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Type: required lam-alef is not an alternate in fonts that put it in liga (#394)

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Highlight Alternate Glyphs compares each glyph with required shaping
alone, which turns liga and calt off. Older Arabic fonts (such as the
legacy Arial of the Microsoft core fonts) put the mandatory lam-alef
ligature in liga instead of rlig, so every lam-alef was highlighted.
A lam + alef cluster (any alef form, marks allowed) is now never an
alternate candidate, whatever feature the font uses.

Adds a test font built in code (lam-alef under liga or rlig) and
host-independent regressions. Also two equivalent one-line repairs
strict Clippy needs on main: a nonminimal_bool in the Path Precision
Tools inspect check and is_none() in a gradient panel test.
This commit is contained in:
Don Omondi
2026-10-31 02:52:05 +07:00
committed by bflatastic
parent 0e7e41e786
commit c1971284ce
6 changed files with 104 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
crates/engine/src/cmd/addons/pathtools.rs
+1 -1
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@@ -355,7 +355,7 @@ fn inspect(s: &mut Session, p: &Value) -> Result<Value> {
let id = checked_id(s, p.get("id").unwrap_or(&Value::Null), C)?;
let (x, y) = (number_or(p, "x", f64::NAN, C)?, number_or(p, "y", f64::NAN, C)?);
let tolerance = number_or(p, "tolerance", 3.0, C)?;
if !(x.is_finite() && y.is_finite()) || !(tolerance >= 0.0 && tolerance.is_finite()) {
if !(x.is_finite() && y.is_finite() && tolerance >= 0.0 && tolerance.is_finite()) {
return Err(bad(C, "give `x` and `y` (and a `tolerance` of 0 or more)"));
}
let path = s.doc()?.doc.node(id).and_then(|n| n.path_data()).ok_or_else(|| bad(C, "`id` is not a path"))?;