Issue #272: Show in Explorer selects photos whose path has a space

Explorer only selects a file when the path after /select, is quoted. Rust's argument quoting wraps the whole "/select,C:\My Photos\a.jpg" switch in quotes as soon as the path has a space, so Explorer opened Documents. Build the switch as /select,"<path>" (backslashes, verbatim \\?\ and \\?\UNC\ prefixes stripped) and pass it with raw_arg on Windows. The library folder tree's context menu now shows the platform's reveal label too, and the Russian catalog gains "Show in Explorer" and "Show in File Manager".

apps/lightcraft/src/main.rs

@@ -281,6 +281,38 @@ fn windows_open_url_command(url: &str) -> std::process::Command {
     c
 }
 
+/// Explorer's `/select,<path>` switch (issue #272). Explorer parses its own command line and only
+/// selects the file when the path after the comma is quoted (`/select,"C:\My Photos\a.jpg"`),
+/// spelled with backslashes and free of the verbatim prefix (`\\?\`, `\\?\UNC\`) that
+/// `canonicalize` adds; given anything else it opens Documents. Windows file names can't contain
+/// `"`, so the quotes are always safe.
+fn explorer_select_arg(path: &str) -> String {
+    let path = path.replace('/', "\\");
+    let path = match path.strip_prefix(r"\\?\UNC\") {
+        Some(unc) => format!(r"\\{unc}"),
+        None => path.strip_prefix(r"\\?\").unwrap_or(path.as_str()).to_string(),
+    };
+    format!("/select,\"{path}\"")
+}
+
+/// `explorer /select,"<path>"`. Rust's own argument quoting wraps the whole switch in quotes
+/// (`"/select,C:\My Photos\a.jpg"`) whenever the path has a space, which Explorer doesn't
+/// recognise, so on Windows the switch goes on the command line exactly as built.
+fn explorer_select_command(path: &str) -> std::process::Command {
+    let mut c = std::process::Command::new("explorer");
+    let arg = explorer_select_arg(path);
+    #[cfg(windows)]
+    {
+        use std::os::windows::process::CommandExt;
+        c.raw_arg(arg);
+    }
+    #[cfg(not(windows))]
+    {
+        c.arg(arg);
+    }
+    c
+}
+
 /// The platform services; `ctx` repaints when a file dialog closes, and `log_file` is
 /// for Help ▸ Open Log Folder.
 fn services(ctx: egui::Context, log_file: Option<&std::path::Path>) -> Services {
@@ -368,8 +400,7 @@ fn services(ctx: egui::Context, log_file: Option<&std::path::Path>) -> Services
             let status = if cfg!(target_os = "macos") {
                 std::process::Command::new("open").args(["-R", path]).status()
             } else if cfg!(target_os = "windows") {
-                let win_path = path.replace('/', "\\");
-                std::process::Command::new("explorer").arg(format!("/select,{win_path}")).status()
+                explorer_select_command(path).status()
             } else {
                 let dir = std::path::Path::new(path).parent().map(|d| d.to_string_lossy().to_string()).unwrap_or_else(|| ".".into());
                 std::process::Command::new("xdg-open").arg(dir).status()
@@ -909,6 +940,21 @@ mod tests {
         assert_eq!(args, ["url.dll,FileProtocolHandler", url]);
     }
 
+    /// Issue #272: Explorer gets the file to select quoted after `/select,`, with backslashes and
+    /// without the verbatim prefix, even when the path has spaces (else it opens Documents).
+    #[test]
+    fn explorer_select_quotes_the_path() {
+        assert_eq!(explorer_select_arg(r"C:\Users\Me\My Photos\IMG 1.jpg"), r#"/select,"C:\Users\Me\My Photos\IMG 1.jpg""#);
+        assert_eq!(explorer_select_arg("D:/Example/Photos/IMG_0001.CR3"), r#"/select,"D:\Example\Photos\IMG_0001.CR3""#);
+        assert_eq!(explorer_select_arg(r"\\server\share\My Photos\a.jpg"), r#"/select,"\\server\share\My Photos\a.jpg""#);
+        assert_eq!(explorer_select_arg(r"\\?\D:\My Photos\a.jpg"), r#"/select,"D:\My Photos\a.jpg""#);
+        assert_eq!(explorer_select_arg(r"\\?\UNC\server\share\a.jpg"), r#"/select,"\\server\share\a.jpg""#);
+        let c = explorer_select_command(r"C:\My Photos\a.jpg");
+        assert_eq!(c.get_program(), "explorer");
+        let args: Vec<&std::ffi::OsStr> = c.get_args().collect();
+        assert_eq!(args, [r#"/select,"C:\My Photos\a.jpg""#]);
+    }
+
     #[test]
     fn a_control_port_that_is_not_a_number_is_ignored() {
         assert_eq!(control_port_from("--control", Some("7980".into())), Some(7980));

crates/ui-egui/locales/ru.json

@@ -1103,6 +1103,8 @@
   "Show destination gamut warning": "Показывать предупреждение о выходе за гамму устройства вывода",
   "Show display gamut warning": "Показывать предупреждение о выходе за гамму дисплея",
   "Show file names": "Показывать имена файлов",
+  "Show in Explorer": "Показать в Проводнике",
+  "Show in File Manager": "Показать в файловом менеджере",
   "Show in Finder": "Показать в Finder",
   "Show on Map": "Показать на карте",
   "Show overlay (O)": "Показать наложение (O)",

crates/ui-egui/src/panels/left.rs

@@ -1246,7 +1246,7 @@ fn folder_menu_for_library(app: &mut LightcraftApp, resp: &egui::Response, n: &F
             ui.close();
         }
         if app.services.reveal.is_some()
-            && ui.button(crate::i18n::tr("Show in Finder")).clicked()
+            && ui.button(crate::i18n::tr(crate::menus::reveal_label())).clicked()
             && let Some(f) = app.services.reveal.as_mut()
         {
             let _ = f(path);