq!(text(&h), "=SUM(A:A,E:F");
+}
+
+#[test]
+fn header_drag_with_shift_keeps_the_far_end_of_the_reference() {
+    let mut h = harness();
+    let (c, e, d) = (header_center(&h, false, 2), header_center(&h, false, 4), header_center(&h, false, 3));
+    click(&mut h, c);
+    press_and_drag(&mut h, e, d, Modifiers { shift: true, ..Modifiers::NONE });
+    assert_eq!(text(&h), "=SUM(C:D");
+}
+
+#[test]
+fn clicks_on_headers_replace_the_reference_after_a_drag_too() {
+    let mut h = harness();
+    let (c, e, g) = (header_center(&h, false, 2), header_center(&h, false, 4), header_center(&h, false, 6));
+    press_and_drag(&mut h, c, e, Modifiers::NONE);
+    release(&mut h, e);
+    assert_eq!(text(&h), "=SUM(C:E");
+    click(&mut h, g);
+    assert_eq!(text(&h), "=SUM(G:G");
+}
+
+fn shift_arrow(h: &mut egui_kittest::Harness<'_, SheetApp>, key: egui::Key) {
+    let modifiers = Modifiers { shift: true, ..Modifiers::NONE };
+    h.input_mut().events.push(Event::ModifiersChanged(modifiers));
+    h.step();
+    for pressed in [true, false] {
+        h.input_mut().events.push(Event::Key { key, physical_key: None, pressed, repeat: false, modifiers });
+        h.step();
+    }
+    h.input_mut().events.push(Event::ModifiersChanged(Modifiers::NONE));
+    h.run_steps(2);
+}
+
+#[test]
+fn shift_arrow_after_a_header_drag_moves_the_dragged_end() {
+    let mut h = harness();
+    let (c, e) = (header_center(&h, false, 2), header_center(&h, false, 4));
+    press_and_drag(&mut h, c, e, Modifiers::NONE);
+    release(&mut h, e);
+    assert_eq!(text(&h), "=SUM(C:E");
+    shift_arrow(&mut h, egui::Key::ArrowRight);
+    assert_eq!(text(&h), "=SUM(C:F");
+
+    // Dragged leftwards, the dragged end is the first column.
+    let mut h = harness();
+    let (e, c) = (header_center(&h, false, 4), header_center(&h, false, 2));
+    press_and_drag(&mut h, e, c, Modifiers::NONE);
+    release(&mut h, c);
+    assert_eq!(text(&h), "=SUM(C:E");
+    shift_arrow(&mut h, egui::Key::ArrowLeft);
+    assert_eq!(text(&h), "=SUM(B:E");
+
+    let mut h = harness();
+    let (r1, r3) = (header_center(&h, true, 0), header_center(&h, true, 2));
+    press_and_drag(&mut h, r1, r3, Modifiers::NONE);
+    release(&mut h, r3);
+    assert_eq!(text(&h), "=SUM(1:3");
+    shift_arrow(&mut h, egui::Key::ArrowDown);
+    assert_eq!(text(&h), "=SUM(1:4");
+}
+
+#[test]
+fn shift_arrow_pointing_on_another_sheet_keeps_the_qualifier() {
+    let mut h = harness();
+    h.state_mut().session.execute("home.insertSheet", json!({"name": "Other sheet"})).unwrap();
+    h.run_steps(2);
+    let (b, d) = (header_center(&h, false, 1), header_center(&h, false, 3));
+    press_and_drag(&mut h, b, d, Modifiers::NONE);
+    release(&mut h, d);
+    assert_eq!(text(&h), "=SUM('Other sheet'!B:D");
+    let app = h.state_mut();
+    let mut ed = app.editor.take().unwrap();
+    gridcraft_ui_egui::grid::point_move(app, &mut ed, 0, 1, true, false);
+    app.editor = Some(ed);
+    assert_eq!(text(&h), "=SUM('Other sheet'!B:E");
+}

crates/ui-egui/tests/it/freeze_handles.rs

@@ -66,3 +66,36 @@ fn dragging_the_handles_freezes_moves_and_unfreezes() {
     drag(&mut h, rows.center(), pos2(rows.center().x, g.cells.top() - 5.0));
     assert_eq!(freeze(&h), None);
 }
+
+/// The last frozen column ends at the freeze line however far the other columns scroll, while
+/// the next column's left edge moves with the scroll (#2544).
+#[test]
+fn last_frozen_column_ends_at_the_freeze_line_when_scrolled() {
+    let mut h = harness();
+    h.state_mut().run("view.freezePanes", serde_json::json!({"cell": "C3"})).unwrap();
+    h.state_mut().view_mut().unwrap().scroll = egui::vec2(300.0, 200.0);
+    h.run_steps(2);
+    let g = geo(&h);
+    let sh = h.state().session.active().unwrap().wb.active().unwrap().clone();
+    let split = g.cells.min + egui::vec2(g.frozen_w, g.frozen_h);
+    assert!((g.x_end(&sh, 1) - split.x).abs() < 0.01 && (g.y_end(&sh, 1) - split.y).abs() < 0.01);
+    assert!(g.x(&sh, 2) < split.x && g.y(&sh, 2) < split.y, "C and row 3 are scrolled under the frozen panes");
+    assert!(g.same_col_pane(0, 1) && g.same_col_pane(2, 9) && !g.same_col_pane(1, 2));
+}
+
+/// Dropping the column handle on the left part of the last frozen column while scrolled freezes
+/// up to its left edge: the column's right edge is the freeze line, not the next column's
+/// scrolled position (#2544).
+#[test]
+fn dragging_the_column_handle_when_scrolled_measures_the_last_frozen_column() {
+    let mut h = harness();
+    h.state_mut().run("view.freezePanes", serde_json::json!({"cell": "C1"})).unwrap();
+    h.state_mut().view_mut().unwrap().scroll = egui::vec2(300.0, 0.0);
+    h.run_steps(2);
+    let g = geo(&h);
+    let sh = h.state().session.active().unwrap().wb.active().unwrap().clone();
+    let (cols, _) = freeze_handles(&g);
+    assert!(g.x(&sh, 2) < g.x(&sh, 1), "C is scrolled left of B");
+    drag(&mut h, cols.center(), pos2(g.x(&sh, 1) + 10.0, g.cells.top() + 40.0));
+    assert_eq!(freeze(&h), Some((0, 1)));
+}

crates/ui-egui/tests/it/ink_render.rs

@@ -0,0 +1,45 @@
+//! Committed ink is painted as the pen previews it, at any zoom.
+
+use egui::Shape;
+use egui::epaint::ColorMode;
+use gridcraft_engine::Session;
+use gridcraft_ui_egui::SheetApp;
+use serde_json::json;
+
+/// The colour of the ink stroke drawn from (40, 40) to (200, 40) sheet points, `width` points
+/// wide: the two-point horizontal path whose width is `width` at its own scale (160 pt long).
+fn painted_ink(h: &egui_kittest::Harness<'static, SheetApp>, width: f32) -> Option<egui::Color32> {
+    h.output().shapes.iter().find_map(|s| match &s.shape {
+        Shape::Path(p) if p.points.len() == 2 && (p.points[0].y - p.points[1].y).abs() < 0.01 => {
+            let z = (p.points[1].x - p.points[0].x).abs() / 160.0;
+            match p.stroke.color {
+                ColorMode::Solid(c) if z > 0.0 && (p.stroke.width - width * z).abs() < 0.01 => Some(c),
+                _ => None,
+            }
+        }
+        _ => None,
+    })
+}
+
+#[test]
+fn ink_translucency_follows_the_pen_not_the_zoom() {
+    // A highlighter (over 8 pt) is translucent and a pen isn't, whatever the zoom: the committed
+    // stroke used its width on screen, so at 50% a 12 pt highlighter turned opaque and at 200% a
+    // 6 pt pen turned translucent, unlike the pen's preview.
+    for (width, zoom, translucent) in [(12.0_f32, 50, true), (6.0, 200, false), (12.0, 100, true), (6.0, 100, false)] {
+        let mut s = Session::new();
+        s.new_workbook();
+        s.execute("view.zoom", json!({"percent": zoom})).unwrap();
+        s.execute("draw.stroke", json!({"points": [[40, 40], [200, 40]], "color": "#FFFF00", "width": width})).unwrap();
+        let mut h = crate::common::builder().with_size(egui::vec2(1200.0, 800.0)).build_ui_state(
+            |ui, app: &mut SheetApp| {
+                app.logic(&ui.ctx().clone());
+                app.ui(ui);
+            },
+            crate::common::app(s),
+        );
+        h.run_steps(4);
+        let c = painted_ink(&h, width).unwrap_or_else(|| panic!("the {width} pt stroke is painted at {zoom}%"));
+        assert_eq!(c.a() < 255, translucent, "{width} pt at {zoom}%: {c:?}");
+    }
+}

crates/ui-egui/tests/it/keyboard_shortcuts.rs

@@ -100,6 +100,11 @@ fn windows_and_mac_variants() {
     assert_eq!(lookup(Key::ArrowLeft, Some(Key::Num4), alt_shift, false), run("data.ungroup"));
     assert_eq!(lookup(Key::PageDown, Some(Key::Num3), Modifiers::ALT, false), Some(Shortcut::ScreenRight));
     assert_eq!(lookup(Key::PageDown, Some(Key::Num3), CTRL_SHIFT, false), None);
+    // Ctrl+. is Next Corner of Selection, with Control on a Mac too (#1442); Cmd+Shift+. stays
+    // Increase Font Size.
+    assert_eq!(lookup(Key::Period, Some(Key::Period), cmd, false), run("selection.nextCorner"));
+    assert_eq!(lookup(Key::Period, Some(Key::Period), ctrl, true), run("selection.nextCorner"));
+    assert_eq!(lookup(Key::Period, Some(Key::Period), Modifiers { shift: true, ..mac_cmd }, true), run("home.increaseFontSize"));
     // Plain keys stay with the grid (typing, navigation).
     assert_eq!(lookup(Key::A, Some(Key::A), Modifiers::NONE, false), None);
     assert_eq!(lookup(Key::F2, Some(Key::F2), Modifiers::NONE, false), None);

crates/ui-egui/tests/it/keytips_generated.rs

@@ -2754,6 +2754,308 @@ fn keytip_fp_() {
     assert!(h.state().session.journal.iter().any(|(id, _)| id == "file.print"), "FP must journal file.print");
 }
 
+#[test]
+fn keytip_ir_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "IR", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.insertRows"), "IR must journal home.insertRows");
+}
+
+#[test]
+fn keytip_ic_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "IC", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.insertColumns"), "IC must journal home.insertColumns");
+}
+
+#[test]
+fn keytip_ie_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "IE", false);
+    assert!(h.state().dialog.is_some(), "IE must open the insertCells dialog");
+}
+
+#[test]
+fn keytip_iw_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "IW", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.insertSheet"), "IW must journal home.insertSheet");
+}
+
+#[test]
+fn keytip_if_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "IF", false);
+    assert!(h.state().dialog.is_some(), "IF must open the insertFunction dialog");
+}
+
+#[test]
+fn keytip_ind_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "IND", false);
+    assert!(h.state().dialog.is_some(), "IND must open the defineName dialog");
+}
+
+#[test]
+fn keytip_is_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "IS", false);
+    assert!(h.state().message.is_none() && h.state().toast.is_none(), "IS must route to its control without an error box");
+    assert_eq!(h.state().keytips.prefix(), None);
+}
+
+#[test]
+fn keytip_ed_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "ED", false);
+    assert!(h.state().dialog.is_some(), "ED must open the deleteCells dialog");
+}
+
+#[test]
+fn keytip_em_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "EM", false);
+    assert!(h.state().dialog.is_some(), "EM must open the moveSheet dialog");
+}
+
+#[test]
+fn keytip_el_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "EL", false);
+    assert!(h.state().message.is_some() || h.state().toast.is_some(), "EL must invoke home.deleteSheet and surface its missing-params error");
+}
+
+#[test]
+fn keytip_eaa_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "EAA", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "edit.clearAll"), "EAA must journal edit.clearAll");
+}
+
+#[test]
+fn keytip_eac_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "EAC", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "edit.clearContents"), "EAC must journal edit.clearContents");
+}
+
+#[test]
+fn keytip_eam_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "EAM", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "edit.clearComments"), "EAM must journal edit.clearComments");
+}
+
+#[test]
+fn keytip_ef_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "EF", false);
+    assert!(h.state().dialog.is_some(), "EF must open the find dialog");
+}
+
+#[test]
+fn keytip_eg_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "EG", false);
+    assert!(h.state().dialog.is_some(), "EG must open the goTo dialog");
+}
+
+#[test]
+fn keytip_ora_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "ORA", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.autofitRowHeight"), "ORA must journal home.autofitRowHeight");
+}
+
+#[test]
+fn keytip_ore_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "ORE", false);
+    assert!(h.state().dialog.is_some(), "ORE must open the rowHeight dialog");
+}
+
+#[test]
+fn keytip_orh_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "ORH", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.hideRows"), "ORH must journal home.hideRows");
+}
+
+#[test]
+fn keytip_oru_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "ORU", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.unhideRows"), "ORU must journal home.unhideRows");
+}
+
+#[test]
+fn keytip_ocw_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "OCW", false);
+    assert!(h.state().dialog.is_some(), "OCW must open the columnWidth dialog");
+}
+
+#[test]
+fn keytip_och_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "OCH", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.hideColumns"), "OCH must journal home.hideColumns");
+}
+
+#[test]
+fn keytip_ocu_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "OCU", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.unhideColumns"), "OCU must journal home.unhideColumns");
+}
+
+#[test]
+fn keytip_ohr_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "OHR", false);
+    assert!(h.state().dialog.is_some(), "OHR must open the renameSheet dialog");
+}
+
+#[test]
+fn keytip_ohh_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "OHH", false);
+    assert!(h.state().message.is_some() || h.state().toast.is_some(), "OHH must invoke sheet.hide and surface its missing-params error");
+}
+
+#[test]
+fn keytip_ohu_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "OHU", false);
+    assert!(h.state().message.is_some() || h.state().toast.is_some(), "OHU must invoke sheet.unhide and surface its missing-params error");
+}
+
+#[test]
+fn keytip_oe_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "OE", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.formatCells"), "OE must journal home.formatCells");
+}
+
+#[test]
+fn keytip_od_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "OD", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "home.conditionalFormat"), "OD must journal home.conditionalFormat");
+}
+
+#[test]
+fn keytip_dff_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "DFF", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "data.filter"), "DFF must journal data.filter");
+}
+
+#[test]
+fn keytip_ds_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "DS", false);
+    assert!(h.state().dialog.is_some(), "DS must open the sort dialog");
+}
+
+#[test]
+fn keytip_dgg_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "DGG", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "data.group"), "DGG must journal data.group");
+}
+
+#[test]
+fn keytip_dgu_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "DGU", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "data.ungroup"), "DGU must journal data.ungroup");
+}
+
+#[test]
+fn keytip_dgs_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "DGS", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "data.showDetail"), "DGS must journal data.showDetail");
+}
+
+#[test]
+fn keytip_dgh_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "DGH", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "data.hideDetail"), "DGH must journal data.hideDetail");
+}
+
+#[test]
+fn keytip_dl_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "DL", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "data.validation"), "DL must journal data.validation");
+}
+
+#[test]
+fn keytip_dt_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "DT", false);
+    assert!(h.state().message.is_some() || h.state().toast.is_some(), "DT must invoke data.dataTable and surface its missing-params error");
+}
+
+#[test]
+fn keytip_vn_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "VN", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "view.normal"), "VN must journal view.normal");
+}
+
+#[test]
+fn keytip_vp_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "VP", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "view.pageBreakPreview"), "VP must journal view.pageBreakPreview");
+}
+
+#[test]
+fn keytip_vz_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "VZ", false);
+    assert!(h.state().dialog.is_some(), "VZ must open the zoom dialog");
+}
+
+#[test]
+fn keytip_to_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "TO", false);
+    assert!(h.state().backstage.is_some(), "TO must open the Options page");
+}
+
+#[test]
+fn keytip_tua_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "TUA", false);
+    assert!(h.state().session.journal.iter().any(|(id, _)| id == "formulas.removeArrows"), "TUA must journal formulas.removeArrows");
+}
+
+#[test]
+fn keytip_tud_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "TUD", false);
+    assert!(h.state().message.is_none() && h.state().toast.is_none(), "TUD must run formulas.traceDependents cleanly");
+}
+
+#[test]
+fn keytip_tut_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "TUT", false);
+    assert!(h.state().message.is_none() && h.state().toast.is_none(), "TUT must run formulas.tracePrecedents cleanly");
+}
+
+#[test]
+fn keytip_fu_() {
+    let mut h = harness(blank());
+    sequence(&mut h, "FU", false);
+    assert!(h.state().dialog.is_some(), "FU must open the pageSetup dialog");
+}
+
 #[test]
 fn keytip_q_() {
     let mut h = harness(blank());
@@ -2766,7 +3068,7 @@ fn keytip_q_() {
 
 #[test]
 fn generated_test_count_matches_the_table() {
-    const EXPECTED: usize = 367;
+    const EXPECTED: usize = 410;
     assert_eq!(gridcraft_ui_egui::keytips::keytip_table::SEQUENCES.len(), EXPECTED);
 }
 

crates/ui-egui/tests/it/legacy_keytips.rs

@@ -0,0 +1,112 @@
+//! Excel 2003 menu access keys that open a ribbon control rather than run a command (#941).
+
+use egui::os::OperatingSystem;
+use egui::{Event, Key, Modifiers};
+use egui_kittest::kittest::Queryable as _;
+use gridcraft_engine::Session;
+use gridcraft_ui_egui::SheetApp;
+use serde_json::json;
+
+fn press(h: &mut egui_kittest::Harness<'static, SheetApp>, key: Key) {
+    let ev = |pressed| Event::Key { key, physical_key: None, pressed, repeat: false, modifiers: Modifiers::NONE };
+    h.input_mut().events.extend([ev(true), Event::Text(key.name().to_ascii_lowercase()), ev(false)]);
+    h.run_steps(2);
+}
+
+#[test]
+fn alt_i_s_opens_the_symbol_gallery_and_leaves_the_cell_alone() {
+    // Insert > Symbol picks a symbol; running insert.symbol with no symbol set the active cell
+    // to its own text again, re-reading it (a Python cell lost its code, text could turn into a
+    // number). From the Home tab the keys show the Insert tab's gallery instead.
+    let mut s = Session::new();
+    s.new_workbook();
+    s.execute("cell.set", json!({"cell": "A1", "input": "'007"})).unwrap();
+    let mut h = crate::common::os_harness(s, OperatingSystem::Nix);
+    h.run_steps(4);
+    for key in [Key::F10, Key::I, Key::S] {
+        press(&mut h, key);
+    }
+    h.run_steps(4);
+    assert!(!h.state().session.journal.iter().any(|(id, _)| id == "insert.symbol"), "nothing is inserted until a symbol is picked");
+    assert_eq!(h.state().ui.ribbon_tab, "Insert");
+    assert!(h.query_by_label("€").is_some(), "the Symbol gallery is open");
+}
+
+#[test]
+fn alt_i_s_expands_a_collapsed_ribbon_on_the_insert_tab() {
+    // With the Insert tab already chosen but the ribbon collapsed, the gallery's control isn't
+    // drawn: the keys expand the ribbon first.
+    let mut s = Session::new();
+    s.new_workbook();
+    let mut h = crate::common::os_harness(s, OperatingSystem::Nix);
+    h.state_mut().run("ui.ribbonTab", json!({"tab": "Insert"})).unwrap();
+    h.state_mut().ui.ribbon_collapsed = true;
+    h.run_steps(4);
+    for key in [Key::F10, Key::I, Key::S] {
+        press(&mut h, key);
+    }
+    h.run_steps(4);
+    assert!(!h.state().ui.ribbon_collapsed);
+    assert!(h.query_by_label("€").is_some(), "the Symbol gallery is open");
+    assert!(!h.state().session.journal.iter().any(|(id, _)| id == "insert.symbol"));
+}
+
+#[test]
+fn a_waiting_key_tip_request_stays_with_its_window() {
+    // A request waiting for the frame that draws its control belongs to the window whose keys
+    // made it: another window drawn first must not take it.
+    let mut s = Session::new();
+    s.new_workbook();
+    let mut h = crate::common::os_harness(s, OperatingSystem::Nix);
+    h.run_steps(2);
+    let first = h.state().session.active_window().unwrap();
+    h.state_mut().run("view.newWindow", json!({})).unwrap();
+    let second = h.state().session.active_window().unwrap();
+    h.state_mut().show_window(second);
+    h.state_mut().ui.keytip_invoke_next = Some("insert.symbol");
+    h.state_mut().show_window(first);
+    assert_eq!(h.state().ui.keytip_invoke_next, None, "the first window doesn't see the second window's request");
+    h.state_mut().show_window(second);
+    assert_eq!(h.state().ui.keytip_invoke_next, Some("insert.symbol"));
+}
+
+#[test]
+fn a_hidden_window_drops_its_waiting_key_tip_request() {
+    // A hidden window isn't drawn, so its waiting request would fire when it was shown again,
+    // long after the keys: hiding the window drops it.
+    let mut s = Session::new();
+    s.new_workbook();
+    let mut h = crate::common::os_harness(s, OperatingSystem::Nix);
+    h.run_steps(2);
+    let first = h.state().session.active_window().unwrap();
+    h.state_mut().run("view.newWindow", json!({})).unwrap();
+    let second = h.state().session.active_window().unwrap();
+    h.state_mut().show_window(second);
+    h.state_mut().ui.keytip_invoke_next = Some("insert.symbol");
+    h.state_mut().run("view.hideWindow", json!({"window": second})).unwrap();
+    h.state_mut().show_window(first);
+    h.state_mut().run("view.unhideWindow", json!({"window": second})).unwrap();
+    h.state_mut().show_window(second);
+    assert_eq!(h.state().ui.keytip_invoke_next, None);
+}
+
+#[test]
+fn a_window_hidden_from_another_window_drops_its_parked_request() {
+    // Hidden while another window is in front (its request already parked), the window still
+    // loses the request, so showing it again doesn't open the control.
+    let mut s = Session::new();
+    s.new_workbook();
+    let mut h = crate::common::os_harness(s, OperatingSystem::Nix);
+    h.run_steps(2);
+    let first = h.state().session.active_window().unwrap();
+    h.state_mut().run("view.newWindow", json!({})).unwrap();
+    let second = h.state().session.active_window().unwrap();
+    h.state_mut().show_window(second);
+    h.state_mut().ui.keytip_invoke_next = Some("insert.symbol");
+    h.state_mut().enter_window(first);
+    h.state_mut().run("view.hideWindow", json!({"window": second})).unwrap();
+    h.state_mut().show_window(first);
+    h.state_mut().run("view.unhideWindow", json!({"window": second})).unwrap();
+    h.state_mut().show_window(second);
+    assert_eq!(h.state().ui.keytip_invoke_next, None);
+}

crates/ui-egui/tests/it/main.rs

@@ -7,6 +7,7 @@
 mod common;
 
 mod accounting_fill;
+mod active_row_highlight;
 mod advanced_filter;
 mod argument_names;
 mod autosave_persist;
@@ -58,11 +59,13 @@ mod hyperlink_ctrl_click;
 mod hyperlink_dialog;
 mod in_cell_editor_size;
 mod in_cell_editor_wrap;
+mod ink_render;
 mod insert_copied_cells;
 mod interaction;
 mod interface_scale;
 mod keyboard_shortcuts;
 mod keytips_generated;
+mod legacy_keytips;
 mod macro_editor;
 mod macros_ui;
 mod menu_hover;

crates/ui-egui/tests/it/paste_special_dialog.rs

@@ -54,3 +54,50 @@ fn paste_link_pastes_references_at_once() {
     assert_eq!(c1["value"], json!(2.0));
     assert!(c1["formula"].as_str().is_some_and(|f| f.contains("A1")), "{c1}");
 }
+
+fn press(h: &mut Harness, key: egui::Key) {
+    for pressed in [true, false] {
+        h.input_mut().events.push(egui::Event::Key { key, physical_key: Some(key), pressed, repeat: false, modifiers: egui::Modifiers::NONE });
+    }
+    h.run_steps(2);
+}
+
+fn value(h: &Harness, field: &str) -> serde_json::Value {
+    h.state().dialog.as_ref().and_then(|d| d.values.get(field).cloned()).unwrap_or_default()
+}
+
+#[test]
+fn every_option_has_its_excel_access_key() {
+    // #1482: only F, V, T, C and E worked.
+    let mut h = harness();
+    for (key, field, want) in [
+        (egui::Key::N, "what", json!("validation")),
+        (egui::Key::X, "what", json!("allExceptBorders")),
+        (egui::Key::W, "what", json!("columnWidths")),
+        (egui::Key::R, "what", json!("formulasAndNumberFormats")),
+        (egui::Key::U, "what", json!("valuesAndNumberFormats")),
+        (egui::Key::A, "what", json!("all")),
+        (egui::Key::D, "operation", json!("add")),
+        (egui::Key::S, "operation", json!("subtract")),
+        (egui::Key::I, "operation", json!("divide")),
+        (egui::Key::O, "operation", json!("none")),
+        (egui::Key::M, "operation", json!("multiply")),
+        (egui::Key::B, "skipBlanks", json!(true)),
+    ] {
+        press(&mut h, key);
+        assert_eq!(value(&h, field), want, "{key:?}");
+    }
+    press(&mut h, egui::Key::B);
+    assert_eq!(value(&h, "skipBlanks"), json!(false), "B flips Skip blanks back");
+    // V then Enter: values multiplied, as with the mouse.
+    press(&mut h, egui::Key::V);
+    press(&mut h, egui::Key::Enter);
+    assert!(h.state().dialog.is_none());
+    assert_eq!(cell(&mut h, "C1")["value"], json!(20.0));
+    // L is the Paste Link button: it pastes at once.
+    let mut h = harness();
+    press(&mut h, egui::Key::L);
+    h.run_steps(2);
+    assert!(h.state().dialog.is_none());
+    assert!(cell(&mut h, "C1")["formula"].as_str().is_some_and(|f| f.contains("A1")));
+}

crates/ui-egui/tests/it/ribbon_layout.rs

@@ -104,7 +104,10 @@ struct Clicks {
 #[test]
 /// The main button clicks once and the arrow twice separately; the tooltip keeps the platform shortcut, and the icon sits above the full-width label.
 fn big_split_button_separates_the_default_action_from_the_menu() {
-    let mut h = crate::common::builder().with_size(vec2(300.0, 200.0)).build_ui_state(
+    // The ribbon picks the shortcut by the OS egui reports, which kittest pins to Nix unless told:
+    // pin macOS, so the check is the same on every host (the other platforms' text is in
+    // `widgets::tests`).
+    let mut h = crate::common::builder().with_size(vec2(300.0, 200.0)).with_os(egui::os::OperatingSystem::Mac).build_ui_state(
         |ui, c: &mut Clicks| {
             let (main, arrow) = widgets::big_split_button(ui, Icon::Sum, "Auto\nSum", "AutoSum");
             c.main += u32::from(main.clicked());
@@ -125,8 +128,7 @@ fn big_split_button_separates_the_default_action_from_the_menu() {
     h.ctx.all_styles_mut(|s| s.interaction.tooltip_delay = 0.0);
     h.get_by_label("Auto Sum").hover();
     h.run_steps(6);
-    let shortcut = if cfg!(target_os = "macos") { "AutoSum (\u{2318}\u{21e7}T)" } else { "AutoSum (Alt+=)" };
-    assert!(h.query_by_value(shortcut).is_some(), "tooltip with the shortcut");
+    assert!(h.query_by_value("AutoSum (\u{2318}\u{21e7}T)").is_some(), "tooltip with the macOS shortcut");
     // The icon part sits above the label part, across the full width.
     let main = h.get_by_label("Auto Sum").rect();
     let arrow = h.get_by_label("Auto Sum options").rect();