fix(engine): select files correctly in Windows Explorer (#8518)

crates/engine/src/file_cmds/tests.rs

@@ -1416,6 +1416,18 @@ fn reveal_in_finder_reveals_the_documents_saved_path() {
     assert_eq!(r["args"], json!(args));
 }
 
+#[cfg(windows)]
+#[test]
+fn reveal_in_finder_on_windows_passes_the_clicked_tabs_saved_path() {
+    let mut s = session(8, 8, 8);
+    s.active_mut().unwrap().path = Some("C:/项目 图片/海报 🖼.png".into());
+    s.execute("file.new", json!({"width": 8, "height": 8, "name": "other"})).unwrap();
+
+    let r = s.execute("file.revealInFinder", json!({"document": 0, "dryRun": true})).unwrap();
+    assert_eq!(r["program"], "explorer");
+    assert_eq!(r["args"], json!(["/select,", r"C:\项目 图片\海报 🖼.png"]));
+}
+
 /// "Include All Subfolders" (AUTO-219-5, #3753): Batch and Image Processor take the images in
 /// subfolders too, each result keeping its subfolder under the output folder (so same-named files
 /// don't collide), and skip the output folder when it sits inside the input folder.

crates/engine/src/layer_menu_cmds.rs

@@ -421,7 +421,8 @@ fn reveal_command_on(os: &str, path: &str) -> Result<(&'static str, Vec<String>)
         // Explorer splits `/select,` arguments at commas and reads quotes itself, so such a path
         // would select something else.
         "windows" if path.contains([',', '"']) => Err(other(format!("{path} can't be shown in Explorer: its path contains a comma or a quotation mark"))),
-        "windows" => Ok(("explorer", vec![format!("/select,{path}")])),
+        // Keep the switch outside the path's quotes: Explorer parses its own command line.
+        "windows" => Ok(("explorer", vec!["/select,".into(), path.replace('/', "\\")])),
         _ => {
             let parent = std::path::Path::new(path).parent().map_or_else(|| ".".to_string(), |p| p.to_string_lossy().into_owned());
             Ok(("xdg-open", vec![parent]))

crates/engine/src/layer_menu_cmds/tests.rs

@@ -541,12 +541,26 @@ fn reveal_follows_linked_paths_like_the_link_and_passes_paths_as_paths() {
     s.execute("file.revealInFinder", json!({"dryRun": true})).unwrap();
 
     assert_eq!(reveal_command_on("macos", "-a.png").unwrap(), ("open", vec!["-R".to_string(), "--".into(), "-a.png".into()]));
-    assert_eq!(reveal_command_on("windows", r"C:\pics\a.png").unwrap(), ("explorer", vec![r"/select,C:\pics\a.png".to_string()]));
+    assert_eq!(reveal_command_on("windows", r"C:\pics\a.png").unwrap(), ("explorer", vec!["/select,".to_string(), r"C:\pics\a.png".to_string()]));
     for path in [r"C:\pics\a,b.png", r#"C:\pics\a".png"#] {
         assert!(reveal_command_on("windows", path).is_err(), "{path}");
     }
 }
 
+/// Explorer parses `/select,` itself: it must remain outside the quoted file path.
+#[test]
+fn reveal_on_windows_keeps_the_select_switch_separate_from_the_path() {
+    for (path, expected) in [
+        (r"C:\my pictures\a file.png", r"C:\my pictures\a file.png"),
+        ("C:/my pictures/a file.png", r"C:\my pictures\a file.png"),
+        (r"C:\my pictures/a file.png", r"C:\my pictures\a file.png"),
+        ("C:/项目 图片/海报 🖼.png", r"C:\项目 图片\海报 🖼.png"),
+        ("//server/share/my pictures/a file.png", r"\\server\share\my pictures\a file.png"),
+    ] {
+        assert_eq!(reveal_command_on("windows", path).unwrap(), ("explorer", vec!["/select,".to_string(), expected.to_string()]), "{path}");
+    }
+}
+
 /// `xdg-open` launches a file it is given, so Reveal hands it the link's folder only when that is a
 /// folder: a link stored as `tool.jar/a.png` names a file, not a folder, as its parent.
 #[test]