fix(navigation): show usages on a declaration a plugin's index links elsewhere

A plugin's document index can link a declaration's name elsewhere: MyBatis Duo links a mapper method to its XML statement. Go to Declaration followed such a link at once, in the editor and in the host, so ⌘B on the method jumped to the XML instead of showing its usages as it does on any declaration (and did for plugins that answer through a definition provider). When the syntax tree puts the caret on a declaration's name, the link is no longer followed directly: the language server's answer comes along and the usages show, the plugin's target among them. Elsewhere plugin links are followed as before, without waiting for the language server.

Fixes #3207

crates/ide-host/src/ops/lsp.rs

@@ -309,9 +309,13 @@ pub async fn lsp_signature_help(host: &Host, window: &str, doc: DocId, pos: Pos)
 
 pub async fn lsp_goto(host: &Host, window: &str, doc: DocId, pos: Pos, kind: GotoKind) -> IdeResult<Vec<Location>> {
     let target = position_document(host, window, doc, pos).await?;
+    // ⌘B on a declaration shows its usages, also when a plugin's index links the name elsewhere
+    // (a MyBatis mapper method to its XML statement): the server's answer comes along for the
+    // editor to tell.
     if target == doc
         && kind == GotoKind::Definition
         && let Some(plugins) = crate::plugins::editor_plugin_host()
+        && !on_declaration_name(host, window, doc, pos).await
     {
         let project = host.project(window)?;
         // A notebook cell is a language-server document only: no plugin navigates in it.
@@ -352,6 +356,30 @@ pub async fn lsp_goto(host: &Host, window: &str, doc: DocId, pos: Pos, kind: Got
     definition_targets(result, found, in_string)
 }
 
+/// Whether the syntax tree puts the identifier at `pos` as a declaration's name (`int f()`'s `f`).
+async fn on_declaration_name(host: &Host, window: &str, doc: DocId, pos: Pos) -> bool {
+    let Ok(project) = host.project(window) else { return false };
+    blocking(move || {
+        let snap = project.documents.text_snapshot(doc)?;
+        if snap.large {
+            return Ok(false);
+        }
+        let s = ide_syntax::Snapshot::doc(doc, snap.version, &snap.language, &snap.text);
+        let cancel = ide_core::CancellationToken::new();
+        let Ok(Some(at)) = project.structure.node_at(&s, Range::new(pos, pos), &cancel) else { return Ok(false) };
+        Ok(is_declaration_name(&at))
+    })
+    .await
+    .unwrap_or(false)
+}
+
+fn is_declaration_name(at: &ide_syntax::NodeAt) -> bool {
+    at.node.field.as_deref() == Some("name")
+        && at.ancestors.first().is_some_and(|parent| {
+            ["declaration", "definition", "declarator"].iter().any(|kind| parent.kind.ends_with(kind))
+        })
+}
+
 async fn in_string_literal(host: &Host, window: &str, doc: DocId, pos: Pos) -> bool {
     let Ok(project) = host.project(window) else { return false };
     blocking(move || {
@@ -2136,6 +2164,24 @@ mod tests {
         assert_eq!(paths(definition_targets(Ok(vec![helper, guess]), Vec::new(), false)), ["/p/app/helpers.php"]);
     }
 
+    #[test]
+    fn declaration_names_are_told_apart_from_uses() {
+        let syntax = std::sync::Arc::new(ide_language::Syntax::new());
+        let structure = ide_syntax::StructureService::new(std::sync::Arc::new(ide_language::SyntaxCache::new(syntax)));
+        let java = ide_core::LanguageId::new("java");
+        let text = "interface ShareMapper {\n    int batchCancel(List<Long> ids);\n}\nclass S { int f(ShareMapper m) { return m.batchCancel(null); } }\n";
+        let snap = ide_syntax::Snapshot::text(&java, text);
+        let cancel = ide_core::CancellationToken::new();
+        let at = |line, col| {
+            let pos = Pos::new(line, col);
+            is_declaration_name(&structure.node_at(&snap, Range::new(pos, pos), &cancel).unwrap().unwrap())
+        };
+        assert!(at(1, 10), "the mapper method's name");
+        assert!(at(0, 12), "the interface's name");
+        assert!(!at(3, 45), "a call of the method");
+        assert!(!at(1, 4), "its return type");
+    }
+
     #[test]
     fn positions_inside_string_literals_are_told_apart() {
         let syntax = std::sync::Arc::new(ide_language::Syntax::new());

crates/ide-host/tests/plugins.rs

@@ -2993,13 +2993,18 @@ fn official_csv_editor_edits_the_shared_document() {
     f.host.view_event("openidea.csv-editor", "table", cell, inv.clone()).unwrap();
     assert_eq!(f.workspace.text("people.csv"), "name,city\nAda,\"Paris, FR\"\nBob,Oslo\n");
 
+    // Add Row appends, also on wasm32 (where its row index used to wrap to the header).
+    let add = ide_plugin::ViewEvent::Button { id: "add-row".into() };
+    f.host.view_event("openidea.csv-editor", "table", add, inv.clone()).unwrap();
+    assert_eq!(f.workspace.text("people.csv"), "name,city\nAda,\"Paris, FR\"\nBob,Oslo\n,\n");
+
     // Settings: without a header row every record is a row.
     let mut values = serde_json::Map::new();
     values.insert("firstRowIsHeader".into(), serde_json::Value::Bool(false));
     f.workspace.settings.lock().insert("openidea.csv-editor".into(), values);
     let view = f.host.render_view("openidea.csv-editor", "table", None, inv.clone()).unwrap();
     let ide_plugin::ViewBody::Table(t) = &view.body else { panic!("{view:?}") };
-    assert_eq!((t.columns[0].as_str(), t.total_rows), ("Column 1", 3));
+    assert_eq!((t.columns[0].as_str(), t.total_rows), ("Column 1", 4));
 
     // Undeclared views are refused before any code runs.
     let err = f.host.render_view("openidea.csv-editor", "other", None, inv).unwrap_err();

crates/ide-jsonrpc/src/lib.rs

@@ -223,6 +223,10 @@ pub trait Handler: Send + Sync + 'static {
 
     /// Called once the response to a `method` request is queued: what it sends follows the response.
     fn after_response(&self, _method: &str) {}
+
+    /// Adjusts every message from the peer (responses included) before it is dispatched, e.g.
+    /// to repair values the peer spells more loosely than the types that read them accept.
+    fn normalize_incoming(&self, _message: &mut Value) {}
 }
 
 /// A [`Handler`] that ignores notifications and rejects requests.
@@ -585,9 +589,10 @@ impl Peer {
                 .expect("spawn jsonrpc notification thread");
         }
 
-        // Reader: parses and dispatches; never runs handler code itself.
+        // Reader: parses and dispatches; runs no handler code beyond `normalize_incoming`.
         {
             let inner = inner.clone();
+            let handler = handler.clone();
             tokio::spawn(async move {
                 let mut reader = BufReader::new(reader);
                 let seen_message = AtomicBool::new(false);
@@ -610,7 +615,7 @@ impl Peer {
                     match msg {
                         Ok(Some(body)) => {
                             seen_message.store(true, Ordering::Relaxed);
-                            dispatch(&inner, &notif_tx, &body);
+                            dispatch(&inner, &*handler, &notif_tx, &body);
                         }
                         Ok(None) => break,
                         Err(e) => {
@@ -783,15 +788,16 @@ async fn handle_request(inner: Arc<Inner>, handler: Arc<dyn Handler>, id: Value,
     }
 }
 
-fn dispatch(inner: &Arc<Inner>, notif_tx: &std::sync::mpsc::Sender<Incoming>, body: &[u8]) {
+fn dispatch(inner: &Arc<Inner>, handler: &dyn Handler, notif_tx: &std::sync::mpsc::Sender<Incoming>, body: &[u8]) {
     tracing::trace!(target: "ide_jsonrpc::wire", "<-- {}", String::from_utf8_lossy(body));
-    let msg: Value = match serde_json::from_slice(body) {
+    let mut msg: Value = match serde_json::from_slice(body) {
         Ok(v) => v,
         Err(e) => {
             tracing::warn!("jsonrpc: unparsable message: {e}");
             return;
         }
     };
+    handler.normalize_incoming(&mut msg);
     let Value::Object(mut obj) = msg else {
         tracing::warn!("jsonrpc: ignoring non-object message");
         return;

crates/ide-jsonrpc/src/tests.rs

@@ -541,3 +541,29 @@ async fn output_before_the_handshake_is_reported_not_dropped() {
     assert!(lines.iter().any(|l| l == "python: not found"), "{lines:?}");
     assert!(lines.iter().any(|l| l.ends_with(". . .") && l.len() > 6), "{lines:?}");
 }
+
+#[tokio::test(flavor = "multi_thread")]
+async fn incoming_messages_are_normalized_before_dispatch() {
+    struct Server;
+    impl Handler for Server {
+        fn on_notification(&self, _: &str, _: Value) {}
+        fn on_request(&self, _: &str, params: Value) -> Result<Value, (i64, String)> {
+            Ok(params)
+        }
+    }
+    struct Client;
+    impl Handler for Client {
+        fn on_notification(&self, _: &str, _: Value) {}
+        fn on_request(&self, _: &str, _: Value) -> Result<Value, (i64, String)> {
+            Err((codes::METHOD_NOT_FOUND, "no".into()))
+        }
+        fn normalize_incoming(&self, message: &mut Value) {
+            if let Some(result) = message.get_mut("result") {
+                *result = json!("normalized");
+            }
+        }
+    }
+    let (client, _server) = pair(Arc::new(Client), Arc::new(Server));
+    let v: Value = client.request("echo", "raw", None).await.unwrap();
+    assert_eq!(v, json!("normalized"));
+}

crates/ide-lsp/src/handler.rs

@@ -391,6 +391,10 @@ fn tsserver_ran_out_of_memory(text: &str) -> bool {
 }
 
 impl Handler for ClientHandler {
+    fn normalize_incoming(&self, message: &mut Value) {
+        crate::uri::encode_loose_file_uris(message);
+    }
+
     fn on_notification(&self, method: &str, params: Value) {
         let Some(mgr) = self.mgr.upgrade() else { return };
         match method {

crates/ide-lsp/src/uri.rs

@@ -1,6 +1,8 @@
 //! `file://` URI ⇄ path conversion (RFC 8089, VS Code-compatible encoding).
 
 use percent_encoding::{AsciiSet, CONTROLS, percent_decode_str, utf8_percent_encode};
+use serde_json::Value;
+use std::borrow::Cow;
 use std::path::{Path, PathBuf};
 use std::str::FromStr;
 
@@ -22,6 +24,53 @@ const PATH: &AsciiSet = &CONTROLS
     .add(b'|')
     .add(b'}');
 
+/// What RFC 3986 doesn't allow in a URI and a server may still leave unencoded in a `file:`
+/// URI (non-ASCII is always encoded); `%` stays, it starts the escapes already there.
+const LOOSE: &AsciiSet = &CONTROLS
+    .add(b' ')
+    .add(b'"')
+    .add(b'<')
+    .add(b'>')
+    .add(b'[')
+    .add(b'\\')
+    .add(b']')
+    .add(b'^')
+    .add(b'`')
+    .add(b'{')
+    .add(b'|')
+    .add(b'}');
+
+/// Percent-encodes the characters URIs don't allow in every `file:` URI in `value`, string
+/// values and object keys alike (a workspace edit's `changes`). Eclipse's jdtls sends a path
+/// as is (`file:///H:/项目/…`), which `lsp_types::Uri` rejects, failing the whole response.
+pub fn encode_loose_file_uris(value: &mut Value) {
+    match value {
+        Value::String(s) => {
+            if let Some(encoded) = encode_loose(s) {
+                *s = encoded;
+            }
+        }
+        Value::Array(items) => items.iter_mut().for_each(encode_loose_file_uris),
+        Value::Object(map) => {
+            if map.keys().any(|k| encode_loose(k).is_some()) {
+                *map = std::mem::take(map).into_iter().map(|(k, v)| (encode_loose(&k).unwrap_or(k), v)).collect();
+            }
+            map.values_mut().for_each(encode_loose_file_uris);
+        }
+        _ => {}
+    }
+}
+
+fn encode_loose(s: &str) -> Option<String> {
+    if !s.get(..5).is_some_and(|scheme| scheme.eq_ignore_ascii_case("file:")) {
+        return None;
+    }
+    match Cow::from(utf8_percent_encode(s, LOOSE)) {
+        Cow::Owned(encoded) => Some(encoded),
+        Cow::Borrowed(_) => None,
+    }
+}
+
 pub fn path_to_uri_string(path: &Path) -> String {
     let s = if cfg!(windows) {
         dunce::simplified(path).to_string_lossy().replace('\\', "/")
@@ -95,6 +144,28 @@ pub use ide_core::text::is_virtual_uri;
 mod tests {
     use super::*;
 
+    #[test]
+    fn file_uris_a_server_leaves_unencoded_are_encoded() {
+        // jdtls on a project under a Chinese folder (`java.usages` / references response).
+        let mut v = serde_json::json!({ "result": [{
+            "location": { "uri": "file:///H:/项目/online disk/A.java", "range": { "start": { "line": 1, "character": 2 }, "end": { "line": 1, "character": 3 } } },
+            "kind": "unknown"
+        }], "edit": { "changes": { "file:///tmp/目录/b.java": [] } }, "text": "项目" });
+        let raw = v["result"][0]["location"].clone();
+        assert!(serde_json::from_value::<lsp_types::Location>(raw).is_err(), "lsp-types rejects it as sent");
+        encode_loose_file_uris(&mut v);
+        let uri = v["result"][0]["location"]["uri"].as_str().unwrap();
+        assert_eq!(uri, "file:///H:/%E9%A1%B9%E7%9B%AE/online%20disk/A.java");
+        let location: lsp_types::Location = serde_json::from_value(v["result"][0]["location"].clone()).unwrap();
+        assert!(uri_to_path(location.uri.as_str()).unwrap().ends_with("项目/online disk/A.java"));
+        assert!(v["edit"]["changes"].get("file:///tmp/%E7%9B%AE%E5%BD%95/b.java").is_some());
+        assert_eq!(v["text"], "项目", "only file: URIs change");
+        // Already encoded: untouched.
+        let mut encoded = serde_json::json!("file:///a%20b/%E9%A1%B9.java");
+        encode_loose_file_uris(&mut encoded);
+        assert_eq!(encoded, "file:///a%20b/%E9%A1%B9.java");
+    }
+
     #[cfg(unix)]
     #[test]
     fn round_trip() {

crates/ide-search/benches/search.rs

@@ -65,5 +65,26 @@ fn bench(c: &mut Criterion) {
     g.finish();
 }
 
-criterion_group!(benches, bench);
+// No .ignore file: the query's subtree masks must prevent traversal themselves.
+fn excluded_subtrees(c: &mut Criterion) {
+    let dir = tempfile::tempdir().unwrap();
+    for module in 0..100 {
+        let root = dir.path().join(format!("modules/m{module}"));
+        std::fs::create_dir_all(root.join("src")).unwrap();
+        std::fs::write(root.join("src/main.go"), "needle").unwrap();
+        for dependency in 0..50 {
+            let dep = root.join(format!("node_modules/dep{dependency}/lib"));
+            std::fs::create_dir_all(&dep).unwrap();
+            std::fs::write(dep.join("index.js"), "needle").unwrap();
+        }
+    }
+    let q = SearchQuery { exclude: vec!["**/node_modules/**".into()], ..query("needle", false) };
+    assert_eq!(run(dir.path(), &q), 100);
+    let mut group = c.benchmark_group("search_excluded_subtrees");
+    group.sample_size(15);
+    group.bench_function("5k_dependencies", |b| b.iter(|| black_box(run(dir.path(), &q))));
+    group.finish();
+}
+
+criterion_group!(benches, bench, excluded_subtrees);
 criterion_main!(benches);

crates/ide-search/src/engine.rs

@@ -143,18 +143,22 @@ pub(crate) fn run(req: Request<'_>) -> IdeResult<SearchSummary> {
     }
 
     if !ctx.ctl.should_stop() {
-        walk_files(&on_disk, || {
-            let mut searcher = searcher_builder.build();
-            let matcher = matcher.clone();
-            let ctx = &ctx;
-            Box::new(move |path| {
-                if ctx.ctl.should_stop() {
-                    return WalkState::Quit;
-                }
-                ctx.search_file(path, &matcher, &mut searcher);
-                if ctx.ctl.stopped() { WalkState::Quit } else { WalkState::Continue }
-            })
-        });
+        walk_files(
+            &on_disk,
+            &|path| ctx.mask.has_directory_exclusions() && ctx.mask.excludes_dir(&rel_path(ctx.root, path)),
+            || {
+                let mut searcher = searcher_builder.build();
+                let matcher = matcher.clone();
+                let ctx = &ctx;
+                Box::new(move |path| {
+                    if ctx.ctl.should_stop() {
+                        return WalkState::Quit;
+                    }
+                    ctx.search_file(path, &matcher, &mut searcher);
+                    if ctx.ctl.stopped() { WalkState::Quit } else { WalkState::Continue }
+                })
+            },
+        );
     }
 
     let cancelled = ctx.ctl.cancelled.load(Relaxed) || req.cancel.is_cancelled();
@@ -176,7 +180,11 @@ pub(crate) type VisitFile<'s> = Box<dyn FnMut(&Path) -> WalkState + Send + 's>;
 /// them, while ignored files elsewhere (`.env`) and hidden files and folders
 /// (`.github`, `.eslintrc`) are visited. `.git`, symlinks and archives (jar,
 /// zip: browsed, not searched) are never visited.
-pub(crate) fn walk_files<'s>(roots: &[PathBuf], mut visitor: impl FnMut() -> VisitFile<'s> + Send) {
+pub(crate) fn walk_files<'s>(
+    roots: &[PathBuf],
+    skip_dir: &'s (dyn Fn(&Path) -> bool + Sync),
+    mut visitor: impl FnMut() -> VisitFile<'s> + Send,
+) {
     let Some((first, rest)) = roots.split_first() else { return };
     let mut walk = WalkBuilder::new(first);
     for path in rest {
@@ -204,6 +212,9 @@ pub(crate) fn walk_files<'s>(roots: &[PathBuf], mut visitor: impl FnMut() -> Vis
             };
             let Some(file_type) = entry.file_type() else { return WalkState::Continue };
             if file_type.is_dir() {
+                if skip_dir(entry.path()) {
+                    return WalkState::Skip;
+                }
                 // The walker drops ignored files unseen, so the files of every walked
                 // directory come from listing it; the walker only picks the directories.
                 let Ok(children) = std::fs::read_dir(entry.path()) else { return WalkState::Continue };
@@ -595,3 +606,39 @@ mod tests {
         }
     }
 }
+
+#[cfg(test)]
+mod walk_tests {
+    use super::*;
+    use std::sync::Mutex;
+
+    #[test]
+    fn excluded_subtree_is_not_visited() {
+        let dir = tempfile::tempdir().unwrap();
+        let root = dir.path();
+        std::fs::create_dir_all(root.join("edge/device/build/deep")).unwrap();
+        std::fs::create_dir_all(root.join("edge/device/src")).unwrap();
+        std::fs::write(root.join("edge/device/build/deep/generated.go"), "hit").unwrap();
+        std::fs::write(root.join("edge/device/src/main.go"), "hit").unwrap();
+        let mask = FileMask::new(&[], &["**/build/**".into()]).unwrap();
+        let seen = Mutex::new(Vec::new());
+        walk_files(&[root.to_path_buf()], &|path| mask.excludes_dir(&rel_path(root, path)), || {
+            let seen = &seen;
+            Box::new(move |path| {
+                // No file-level mask here: a visit means the walker entered the subtree.
+                seen.lock().unwrap().push(rel_path(root, path));
+                WalkState::Continue
+            })
+        });
+        assert_eq!(*seen.lock().unwrap(), ["edge/device/src/main.go"]);
+        seen.lock().unwrap().clear();
+        walk_files(&[root.join("edge/device/build/deep")], &|path| mask.excludes_dir(&rel_path(root, path)), || {
+            let seen = &seen;
+            Box::new(move |path| {
+                seen.lock().unwrap().push(rel_path(root, path));
+                WalkState::Continue
+            })
+        });
+        assert!(seen.lock().unwrap().is_empty());
+    }
+}

crates/ide-search/src/files.rs

@@ -43,7 +43,7 @@ pub fn scope_files(
             on_disk.push(path);
         }
     }
-    walk_files(&on_disk, || {
+    walk_files(&on_disk, &|path| mask.has_directory_exclusions() && mask.excludes_dir(&rel_path(root, path)), || {
         let found = &found;
         let keep = &keep;
         Box::new(move |path| {

crates/ide-search/src/mask.rs

@@ -12,6 +12,7 @@ pub struct FileMask {
     exclude_name: GlobSet,
     exclude_path: GlobSet,
     has_include: bool,
+    exclude_dirs: GlobSet,
 }
 
 impl FileMask {
@@ -20,6 +21,7 @@ impl FileMask {
     pub fn new(include: &[String], exclude: &[String]) -> IdeResult<Self> {
         let mut inc = Lists::default();
         let mut exc = Lists::default();
+        let mut dirs = Lists::default();
         for (entries, is_include_list) in [(include, true), (exclude, false)] {
             for mask in entries.iter().flat_map(|e| e.split(',')) {
                 let mask = mask.trim();
@@ -32,10 +34,20 @@ impl FileMask {
                 }
                 let target = if is_include_list != negated { &mut inc } else { &mut exc };
                 target.push(mask)?;
+                // Only a trailing /** guarantees that every descendant is excluded.
+                // File masks and inclusion masks cannot safely prune a directory.
+                if is_include_list == negated
+                    && !mask.contains('\\')
+                    && let Some(prefix) = mask.strip_suffix("/**")
+                    && !prefix.is_empty()
+                {
+                    dirs.push(&format!("{prefix}/"))?;
+                }
             }
         }
         Ok(Self {
             has_include: inc.count > 0,
+            exclude_dirs: dirs.path.build().map_err(glob_error)?,
             include_name: inc.name.build().map_err(glob_error)?,
             include_path: inc.path.build().map_err(glob_error)?,
             exclude_name: exc.name.build().map_err(glob_error)?,
@@ -43,6 +55,20 @@ impl FileMask {
         })
     }
 
+    pub(crate) fn has_directory_exclusions(&self) -> bool {
+        !self.exclude_dirs.is_empty()
+    }
+
+    /// Whether an exclusion covers every file below this directory. This is
+    /// deliberately conservative; ordinary masks still filter individual files.
+    pub(crate) fn excludes_dir(&self, rel_path: &str) -> bool {
+        if self.exclude_dirs.is_empty() {
+            return false;
+        }
+        let path = format!("{rel_path}/");
+        path.match_indices('/').any(|(i, _)| self.exclude_dirs.is_match(&path[..=i]))
+    }
+
     /// `rel_path` uses `/` separators.
     pub fn matches(&self, rel_path: &str) -> bool {
         let name = rel_path.rsplit('/').next().unwrap_or(rel_path);
@@ -133,6 +159,60 @@ mod tests {
         assert!(!m.matches("Cargo.lock"));
     }
 
+    #[test]
+    fn only_complete_subtree_exclusions_prune_directories() {
+        let m = mask(&["*.go"], &["**/node_modules/**", "edge/device/build/**"]);
+        for dir in [
+            "node_modules",
+            "edge/node_modules",
+            "edge/device/build",
+            "edge/device/build/deep",
+            "edge/node_modules/pkg/lib",
+        ] {
+            assert!(m.excludes_dir(dir), "{dir}");
+        }
+        for dir in ["edge", "edge/device", "internal/build", "src.go"] {
+            assert!(!m.excludes_dir(dir), "{dir}");
+        }
+        for pattern in ["*.go", "build", "build/*", "build/", "build/**/*.go"] {
+            assert!(!mask(&[], &[pattern]).excludes_dir("build"), "{pattern}");
+        }
+    }
+
+    #[test]
+    fn directory_pruning_preserves_mask_negation_semantics() {
+        assert!(mask(&["!vendor/**"], &[]).excludes_dir("vendor"));
+        assert!(!mask(&[], &["!vendor/**"]).excludes_dir("vendor"));
+        // Exclusions already win over inclusions in FileMask, irrespective of order.
+        let m = mask(&["vendor/keep.go"], &["vendor/**"]);
+        assert!(m.excludes_dir("vendor"));
+        assert!(!m.matches("vendor/keep.go"));
+        assert!(mask(&[], &["./vendor/**, **/node_modules/**"]).excludes_dir("vendor"));
+    }
+
+    #[test]
+    fn directory_pruning_uses_the_same_case_rules_as_files() {
+        let m = mask(&[], &["Vendor/**"]);
+        let case_insensitive = cfg!(any(target_os = "macos", target_os = "windows"));
+        assert_eq!(m.excludes_dir("vendor"), case_insensitive);
+        assert_eq!(m.matches("vendor/a.go"), !case_insensitive);
+    }
+
+    #[test]
+    fn pruned_directory_descendants_are_already_excluded() {
+        for pattern in ["vendor/**", "**/build/**", "modules/*/build/**", "[ab]/**", "**/**"] {
+            let m = mask(&[], &[pattern]);
+            for dir in ["vendor", "vendor/deep", "build", "a", "modules/a/build", "modules/a/src", "x/build/y"] {
+                if m.excludes_dir(dir) {
+                    for file in ["main.go", "deep/lib.go", ".hidden/config", "node_modules/a.js"] {
+                        assert!(!m.matches(&format!("{dir}/{file}")), "{pattern}: {dir}/{file}");
+                    }
+                }
+            }
+        }
+        assert!(!mask(&[], &[r"escaped\*/**"]).excludes_dir("escaped*"));
+    }
+
     #[test]
     fn invalid_glob() {
         let err = FileMask::new(&["a[".into()], &[]).unwrap_err();

crates/ide-search/tests/search.rs

@@ -797,3 +797,42 @@ fn search_context_reads_non_utf8_files() {
     let p = project(&[("a.rs", &gbk("foo(\"新增\"); // 中文 foo\n"))]);
     assert_eq!(run_context(p.path(), C::InComments), vec![("a.rs".to_owned(), 0, vec![(17, 20)])]);
 }
+
+#[test]
+fn subtree_masks_preserve_results_across_search_scopes() {
+    let p = project(&[
+        ("edge/build/deep/generated.go", b"hit"),
+        ("edge/src/main.go", b"hit"),
+        ("internal/build/build.go", b"hit"),
+        ("edge/build-notes.go", b"hit"),
+    ]);
+    let q = SearchQuery { exclude: vec!["edge/build/**".into()], ..query("hit") };
+    let (views, _) = run(p.path(), &q);
+    assert_eq!(paths(&views), ["edge/build-notes.go", "edge/src/main.go", "internal/build/build.go"]);
+    let mask = ide_search::FileMask::new(&q.include, &q.exclude).unwrap();
+    for scope in [
+        SearchScope::Directory { path: "edge/build".into() },
+        SearchScope::Files { paths: vec!["edge/build/deep/generated.go".into()] },
+    ] {
+        let (views, _) = run(p.path(), &SearchQuery { scope: scope.clone(), ..q.clone() });
+        assert!(views.is_empty());
+        assert!(ide_search::scope_files(p.path(), &scope, &mask, None, &CancellationToken::new()).unwrap().is_empty());
+    }
+    // A file-name exclusion must not prune a same-named directory.
+    let (views, _) = run(p.path(), &SearchQuery { exclude: vec!["build".into()], ..query("hit") });
+    assert_eq!(views.len(), 4);
+}
+
+#[test]
+fn ignore_whitelists_do_not_override_explicit_subtree_masks() {
+    let p = project(&[
+        (".gitignore", b"generated/*\n!generated/keep/\n"),
+        ("generated/keep/.gitignore", b"!keep.go\n"),
+        ("generated/keep/keep.go", b"needle"),
+        ("src/main.go", b"needle"),
+    ]);
+    let (views, _) = run(p.path(), &query("needle"));
+    assert_eq!(paths(&views), ["generated/keep/keep.go", "src/main.go"]);
+    let (views, _) = run(p.path(), &SearchQuery { exclude: vec!["generated/**".into()], ..query("needle") });
+    assert_eq!(paths(&views), ["src/main.go"]);
+}

crates/ide-tools/src/lib.rs

@@ -1410,10 +1410,16 @@ impl Tools {
             .ok_or_else(|| IdeError::new(ErrorKind::Io, format!("`{main}` was not found in {}", dl.name)))?;
         let rel = found.strip_prefix(&pkg).expect("inside pkg").to_path_buf();
         let final_dir = self.root.join(spec.name);
-        if final_dir.exists() {
-            std::fs::remove_dir_all(&final_dir)?;
-        }
-        std::fs::rename(&pkg, &final_dir)?;
+        // Downloads made by the IDE itself are not quarantined, but archives may carry the flag.
+        clear_quarantine(&pkg);
+        // The previous install is removed in the background once replaced: deleting a large
+        // tool takes a while, and there is nothing left to cancel by then.
+        let previous = self.root.join(format!(".previous-{}", spec.name));
+        let _ = std::fs::remove_dir_all(&previous);
+        put_in_place(&pkg, &final_dir, &previous, cancel)?;
+        std::thread::spawn(move || {
+            let _ = std::fs::remove_dir_all(previous);
+        });
         let target = final_dir.join(&rel);
         let bin = final_dir.join("bin");
         if is_bundle(main) {
@@ -1428,8 +1434,6 @@ impl Tools {
                 archive::link_executable(&bin, main, &target)?;
             }
         }
-        // Downloads made by the IDE itself are not quarantined, but archives may carry the flag.
-        clear_quarantine(&final_dir);
         self.write_manifest(spec.name, &Manifest { version: Some(dl.version.clone()), source: Some(dl.url.clone()) })
     }
 
@@ -1563,6 +1567,25 @@ fn fetch_verified(
 }
 
 /// Removes the quarantine flag archives may carry, so macOS runs what was unpacked.
+/// Moves the unpacked `pkg` to `dest`, moving a previous install aside to `aside`.
+/// Cancelling stops it until then: the last point where the previous install is untouched.
+fn put_in_place(pkg: &Path, dest: &Path, aside: &Path, cancel: &CancellationToken) -> IdeResult<()> {
+    if cancel.is_cancelled() {
+        return Err(IdeError::cancelled());
+    }
+    let replaced = dest.exists();
+    if replaced {
+        std::fs::rename(dest, aside)?;
+    }
+    if let Err(e) = std::fs::rename(pkg, dest) {
+        if replaced {
+            let _ = std::fs::rename(aside, dest);
+        }
+        return Err(e.into());
+    }
+    Ok(())
+}
+
 fn clear_quarantine(dir: &Path) {
     #[cfg(target_os = "macos")]
     {

crates/ide-tools/src/tests.rs

@@ -916,3 +916,22 @@ exit 1
     let args = fs::read_to_string(log).unwrap();
     assert!(args.contains(&format!("--python {}", sdk.join("python3.14").display())), "{args}");
 }
+
+#[test]
+fn a_cancelled_install_leaves_the_previous_one_in_place() {
+    let tmp = tempfile::tempdir().unwrap();
+    let (pkg, dest, aside) = (tmp.path().join("pkg"), tmp.path().join("tool"), tmp.path().join(".previous-tool"));
+    fs::create_dir_all(&pkg).unwrap();
+    fs::write(pkg.join("new"), "").unwrap();
+    fs::create_dir_all(&dest).unwrap();
+    fs::write(dest.join("old"), "").unwrap();
+    let cancel = CancellationToken::new();
+    cancel.cancel();
+    let err = put_in_place(&pkg, &dest, &aside, &cancel).unwrap_err();
+    assert_eq!(err.kind, ErrorKind::Cancelled);
+    assert!(dest.join("old").exists() && pkg.join("new").exists() && !aside.exists());
+
+    put_in_place(&pkg, &dest, &aside, &CancellationToken::new()).unwrap();
+    assert!(dest.join("new").exists() && !dest.join("old").exists());
+    assert!(aside.join("old").exists(), "the previous install is moved aside");
+}

plugins/official/ai-completion/dist/plugin.wasm.sources

@@ -1 +1 @@
-446156fc345df7c8252592f73129f3996139e5980c6ed9a296a9cbecc334eb17
+ec93db9b37437986167b4040714f5cda5cb7a2fc138e6c2dc2a9447faaf5a802

plugins/official/ai-completion/src/lib.rs

@@ -31,10 +31,19 @@ struct Config {
     enabled: bool,
 }
 
+/// Whether `endpoint` is OpenAI's API host itself, so the key may go to it:
+/// `https`, exactly `api.openai.com` (or `:443`), and no `user@` before the host
+/// (`https://api.openai.com@localhost` is localhost).
+pub fn is_openai(endpoint: &str) -> bool {
+    let Some(rest) = endpoint.strip_prefix("https://") else { return false };
+    let authority = rest.split(['/', '?', '#']).next().unwrap_or("");
+    matches!(authority, "api.openai.com" | "api.openai.com:443")
+}
+
 fn config() -> Config {
     let get = |k: &str| storage::get(k).ok().flatten();
     let endpoint = get("endpoint").unwrap_or_else(|| LOCAL.into());
-    let openai = endpoint.starts_with(OPENAI);
+    let openai = is_openai(&endpoint);
     let model = get("model").unwrap_or_else(|| (if openai { OPENAI_MODEL } else { LOCAL_MODEL }).into());
     Config { endpoint, model, openai, enabled: get("enabled").as_deref() != Some("false") }
 }
@@ -195,6 +204,29 @@ mod tests {
         assert!(sent.headers.contains(&("Authorization".into(), "Bearer sk-test".into())));
     }
 
+    #[test]
+    fn the_key_goes_to_openai_only() {
+        assert!(is_openai(OPENAI));
+        assert!(is_openai("https://api.openai.com/"));
+        assert!(is_openai("https://api.openai.com:443/v1"));
+        for other in [
+            "https://api.openai.com@localhost:9999",
+            "https://api.openai.com:x@localhost",
+            "https://api.openai.com.example.com",
+            "https://api.openai.com\\@localhost",
+            "http://api.openai.com",
+            "http://localhost:11434",
+        ] {
+            assert!(!is_openai(other), "{other}");
+        }
+
+        let host = MockHost::install().with_capabilities(&["storage"]);
+        AiCompletion::default()
+            .run_command("set-endpoint", &host.invocation(), Some("https://api.openai.com@localhost:9999"))
+            .unwrap();
+        assert!(!config().openai, "no key for a look-alike endpoint");
+    }
+
     #[test]
     fn quiet_when_cancelled_denied_or_mid_word() {
         let host = MockHost::install().with_capabilities(&["storage"]);

plugins/official/checkstyle/dist/plugin.wasm.sources

@@ -1 +1 @@
-b072d07c4aa4a972a71fffba355ea215da7860b8f5527c6074055f52c52a29be
+1bd90bca250bb06ab3b0f27b045110c722685d894ce79d23648cb7c795d2c033

plugins/official/checkstyle/src/lib.rs

@@ -106,10 +106,16 @@ fn project_of(path: &str) -> Option<Project> {
     host::projects()
         .ok()?
         .into_iter()
-        .filter(|p| p.root().is_ok_and(|r| path.starts_with(&r)))
+        .filter(|p| p.root().is_ok_and(|r| is_under(path, &r)))
         .max_by_key(|p| p.root().map(|r| r.len()).unwrap_or(0))
 }
 
+/// Whether `path` is `root` or inside it (`/proj-x/a` is not inside `/proj`).
+fn is_under(path: &str, root: &str) -> bool {
+    path.strip_prefix(root)
+        .is_some_and(|rest| rest.is_empty() || root.ends_with(['/', '\\']) || rest.starts_with(['/', '\\']))
+}
+
 fn windows_path(path: &str) -> String {
     let path = path.replace('\\', "/");
     if let Some(rest) = path.strip_prefix("//?/UNC/") {
@@ -311,6 +317,14 @@ mod tests {
         assert!(!report_matches_file("/project/A\\B.java", "/project/A/B.java"));
     }
 
+    #[test]
+    fn a_project_contains_only_its_own_paths() {
+        assert!(is_under("/proj/A.java", "/proj"));
+        assert!(is_under("C:\\proj\\A.java", "C:\\proj"));
+        assert!(is_under("/A.java", "/"));
+        assert!(!is_under("/proj-x/A.java", "/proj"));
+    }
+
     #[test]
     fn windows_reports_match_the_saved_file_and_keep_quick_fixes() {
         for (root, reported) in [

plugins/official/csv-editor/dist/plugin.wasm.sources

@@ -1 +1 @@
-a78162e7c4c6ebd3a22c06737fd35948e11b0dd8949571617bc099ba6b4423f0
+c4c86cef9512ac03193e7d89d39b6ee41665c2d4721a78f9415d406289e9ece1

plugins/official/csv-editor/src/lib.rs

@@ -143,8 +143,9 @@ impl CsvEditor {
         let d = csv.delimiter;
         let width = csv.records.iter().map(|r| r.fields.len()).max().unwrap_or(1).max(1);
         let empty_record = d.to_string().repeat(width - 1);
-        let record = |row: u32| csv.records.get(row as usize + skip);
-        let insert = |before: u32| match record(before) {
+        let record = |row: u32| csv.records.get(usize::try_from(row).ok()?.checked_add(skip)?);
+        // Before row `before`; at the end for `None` or a row past the end.
+        let insert = |before: Option<u32>| match before.and_then(record) {
             Some(r) => vec![edit(text, r.span.start..r.span.start, format!("{empty_record}\n"))],
             None => {
                 // Append; the last record may lack its line break.
@@ -166,8 +167,8 @@ impl CsvEditor {
                     }
                 }
             }
-            ViewEvent::InsertRow(before) => insert(*before),
-            ViewEvent::Button(b) if b == "add-row" => insert(u32::MAX),
+            ViewEvent::InsertRow(before) => insert(Some(*before)),
+            ViewEvent::Button(b) if b == "add-row" => insert(None),
             ViewEvent::DeleteRows(rows) => {
                 let mut rows: Vec<u32> = rows.clone();
                 rows.sort_unstable();

plugins/official/graphviz/web-src/src/main.ts

@@ -6,7 +6,7 @@
  * which turns it into the file's problems.
  */
 import { instance, type Viz } from "@viz-js/viz";
-import { ENGINES, type Engine, exportName, problemsOf, renderOptions } from "./render";
+import { ENGINES, type Engine, exportName, problemsOf, renderOptions, withoutLinks } from "./render";
 
 const RENDER_DELAY_MS = 150;
 const MIN_ZOOM = 0.1;
@@ -73,7 +73,7 @@ function start(bridge: OpenideaBridge) {
     const problems = problemsOf(result);
     report(problems);
     if (result.status === "success") {
-      canvas.innerHTML = result.output;
+      canvas.innerHTML = withoutLinks(result.output);
       canvas.classList.remove("stale");
       banner.hidden = true;
       if (fitted) fit();

plugins/official/graphviz/web-src/src/render.test.ts

@@ -1,6 +1,6 @@
 import { instance } from "@viz-js/viz";
 import { describe, expect, it } from "vitest";
-import { ENGINES, exportName, graphvizColor, problemsOf, renderOptions } from "./render";
+import { ENGINES, exportName, graphvizColor, problemsOf, renderOptions, withoutLinks } from "./render";
 
 describe("the preview's rendering", () => {
   it("renders with the theme's colour as a default the graph can override", async () => {
@@ -42,4 +42,22 @@ describe("the preview's rendering", () => {
     expect(exportName("Flow.GV", "png")).toBe("Flow.png");
     expect(exportName("", "svg")).toBe("graph.svg");
   });
+
+  it("previews a graph's links without them", async () => {
+    const viz = await instance();
+    const js = "javascript:alert(1)";
+    const graph = `digraph {
+      URL="${js}"; target="_top"
+      a [URL="${js}" href="https://example.com" label="a href=\\"x\\""]
+      a -> b [URL="${js}" edgeURL="${js}" headURL="${js}" tailURL="${js}" labelURL="${js}" label="e" headlabel="h" taillabel="t"]
+      subgraph cluster_x { URL="${js}"; c }
+    }`;
+    const result = viz.render(graph, renderOptions("dot", null));
+    const svg = result.status === "success" ? result.output : "";
+    expect(svg).toContain(js);
+    const preview = withoutLinks(svg);
+    expect(preview).not.toMatch(/\s(xlink:)?(href|target)="|javascript:/);
+    expect(preview).toContain("a href="x"");
+    expect(preview.match(/<g id="node\d+"/g)).toHaveLength(3);
+  });
 });

plugins/official/graphviz/web-src/src/render.ts

@@ -66,3 +66,13 @@ export function exportName(file: string, extension: string): string {
   const base = file.replace(/\.(dot|gv)$/i, "") || "graph";
   return `${base}.${extension}`;
 }
+
+/**
+ * Graphviz's SVG without its links, for the preview: Graphviz writes a graph's
+ * `URL` / `href` attributes as given (`javascript:` too), and the preview's
+ * page may run inline script. Exports keep them. Graphviz quotes attribute
+ * values with `"` and escapes the ones inside, so a value never holds one.
+ */
+export function withoutLinks(svg: string): string {
+  return svg.replace(/\s(?:xlink:)?(?:href|target)="[^"]*"/g, "");
+}

plugins/official/license-header/dist/plugin.wasm.sources

@@ -1 +1 @@
-6d84abcc58c1894203506fa89855a6eade61f14add0ed72fdd7af9e3cd1298f6
+0d7731de73514b950d8579762029d98c46136f55bfdb2fa44e256cc9a9955a0f

plugins/official/license-header/src/lib.rs

@@ -58,8 +58,16 @@ pub fn has_header(text: &str) -> bool {
     })
 }
 
+/// `value` on one line: a line break (or any control character, or the
+/// Unicode line separators JavaScript ends a comment at) would put the rest of
+/// the setting into the file as code.
+fn one_line(value: &str) -> String {
+    value.chars().map(|c| if c.is_control() || matches!(c, '\u{2028}' | '\u{2029}') { ' ' } else { c }).collect()
+}
+
 /// The header's lines, without comment markers.
 pub fn header_lines(year: i64, owner: &str, license: &str) -> Vec<String> {
+    let (owner, license) = (one_line(owner), one_line(license));
     let owner = owner.trim();
     let mut lines =
         vec![if owner.is_empty() { format!("Copyright (c) {year}") } else { format!("Copyright (c) {year} {owner}") }];
@@ -82,7 +90,8 @@ pub fn render(comment: Comment, lines: &[String]) -> String {
             out.push_str(open);
             out.push('\n');
             for l in lines {
-                out.push_str(&format!(" * {l}\n"));
+                // `*/` would end the comment early.
+                out.push_str(&format!(" * {}\n", l.replace("*/", "* /")));
             }
             out.push_str(close);
             out.push('\n');
@@ -170,10 +179,16 @@ fn project_of(path: &str) -> Option<Project> {
     host::projects()
         .ok()?
         .into_iter()
-        .filter(|p| p.root().is_ok_and(|r| path.starts_with(&r)))
+        .filter(|p| p.root().is_ok_and(|r| is_under(path, &r)))
         .max_by_key(|p| p.root().map(|r| r.len()).unwrap_or(0))
 }
 
+/// Whether `path` is `root` or inside it (`/proj-x/a` is not inside `/proj`).
+fn is_under(path: &str, root: &str) -> bool {
+    path.strip_prefix(root)
+        .is_some_and(|rest| rest.is_empty() || root.ends_with(['/', '\\']) || rest.starts_with(['/', '\\']))
+}
+
 #[derive(Default)]
 pub struct LicenseHeader;
 
@@ -305,6 +320,15 @@ mod tests {
         assert_eq!(header_lines(2026, " ", ""), ["Copyright (c) 2026"]);
     }
 
+    #[test]
+    fn settings_cannot_add_code_to_the_file() {
+        let lines = header_lines(2026, "ACME\nimport os\r\u{2028}x", "MIT\nrm -rf");
+        assert_eq!(lines, ["Copyright (c) 2026 ACME import os  x", "SPDX-License-Identifier: MIT rm -rf"]);
+        assert_eq!(render(comment_for("a.py").unwrap(), &lines).lines().filter(|l| !l.starts_with('#')).count(), 1);
+        let css = render(comment_for("s.css").unwrap(), &header_lines(2026, "X */ body { }", ""));
+        assert_eq!(css.matches("*/").count(), 1, "{css}");
+    }
+
     #[test]
     fn keeps_shebang_and_encoding_lines_first() {
         assert_eq!(insert_line("fn main() {}\n"), 0);
@@ -324,6 +348,12 @@ mod tests {
         assert!(header_edit("a.rs", "// Copyright (c) 2020 X\n", 2026, "", "").is_none());
     }
 
+    #[test]
+    fn a_project_contains_only_its_own_paths() {
+        assert!(is_under("/proj/a.rs", "/proj"));
+        assert!(!is_under("/proj-x/a.rs", "/proj"));
+    }
+
     #[test]
     fn years() {
         assert_eq!(year_of_day(0), 1970);

plugins/official/mybatis/dist/plugin.wasm.sources

@@ -1 +1 @@
-a303522c605ccc9804e67f85326778a380951ce14022a70bc37ba3ae63b76f79
+959cb2ab750211bd1cc894a4d804acb2dd16e95c1e65b267e7eccbb64cbdd8da

plugins/official/mybatis/src/lib.rs

@@ -9,11 +9,15 @@ use openidea_plugin::text::{offset, position};
 use openidea_plugin::{
     Error, Invocation, Location, Plugin, Position, Project, Range, TextQuery, host, register_plugin,
 };
-use std::collections::BTreeMap;
+use std::collections::{BTreeMap, BTreeSet};
 use std::time::{Duration, Instant};
 
 /// How long a namespace → XML file lookup is trusted.
 const INDEX_TTL: Duration = Duration::from_secs(30);
+/// Lookups kept per project before the expired ones are dropped.
+const MAX_INDEXED: usize = 1024;
+/// Other mappers one file's references are looked up in (each is a search).
+const MAX_OTHER_MAPPERS: usize = 32;
 /// Files declaring one namespace that are tried (normally one).
 const MAX_MAPPERS: u32 = 64;
 const STATEMENTS: [&str; 4] = ["select", "insert", "update", "delete"];
@@ -85,27 +89,77 @@ pub struct MapperJava {
     pub result_ids: Vec<(usize, Named)>,
 }
 
-fn range_of(text: &str, start: usize, end: usize) -> Range {
-    Range::new(position(text, start), position(text, end))
+/// Positions of many byte offsets in one text, asked in about increasing
+/// order: each one scans only from the offset asked before it, so a file with
+/// many names costs about one pass, not one pass per name.
+struct Positions<'a> {
+    text: &'a str,
+    at: usize,
+    pos: Position,
+}
+
+fn utf16_len(s: &str) -> u32 {
+    s.chars().map(|c| c.len_utf16() as u32).sum()
+}
+
+impl<'a> Positions<'a> {
+    fn new(text: &'a str) -> Self {
+        Positions { text, at: 0, pos: Position::new(0, 0) }
+    }
+
+    fn of(&mut self, at: usize) -> Position {
+        let at = at.min(self.text.len());
+        if at >= self.at {
+            for c in self.text[self.at..at].chars() {
+                if c == '\n' {
+                    self.pos = Position::new(self.pos.line + 1, 0);
+                } else {
+                    self.pos.character += c.len_utf16() as u32;
+                }
+            }
+        } else {
+            let back = &self.text[at..self.at];
+            match back.matches('\n').count() as u32 {
+                0 => self.pos.character -= utf16_len(back),
+                lines => {
+                    let line_start = self.text[..at].rfind('\n').map_or(0, |i| i + 1);
+                    self.pos = Position::new(self.pos.line - lines, utf16_len(&self.text[line_start..at]));
+                }
+            }
+        }
+        self.at = at;
+        self.pos
+    }
+
+    fn range(&mut self, start: usize, end: usize) -> Range {
+        Range::new(self.of(start), self.of(end))
+    }
+}
+
+/// Where a completion that replaces `typed` (just before `at`, on its line) starts.
+fn replace_start(at: Position, typed: &str) -> Option<Position> {
+    if typed.contains('\n') {
+        return None;
+    }
+    Some(Position::new(at.line, at.character.checked_sub(utf16_len(typed))?))
 }
 
 pub fn parse_xml(text: &str) -> MapperXml {
     let mut out = MapperXml::default();
-    let attr = |tag_start: usize, name: &str| -> Option<(String, usize, usize)> {
-        let tag_end = text[tag_start..].find('>').map_or(text.len(), |i| tag_start + i);
-        let tag = &text[tag_start..tag_end];
-        let i = tag.find(&format!("{name}=\""))? + name.len() + 2;
-        let j = tag[i..].find('"')? + i;
-        Some((tag[i..j].to_owned(), tag_start + i, tag_start + j))
-    };
+    let mut positions = Positions::new(text);
     let mut at = 0;
     while let Some(i) = text[at..].find('<') {
         let start = at + i + 1;
         at = start;
         let name: String = text[start..].chars().take_while(|c| c.is_ascii_alphanumeric() || *c == '_').collect();
-        let named = |attr_name: &str| -> Option<Named> {
-            let (v, s, e) = attr(start, attr_name)?;
-            Some(Named { name: v, range: range_of(text, s, e) })
+        // `<` cannot appear inside an attribute value, so a tag without its
+        // `>` ends at the next `<`: no tag is searched past the next one.
+        let tag_end = text[start..].find(['<', '>']).map_or(text.len(), |i| start + i);
+        let tag = &text[start..tag_end];
+        let mut named = |attr_name: &str| -> Option<Named> {
+            let i = tag.find(&format!("{attr_name}=\""))? + attr_name.len() + 2;
+            let j = tag[i..].find('"')? + i;
+            Some(Named { name: tag[i..j].to_owned(), range: positions.range(start + i, start + j) })
         };
         if name == "mapper" {
             out.namespace = named("namespace");
@@ -163,7 +217,8 @@ fn skip_string(bytes: &[u8], mut i: usize) -> usize {
             _ => i += 1,
         }
     }
-    i
+    // A `\` as the last byte steps past the end.
+    i.min(bytes.len())
 }
 
 /// The index just past the `//…` or `/*…*/` comment opening at `bytes[i]`.
@@ -227,7 +282,7 @@ fn scan_declaration(stmt: &str) -> Option<Declaration> {
             }
             b'(' => {
                 let before = stmt[..i].trim_end();
-                let start = before.rfind(|c: char| !ident(c)).map_or(0, |p| p + 1);
+                let start = before.char_indices().rev().find(|&(_, c)| !ident(c)).map_or(0, |(p, c)| p + c.len_utf8());
                 if start == before.len() {
                     return None;
                 }
@@ -463,11 +518,8 @@ fn annotation_string_arg(args: &str, key: &str) -> Option<(String, usize, usize)
                 depth = depth.saturating_sub(1);
                 i += 1;
             }
-            _ if depth == 0 && ident(bytes[i] as char) => {
-                let mut j = i + 1;
-                while j < bytes.len() && ident(bytes[j] as char) {
-                    j += 1;
-                }
+            _ if depth == 0 && args.is_char_boundary(i) && args[i..].chars().next().is_some_and(ident) => {
+                let j = args[i..].char_indices().find(|&(_, c)| !ident(c)).map_or(args.len(), |(n, _)| i + n);
                 if &args[i..j] == key {
                     let mut k = j;
                     while k < bytes.len() && bytes[k].is_ascii_whitespace() {
@@ -548,8 +600,9 @@ pub fn parse_java(text: &str) -> MapperJava {
         Some(p) => format!("{p}.{simple}"),
         None => simple.clone(),
     });
+    let mut positions = Positions::new(text);
     let decl =
-        Some(Named { name: simple.clone(), range: range_of(text, i + 10 + indent, i + 10 + indent + simple.len()) });
+        Some(Named { name: simple.clone(), range: positions.range(i + 10 + indent, i + 10 + indent + simple.len()) });
     let body_start = text[i..].find('{').map_or(text.len(), |b| i + b + 1);
     let mut methods = Vec::new();
     let mut annotation_sql = Vec::new();
@@ -599,22 +652,21 @@ pub fn parse_java(text: &str) -> MapperJava {
                 {
                     let (s, e) = (stmt_start + decl.name.0, stmt_start + decl.name.1);
                     let list_base = stmt_start + decl.parens.0 + 1;
+                    let method_name =
+                        Named { name: stmt[decl.name.0..decl.name.1].to_owned(), range: positions.range(s, e) };
                     let params = params_of(&stmt[decl.parens.0 + 1..decl.parens.1])
                         .into_iter()
-                        .map(|(name, ps, pe)| Param { name, range: range_of(text, list_base + ps, list_base + pe) })
+                        .map(|(name, ps, pe)| Param { name, range: positions.range(list_base + ps, list_base + pe) })
                         .collect();
                     let method = methods.len();
-                    methods.push((
-                        Named { name: stmt[decl.name.0..decl.name.1].to_owned(), range: range_of(text, s, e) },
-                        params,
-                    ));
+                    methods.push((method_name, params));
                     let mut strings = Vec::new();
                     let mut sql_params = Vec::new();
                     for (ss, se, ps) in annotation_sql_of(&stmt[..decl.parens.0]) {
-                        strings.push(range_of(text, stmt_start + ss, stmt_start + se));
+                        strings.push(positions.range(stmt_start + ss, stmt_start + se));
                         sql_params.extend(ps.into_iter().map(|(n, ms, me)| Named {
                             name: n,
-                            range: range_of(text, stmt_start + ms, stmt_start + me),
+                            range: positions.range(stmt_start + ms, stmt_start + me),
                         }));
                     }
                     if !strings.is_empty() {
@@ -623,10 +675,10 @@ pub fn parse_java(text: &str) -> MapperJava {
                     let (refs, defs) = result_map_of(&stmt[..decl.parens.0]);
                     result_refs.extend(refs.into_iter().map(|(v, rs, re)| ResultMapRef {
                         method,
-                        name: Named { name: v, range: range_of(text, stmt_start + rs, stmt_start + re) },
+                        name: Named { name: v, range: positions.range(stmt_start + rs, stmt_start + re) },
                     }));
                     result_ids.extend(defs.into_iter().map(|(v, ds, de)| {
-                        (method, Named { name: v, range: range_of(text, stmt_start + ds, stmt_start + de) })
+                        (method, Named { name: v, range: positions.range(stmt_start + ds, stmt_start + de) })
                     }));
                 }
                 stmt_start = k + 1;
@@ -641,8 +693,13 @@ pub fn parse_java(text: &str) -> MapperJava {
 
 /// `namespace="com.acme.UserMapper"` in an XML file, either quote.
 fn namespace_query(namespace: &str) -> TextQuery {
-    let escaped: String =
-        namespace.chars().flat_map(|c| matches!(c, '.' | '$').then_some('\\').into_iter().chain([c])).collect();
+    let mut escaped = String::with_capacity(namespace.len());
+    for c in namespace.chars() {
+        if r"\.+*?()|[]{}^$#&-~".contains(c) {
+            escaped.push('\\');
+        }
+        escaped.push(c);
+    }
     TextQuery {
         pattern: format!(r#"namespace\s*=\s*["']{escaped}["']"#),
         regex: true,
@@ -656,14 +713,22 @@ fn project_of(path: &str) -> Option<Project> {
     host::projects()
         .ok()?
         .into_iter()
-        .filter(|p| p.root().is_ok_and(|r| path.starts_with(&r)))
+        .filter(|p| p.root().is_ok_and(|r| is_under(path, &r)))
         .max_by_key(|p| p.root().map(|r| r.len()).unwrap_or(0))
 }
 
+/// Whether `path` is `root` or inside it (`/proj-x/a` is not inside `/proj`).
+fn is_under(path: &str, root: &str) -> bool {
+    path.strip_prefix(root)
+        .is_some_and(|rest| rest.is_empty() || root.ends_with(['/', '\\']) || rest.starts_with(['/', '\\']))
+}
+
 #[derive(Default)]
 pub struct Navigator {
     /// project root → namespace → (when it was looked up, the XML mapping it, if any).
     xml_index: BTreeMap<String, BTreeMap<String, (Instant, Option<String>)>>,
+    /// Other mappers looked up for the file being linked (see [`MAX_OTHER_MAPPERS`]).
+    other_mappers: BTreeSet<String>,
 }
 
 impl Navigator {
@@ -687,15 +752,20 @@ impl Navigator {
         let mut paths: Vec<&str> = found.matches.iter().map(|m| m.location.path.as_str()).collect();
         paths.dedup();
         let hit = paths.into_iter().find_map(|path| Some((path.to_owned(), read(path)?)));
-        self.xml_index
-            .entry(root)
-            .or_default()
-            .insert(namespace.to_owned(), (Instant::now(), hit.as_ref().map(|(path, _)| path.clone())));
+        let index = self.xml_index.entry(root).or_default();
+        if index.len() >= MAX_INDEXED {
+            index.retain(|_, (at, _)| at.elapsed() < INDEX_TTL);
+        }
+        index.insert(namespace.to_owned(), (Instant::now(), hit.as_ref().map(|(path, _)| path.clone())));
         hit
     }
 
     /// The interface `namespace` names (`com.acme.UserMapper` → `**/com/acme/UserMapper.java`).
     fn java_for(project: &Project, namespace: &str) -> Option<(String, MapperJava)> {
+        // A Java name only: anything else would be read as a glob.
+        if namespace.is_empty() || !namespace.chars().all(|c| ident(c) || c == '.') {
+            return None;
+        }
         let rel = format!("**/{}.java", namespace.replace('.', "/"));
         let path = project.find_files(&rel, 1).ok()?.into_iter().next()?;
         let java = parse_java(&project.read_file(&path).ok()?);
@@ -722,6 +792,14 @@ impl Navigator {
         if ns == here_ns {
             return pick(xml, doc.path.clone());
         }
+        // Each other mapper is a project search: a file naming thousands of them
+        // resolves the first few rather than running out of time.
+        if !self.other_mappers.contains(ns) {
+            if self.other_mappers.len() >= MAX_OTHER_MAPPERS {
+                return None;
+            }
+            self.other_mappers.insert(ns.to_owned());
+        }
         let (path, other) = self.xml_for(project, ns)?;
         pick(&other, path)
     }
@@ -751,7 +829,7 @@ impl Navigator {
             }
             typed
         };
-        let start = Position::new(at.line, at.character - typed.encode_utf16().count() as u32);
+        let start = replace_start(at, typed)?;
         let mut ids: Vec<String> = java.result_ids.iter().map(|(_, d)| d.name.clone()).collect();
         if let Some(project) = project_of(&doc.path)
             && let Some(name) = &java.name
@@ -796,6 +874,7 @@ impl Navigator {
                 }));
             }
             // resultMap / sql references resolve even when the interface is missing.
+            self.other_mappers.clear();
             for r in xml.result_map_refs.iter().chain(xml.extends_refs.iter()) {
                 if let Some(target) = self.anchor_target(&project, doc, &xml, &ns.name, &r.name, false) {
                     out.push((r.clone(), target, format!("resultMap {}", r.name)));
@@ -914,7 +993,7 @@ impl Providers for Navigator {
             && STATEMENTS.iter().any(|t| line.contains(&format!("<{t}")))
         {
             let typed = &line[i + 4..];
-            let start = Position::new(at.line, at.character - typed.encode_utf16().count() as u32);
+            let Some(start) = replace_start(at, typed) else { return Vec::new() };
             return java
                 .methods
                 .iter()
@@ -932,7 +1011,7 @@ impl Providers for Navigator {
             && line.contains("<include")
         {
             let typed = &line[i + 7..];
-            let start = Position::new(at.line, at.character - typed.encode_utf16().count() as u32);
+            let Some(start) = replace_start(at, typed) else { return Vec::new() };
             return xml
                 .sql_fragments
                 .iter()
@@ -949,12 +1028,12 @@ impl Providers for Navigator {
             && !before[i..].contains('}')
         {
             let typed = &before[i + 2..];
-            let statement =
-                xml.statements.iter().rev().find(|s| offset(&doc.text, s.range.start).is_some_and(|o| o < cursor));
+            let here = position(&doc.text, cursor);
+            let statement = xml.statements.iter().rev().find(|s| s.range.start < here);
             let Some((_, params)) = statement.and_then(|s| java.methods.iter().find(|(m, _)| m.name == s.name)) else {
                 return Vec::new();
             };
-            let start = Position::new(at.line, at.character - typed.encode_utf16().count() as u32);
+            let Some(start) = replace_start(at, typed) else { return Vec::new() };
             return params
                 .iter()
                 .filter(|p| p.name.starts_with(typed))
@@ -971,16 +1050,12 @@ impl Providers for Navigator {
 /// After `#{` / `${` inside an annotation SQL string: the method's parameters.
 fn annotation_param_completion(doc: &Document, at: Position) -> Vec<CompletionItem> {
     let Some(cursor) = offset(&doc.text, at) else { return Vec::new() };
+    let here = position(&doc.text, cursor);
     let java = parse_java(&doc.text);
     for sql in &java.annotation_sql {
         let (_, params) = &java.methods[sql.method];
-        for s in &sql.strings {
-            let (Some(start), Some(end)) = (offset(&doc.text, s.start), offset(&doc.text, s.end)) else {
-                continue;
-            };
-            if !(start <= cursor && cursor <= end) {
-                continue;
-            }
+        for s in sql.strings.iter().filter(|s| s.start <= here && here <= s.end) {
+            let Some(start) = offset(&doc.text, s.start) else { continue };
             let seg = &doc.text[start..cursor];
             let mut token: Option<usize> = None;
             for t in ["#{", "${"] {
@@ -993,7 +1068,7 @@ fn annotation_param_completion(doc: &Document, at: Position) -> Vec<CompletionIt
             if typed.contains('}') || !typed.chars().all(|c| ident(c) || c == '.') {
                 continue;
             }
-            let start = Position::new(at.line, at.character - typed.encode_utf16().count() as u32);
+            let Some(start) = replace_start(at, typed) else { continue };
             return params
                 .iter()
                 .filter(|p| p.name.starts_with(typed))
@@ -1477,4 +1552,89 @@ mod tests {
         let items = n.completion(&closed, Position::new(7, col as u32), None);
         assert_eq!(items.iter().map(|c| c.label.as_str()).collect::<Vec<_>>(), ["userMap"]);
     }
+
+    #[test]
+    fn positions_agree_with_the_sdk_in_any_order() {
+        let text = "a\n中文 😀 x\r\n\n  é\nlast";
+        let mut positions = Positions::new(text);
+        let boundaries: Vec<usize> = (0..=text.len()).filter(|&i| text.is_char_boundary(i)).collect();
+        let order = boundaries.iter().chain(boundaries.iter().rev()).chain(boundaries.iter().step_by(3).rev());
+        for &at in order.chain([0, text.len(), 5, 1, text.len()].iter()) {
+            assert_eq!(positions.of(at), position(text, at), "at {at}");
+        }
+    }
+
+    /// Text a mapper may hold (or be crafted to hold) must not crash the plugin.
+    #[test]
+    fn odd_java_does_not_panic() {
+        // A no-break space before the name: the char before it is 2 bytes.
+        let java = parse_java("package a;\ninterface M {\n    User\u{00A0}findById(long id);\n}\n");
+        assert_eq!(java.methods.iter().map(|(m, _)| m.name.as_str()).collect::<Vec<_>>(), ["findById"]);
+        // A non-ASCII identifier among `@Results` arguments.
+        let java = parse_java("interface M { @Results(é) User f(); @Results(id = 常量.ID, x = \"y\") User g(); }");
+        assert_eq!(java.methods.len(), 2);
+        // A string the annotation scanner reads as a char literal, ending in `\`.
+        for text in [
+            "package a;\ninterface M {\n  @Select('\"' \\) void f();\n}",
+            "interface M { @Select(/*\"*/ \\) void f(); }",
+        ] {
+            parse_java(text);
+        }
+        assert_eq!(skip_string(b"\"a\\", 0), 3);
+    }
+
+    #[test]
+    fn a_tag_without_its_end_stops_at_the_next() {
+        let xml = parse_xml("<mapper namespace=\"a.B\"\n<select id=\"x\"\n<sql id=\"y\"/>");
+        assert_eq!(xml.namespace.map(|n| n.name).as_deref(), Some("a.B"));
+        assert_eq!(xml.statements.iter().map(|s| s.name.as_str()).collect::<Vec<_>>(), ["x"]);
+        assert_eq!(xml.sql_fragments[0].range, Range::new(Position::new(2, 9), Position::new(2, 10)));
+        // Many unclosed tags parse in one pass, not one pass per tag.
+        let many = "<select id=\"a\" ".repeat(50_000);
+        assert_eq!(parse_xml(&many).statements.len(), 50_000);
+    }
+
+    #[test]
+    fn completion_before_an_unclosed_parameter_on_an_earlier_line() {
+        let _host = setup();
+        let text = "<mapper namespace=\"com.acme.UserMapper\">\n  <select id=\"findById\">\n    where id = #{i\nx";
+        let xml = doc("/project/src/main/resources/mapper/UserMapper.xml", "xml", text);
+        assert!(Navigator::default().completion(&xml, Position::new(3, 0), None).is_empty());
+    }
+
+    #[test]
+    fn namespaces_are_searched_and_globbed_literally() {
+        let pattern = namespace_query("a|b.x[0]").pattern;
+        assert!(pattern.contains(r"a\|b\.x\[0\]"), "{pattern}");
+        let _host = setup();
+        let project = host::projects().unwrap().remove(0);
+        assert!(Navigator::java_for(&project, "com.acme.UserMapper").is_some());
+        assert!(Navigator::java_for(&project, "com.*.UserMapper").is_none());
+        assert!(Navigator::java_for(&project, "").is_none());
+    }
+
+    #[test]
+    fn a_project_contains_only_its_own_paths() {
+        assert!(is_under("/proj/a.xml", "/proj"));
+        assert!(is_under("/proj/a.xml", "/proj/"));
+        assert!(is_under("C:\\proj\\a.xml", "C:\\proj"));
+        assert!(is_under("/proj", "/proj"));
+        assert!(!is_under("/proj-x/a.xml", "/proj"));
+    }
+
+    #[test]
+    fn a_file_naming_many_mappers_looks_up_a_few() {
+        let host = MockHost::install();
+        let searches = std::rc::Rc::new(std::cell::Cell::new(0));
+        let count = searches.clone();
+        host.on_search(move |_, _| {
+            count.set(count.get() + 1);
+            Ok(TextSearch { matches: Vec::new(), limit_hit: false })
+        });
+        let refs: String = (0..200).map(|n| format!("  <include refid=\"ns{n}.x\"/>\n")).collect();
+        let text = format!("<mapper namespace=\"a.Self\">\n{refs}</mapper>\n");
+        let xml = doc("/project/src/m.xml", "xml", &text);
+        assert!(Navigator::default().line_markers(&xml).is_empty());
+        assert_eq!(searches.get(), MAX_OTHER_MAPPERS);
+    }
 }

plugins/official/regex-tester/dist/plugin.wasm.sources

@@ -1 +1 @@
-b7b4e6be26ff08cc0e7fa791cb956acd9afa09905720d2c0c93acdae5638a35e
+d5ec377869ded4ec0bf533d07d51610aec7a6813d43ead98a261b3f54e7d0655

plugins/official/regex-tester/src/lib.rs

@@ -94,7 +94,23 @@ pub fn evaluate(run: &Run) -> Value {
         }
     }
     let replaced = run.replace.as_ref().map(|r| {
-        let mut out = re.replace_all(&run.text, r.as_str()).into_owned();
+        // Built match by match and cut off at the limit: `replace_all` would
+        // first build all of it (an empty match at every character, each
+        // replaced with a long text, runs out of memory).
+        let mut out = String::new();
+        let mut last = 0;
+        for caps in re.captures_iter(&run.text) {
+            let m = caps.get(0).expect("group 0");
+            out.push_str(&run.text[last..m.start()]);
+            caps.expand(r, &mut out);
+            last = m.end();
+            if out.len() > MAX_REPLACED {
+                break;
+            }
+        }
+        if out.len() <= MAX_REPLACED {
+            out.push_str(&run.text[last..]);
+        }
         if out.len() > MAX_REPLACED {
             let mut cut = MAX_REPLACED;
             while !out.is_char_boundary(cut) {
@@ -241,6 +257,13 @@ mod tests {
         assert!(bad["error"].as_str().unwrap().contains("unclosed"), "{bad}");
         assert_eq!(bad["count"], 0);
         assert_eq!(run("", "", "x", None)["count"], 0);
+        let long = run("(?:)", "", &"a".repeat(100_000), Some(&"b".repeat(10_000)));
+        let replaced = long["replaced"].as_str().unwrap();
+        assert!(replaced.len() <= MAX_REPLACED + '…'.len_utf8() && replaced.ends_with('…'));
+        for (pattern, text, with) in [("a*", "baac", "[$0]"), (r"(\w)(\d)", "a1 b2 c", "$2$1"), ("x", "y", "z")] {
+            let expected = regex::Regex::new(pattern).unwrap().replace_all(text, with).into_owned();
+            assert_eq!(run(pattern, "", text, Some(with))["replaced"], expected);
+        }
     }
 
     #[test]

plugins/official/solidity/dist/plugin.wasm.sources

@@ -1 +1 @@
-4f585c3a1a3ae01a89811e05d27fc39121dd8e74210c1281d04ff31556d393b5
+ebbd24e08c19953895464567cbaf1335b9847e98e8a8da8a4e0b8c2886c1abd6

plugins/official/solidity/src/lib.rs

@@ -347,6 +347,8 @@ fn highlights(text: &str) -> Vec<Token> {
 /// An open `{`: the symbol whose body it is, and what may be declared inside.
 struct Frame {
     symbol: Option<usize>,
+    /// The innermost symbol of this frame or the ones around it.
+    parent: Option<usize>,
     body: Body,
 }
 
@@ -366,7 +368,7 @@ fn outline(text: &str) -> Vec<Symbol> {
     let code: Vec<Lexeme> = lex(text).into_iter().filter(|l| !l.is_trivia()).collect();
     let word = |i: usize| code.get(i).map_or("", |l| l.text(text));
     let mut symbols: Vec<Symbol> = Vec::new();
-    let mut frames = vec![Frame { symbol: None, body: Body::File }];
+    let mut frames = vec![Frame { symbol: None, parent: None, body: Body::File }];
     // A declaration waiting for its body (`{`) or its end (`;`).
     let mut pending: Option<(usize, Body)> = None;
     let mut stmt_start = 0usize;
@@ -375,7 +377,9 @@ fn outline(text: &str) -> Vec<Symbol> {
         let l = code[i];
         let w = l.text(text);
         let body = frames.last().map_or(Body::File, |f| f.body);
-        let parent = frames.iter().rev().find_map(|f| f.symbol);
+        // From the top frame alone: walking every open `{` per token is
+        // quadratic in deeply nested code.
+        let parent = frames.last().and_then(|f| f.parent);
         let add = |symbols: &mut Vec<Symbol>, name_at: usize, kind: SymbolKind, detail: Option<&str>| {
             let name = code[name_at];
             symbols.push(Symbol {
@@ -395,7 +399,7 @@ fn outline(text: &str) -> Vec<Symbol> {
                     Some((s, b)) => (Some(s), b),
                     None => (None, if body == Body::Code || body == Body::Contract { Body::Code } else { body }),
                 };
-                frames.push(Frame { symbol, body: inner });
+                frames.push(Frame { symbol, parent: symbol.or(parent), body: inner });
                 stmt_start = i + 1;
             }
             (Kind::Punct, "}") => {
@@ -512,7 +516,8 @@ fn outline(text: &str) -> Vec<Symbol> {
 
 fn folding(text: &str) -> Vec<Fold> {
     let lexemes = lex(text);
-    let line_of = |offset: usize| text[..offset].bytes().filter(|&b| b == b'\n').count() as u32;
+    let newlines: Vec<usize> = text.bytes().enumerate().filter(|&(_, b)| b == b'\n').map(|(i, _)| i).collect();
+    let line_of = |offset: usize| newlines.partition_point(|&n| n < offset) as u32;
     let skip: Vec<Range<usize>> = lexemes
         .iter()
         .filter(|l| matches!(l.kind, Kind::Str | Kind::Comment | Kind::DocComment))
@@ -686,4 +691,19 @@ function free(uint x) pure returns (uint) { return x; }
             let _ = folding(text);
         }
     }
+
+    /// Deep nesting and many comments stay about linear (both used to be quadratic).
+    #[test]
+    fn large_inputs_stay_linear() {
+        let deep = format!("contract C {{ function f() public {{ {} }} }}", "{".repeat(200_000));
+        let symbols = outline(&deep);
+        assert_eq!(
+            symbols.iter().map(|s| (s.name.as_str(), s.parent)).collect::<Vec<_>>(),
+            [("C", None), ("f", Some(0))]
+        );
+        let comments = "/* a\n */\n".repeat(100_000);
+        let folds = folding(&comments);
+        assert_eq!(folds.len(), 100_000);
+        assert_eq!((folds[99_999].start_line, folds[99_999].end_line), (199_998, 199_999));
+    }
 }

plugins/official/string-tools/dist/plugin.wasm.sources

@@ -1 +1 @@
-81637f9a265e6bcb9839b1019b0d58b43f80535fb1fca044716904aef0c12724
+997e2ac7520a561f22d12ad7013ed576262424ffa8acd69fab219f68d00c92f1

plugins/official/string-tools/src/lib.rs

@@ -230,7 +230,8 @@ fn step_numbers(s: &str, by: i64) -> String {
                         out.pop(); // the minus sign
                     }
                     let width = digits.len();
-                    let text = if next < 0 { format!("-{:0width$}", -next) } else { format!("{next:0width$}") };
+                    let text =
+                        if next < 0 { format!("-{:0width$}", next.unsigned_abs()) } else { format!("{next:0width$}") };
                     out.push_str(&text);
                 }
                 Err(_) => out.push_str(&digits),
@@ -338,7 +339,8 @@ fn html_unescape(s: &str) -> String {
     while let Some(i) = rest.find('&') {
         out.push_str(&rest[..i]);
         rest = &rest[i..];
-        let Some(end) = rest[..rest.len().min(12)].find(';') else {
+        // `;` is ASCII, so where it is found is a char boundary.
+        let Some(end) = rest.bytes().take(12).position(|b| b == b';') else {
             out.push('&');
             rest = &rest[1..];
             continue;
@@ -416,6 +418,7 @@ mod tests {
         assert_eq!(base64_encode(b"Man"), "TWFu");
         assert_eq!(url_encode("a b&c"), "a%20b%26c");
         assert_eq!(html_unescape("&lt;a&gt; &#x41;&#66; &bogus; &"), "<a> AB &bogus; &");
+        assert_eq!(html_unescape("R&D部门的预算 &aaaaaaaaaa€"), "R&D部门的预算 &aaaaaaaaaa€");
         assert_eq!(json_escape("a\"b\n"), "a\\\"b\\n");
     }
 
@@ -426,6 +429,8 @@ mod tests {
         assert_eq!(t("unique-lines", "a\nb\na"), "a\nb");
         assert_eq!(t("increment", "v1.09 and -1"), "v2.10 and 0");
         assert_eq!(t("decrement", "x0"), "x-1");
+        assert_eq!(t("decrement", "-9223372036854775807"), "-9223372036854775808");
+        assert_eq!(t("decrement", "-9223372036854775808"), "-9223372036854775808");
     }
 
     #[test]

src/editor/core/actions.ts

@@ -95,9 +95,12 @@ import { readFileLines, withDocument } from "@/editor/lsp/files";
 import { pathToCopy } from "@/platform/copyPath";
 import { shortcutLabel } from "@/platform/keymap";
 
-/** Text-editing actions: the editor has focus, or a popup (Find Action) runs them on it. */
-export const TEXT_WHEN = "editorTextFocus || textEditorActive && popupOpen";
-const EDITOR_WHEN = "textEditorActive && (editorFocus || popupOpen || !toolWindowFocus)";
+/**
+ * Text-editing actions: the editor has focus, or a popup (Find Action) runs them on it. Not a
+ * tool window's speed search: it opens a layer too, but the keys belong to its tree (⌘⌫).
+ */
+export const TEXT_WHEN = "editorTextFocus || textEditorActive && popupOpen && !toolWindowFocus";
+const EDITOR_WHEN = "textEditorActive && (editorFocus || !toolWindowFocus)";
 const TABS_WHEN = "editorTabsOpen && !toolWindowFocus";
 
 function activeSlot(): EditorSlot | null {
@@ -666,7 +669,7 @@ export function registerEditorActions(): () => void {
     id,
     title,
     category: "Edit",
-    when: `${TEXT_WHEN} || findBarFocus || findBarOpen && popupOpen`,
+    when: `${TEXT_WHEN} || findBarFocus || findBarOpen && popupOpen && !toolWindowFocus`,
     run: ({ arg, ctx }) => {
       const view = typeof arg === "string" || ctx.findBarFocus ? findPanelTarget(arg)?.view() : null;
       if (view) {

src/editor/core/controller.test.ts

@@ -9,9 +9,10 @@ import { registerActions } from "@/platform/actions";
 import { useProject } from "@/platform/project";
 import { useRemote } from "@/platform/remote";
 import { hideContextMenu, resolveMenuItems, useContextMenuStore } from "@/ui";
-import { getContext, setContext } from "@/platform/context";
+import { evaluateWhen, getContext, setContext } from "@/platform/context";
 import { installKeyboardDispatcher } from "@/platform/keymap";
 import { TEXT_WHEN } from "./actions";
+import { EDITOR_WHEN } from "@/editor/lsp/actions";
 
 let ctrl: EditorController | null = null;
 
@@ -464,3 +465,21 @@ describe("EditorController", () => {
     }
   });
 });
+
+describe("editor action when clauses", () => {
+  const editorBehind = { textEditorActive: true, editorTextFocus: false, editorFocus: false, popupOpen: true };
+
+  it.each([
+    ["TEXT_WHEN", TEXT_WHEN],
+    ["EDITOR_WHEN", EDITOR_WHEN],
+  ])("%s runs on the editor from a popup such as Find Action", (_, when) => {
+    expect(evaluateWhen(when, { ...editorBehind, toolWindowFocus: false })).toBe(true);
+  });
+
+  it.each([
+    ["TEXT_WHEN", TEXT_WHEN],
+    ["EDITOR_WHEN", EDITOR_WHEN],
+  ])("%s leaves keys to a tool window's speed search, e.g. ⌘⌫ to Delete Line", (_, when) => {
+    expect(evaluateWhen(when, { ...editorBehind, toolWindowFocus: true })).toBe(false);
+  });
+});

src/editor/lsp/actions.ts

@@ -30,7 +30,7 @@ import {
 import { evaluateWhen } from "@/platform/context";
 
 /** Editor actions apply to the active text editor unless a tool window or popup owns the keyboard. */
-export const EDITOR_WHEN = "textEditorActive && (editorFocus || popupOpen || !toolWindowFocus)";
+export const EDITOR_WHEN = "textEditorActive && (editorFocus || !toolWindowFocus)";
 
 /**
  * Languages whose servers offer Generate (constructors, accessors, overrides…).

src/editor/lsp/navigation.ts

@@ -63,6 +63,7 @@ import {
   SYNTAX_NOTE,
   declarationFallback,
   indexDefinitions,
+  isDeclarationName,
   isSelfTarget,
   localHighlights,
   type DeclarationTarget,
@@ -360,6 +361,15 @@ export async function gotoTargets(view: EditorView, kind: GotoKind, at?: number)
   }
 }
 
+/** Whether the caret is on the name of a declaration, by the syntax tree (no language server wait). */
+async function onDeclarationName(view: EditorView, offset: number): Promise<boolean> {
+  const doc = docOf(view);
+  if (!doc) return false;
+  const pos = offsetToPos(view.state.doc, offset);
+  const at = await structure.nodeAt(doc.doc, { start: pos, end: pos }).catch(() => null);
+  return isDeclarationName(at);
+}
+
 async function gotoResolved(
   view: EditorView,
   kind: GotoKind,
@@ -374,7 +384,10 @@ async function gotoResolved(
     const before = view.state.doc;
     const plugin = await contributedNavigation(view, offset).catch(() => null);
     if (view.state.doc !== before || superseded()) return;
-    if (plugin) {
+    // ⌘B on a declaration shows its usages, also when a plugin links the name elsewhere (a
+    // MyBatis mapper method to its XML statement).
+    if (plugin && !(kind === "definition" && (await onDeclarationName(view, offset)))) {
+      if (superseded()) return;
       if (plugin.targets.length === 1) await navigateTo(plugin.targets[0]!);
       else {
         const items = await locationItems(plugin.targets);
@@ -1049,10 +1062,11 @@ type HighlightItem = { from: number; to: number; kind: Highlight["kind"] };
 
 const setHighlights = StateEffect.define<{ items: HighlightItem[]; sticky: boolean }>();
 
+const OCCURRENCE = "cm-lsp-occurrence";
 const KIND_CLASS = {
-  text: "cm-lsp-occurrence",
-  read: "cm-lsp-occurrence cm-lsp-occurrence-read",
-  write: "cm-lsp-occurrence cm-lsp-occurrence-write",
+  text: OCCURRENCE,
+  read: `${OCCURRENCE} ${OCCURRENCE}-read`,
+  write: `${OCCURRENCE} ${OCCURRENCE}-write`,
 };
 const marks = {
   text: Decoration.mark({ class: KIND_CLASS.text }),

src/editor/lsp/syntaxFallback.test.ts

@@ -45,6 +45,7 @@ provideEditorService({ openFile } as never);
 
 const fb = await import("./syntaxFallback");
 const { gotoTargets, navigationExtension, highlightUsages } = await import("./navigation");
+const { registerNavigationProvider } = await import("@/editor/navigationProviders");
 const { startRename, renameNamePart } = await import("./rename");
 const { lspDoc } = await import("./lsp");
 const { invalidateConfigurationNavigation } = await import("./configurationNavigation");
@@ -416,6 +417,48 @@ describe("navigation wiring", () => {
     expect(openFile).not.toHaveBeenCalled();
   });
 
+  it("shows usages on a declaration a plugin's index links elsewhere, and follows the link from a call", async () => {
+    // MyBatis Duo indexes the mapper method's name as a link to its XML statement.
+    const xml = { path: "/p/UserMapper.xml", range: r(3, 16, 24) };
+    const off = registerNavigationProvider(async (view) => {
+      const at = view.state.doc.toString().indexOf("findName");
+      return { from: at, to: at + 8, targets: [xml] };
+    });
+    try {
+      // The syntax tree puts the caret on the method's name; the host then answers both.
+      cmd.syntaxNodeAt.mockReturnValueOnce(
+        ok({
+          node: node("identifier", r(3, 11, 19), "name"),
+          ancestors: [node("method_declaration", { start: { line: 3, col: 4 }, end: { line: 3, col: 29 } })],
+        }),
+      );
+      cmd.lspGoto.mockReturnValueOnce(ok([xml, { path: "/p/UserMapper.java", range: r(3, 11, 19) }]));
+      const view = editor(
+        "package demo;\n\npublic interface UserMapper {\n    String findName(Long id);\n}\n",
+        "java",
+        58,
+        "/p/UserMapper.java",
+      );
+      await gotoTargets(view, "definition");
+      expect(executeAction).toHaveBeenCalledWith("find.showUsages");
+      expect(openFile).not.toHaveBeenCalled();
+
+      // A call: the plugin's link is followed without asking the language server.
+      executeAction.mockClear();
+      cmd.lspGoto.mockClear();
+      cmd.syntaxNodeAt.mockReturnValueOnce(
+        ok({ node: node("identifier", r(1, 26, 34), "name"), ancestors: [node("method_invocation", r(1, 24, 38))] }),
+      );
+      const call = editor("class S {\n  void f(UserMapper m) { m.findName(1L); }\n}\n", "java", 37, "/p/S.java");
+      await gotoTargets(call, "definition");
+      expect(openFile).toHaveBeenCalledWith("/p/UserMapper.xml", expect.objectContaining({ focus: true }));
+      expect(executeAction).not.toHaveBeenCalledWith("find.showUsages");
+      expect(cmd.lspGoto).not.toHaveBeenCalled();
+    } finally {
+      off();
+    }
+  });
+
   it("looks past a server answer that points at the import itself", async () => {
     cmd.lspGoto.mockReturnValueOnce(ok([{ path: "/p/a.py", range: r(0, 37, 43) }]));
     cmd.navIndexDefinitions.mockReturnValueOnce(ok([sym("logger", "variable", "/deps/torchtitan/tools/logging.py")]));

src/editor/lsp/syntaxFallback.ts

@@ -63,6 +63,14 @@ export function usageRole(at: NodeAt | null): UsageRole {
   return "other";
 }
 
+const DECLARATION = /(declaration|definition|declarator)$/;
+
+/** Whether the syntax tree puts the identifier at `at` as the name of a declaration (`int f()`'s `f`). */
+export function isDeclarationName(at: NodeAt | null): boolean {
+  const parent = at?.ancestors[0];
+  return !!parent && at.node.field === "name" && DECLARATION.test(parent.kind);
+}
+
 /** Index symbols that may be the declaration of `name` used in `role`. */
 export function filterSymbols(matches: readonly SymbolMatch[], name: string, role: UsageRole): SymbolMatch[] {
   return matches.filter((m) => {

src/editor/navigation/index.ts

@@ -22,7 +22,7 @@ import { gotoTestOrSubject, type TestNavDeps } from "./gotoTest";
 import { baseName, memberAt, methodStop, superMethods } from "./structureNav";
 import { tx } from "@/platform/i18n";
 
-const EDITOR_WHEN = "textEditorActive && (editorFocus || popupOpen || !toolWindowFocus)";
+const EDITOR_WHEN = "textEditorActive && (editorFocus || !toolWindowFocus)";
 
 /** A backend document id for `path` while `fn` runs (open editors are reused). */
 async function withDoc<T>(path: string, fn: (doc: number) => Promise<T>): Promise<T> {

src/features/code-insight/index.ts

@@ -26,7 +26,7 @@ import { ServerStatus } from "./ServerStatus";
 import { reportProblems } from "./problemsReport";
 import { installWorkspaceEditUndo } from "./workspaceUndo";
 
-const EDITOR_WHEN = "textEditorActive && (editorFocus || popupOpen || !toolWindowFocus)";
+const EDITOR_WHEN = "textEditorActive && (editorFocus || !toolWindowFocus)";
 
 function useErrorBadge(): number | null {
   return useProblems((s) => {

src/features/database/DatabaseView.test.tsx

@@ -5,6 +5,9 @@ import { executeAction } from "@/platform/actions";
 import { setContext } from "@/platform/context";
 import { registerDatabaseTreeActions } from "./treeActions";
 import { tablesKey, useDatabase } from "./store";
+import { tableInput } from "./tableInput";
+import { useEditorRegistry } from "@/editor/api";
+import { provideEditorService, provideToolWindowService, type EditorInput } from "@/workbench/contributions";
 
 vi.mock("@tanstack/react-virtual", () => ({
   useVirtualizer: ({ count }: { count: number }) => ({
@@ -108,6 +111,61 @@ describe("routine grouping", () => {
   });
 });
 
+describe("Select Opened File", () => {
+  const nextFrame = () => act(() => new Promise<void>((resolve) => requestAnimationFrame(() => resolve())));
+  let active: EditorInput | null = null;
+  const show = vi.fn();
+
+  beforeEach(() => {
+    provideEditorService({ activeInput: () => active } as never);
+    provideToolWindowService({ show } as never);
+    useDatabase.setState({
+      tables: {
+        [tablesKey("pg", "public")]: {
+          status: "ok",
+          value: [
+            { name: "people", kind: "table" },
+            { name: "adults", kind: "view" },
+          ],
+        },
+      },
+      schemas: { pg: { status: "ok", value: ["public", "audit"] } },
+      treeExpanded: new Set(),
+    });
+  });
+
+  afterEach(() => {
+    active = null;
+    useEditorRegistry.setState({ active: null });
+  });
+
+  it("selects the active table editor's view in the views folder", async () => {
+    render(<DatabaseView />);
+    active = tableInput("pg", "public", "adults");
+    await act(() => executeAction("db.selectOpened"));
+    await nextFrame();
+    expect(useDatabase.getState().selectedNode?.key).toBe("pg/public/views/adults");
+    expect(show).toHaveBeenCalledWith("database");
+    expect(document.activeElement).toBe(screen.getByRole("tree", { name: "Data sources" }));
+  });
+
+  it("selects the nearest shown ancestor of a dropped table, and a console's schema", async () => {
+    render(<DatabaseView />);
+    active = tableInput("pg", "public", "dropped");
+    await act(() => executeAction("db.selectOpened"));
+    await nextFrame();
+    expect(useDatabase.getState().selectedNode?.key).toBe("pg/public/tables");
+
+    const path = "/project/audit.sql";
+    useDatabase.setState({ consoles: { [path]: "pg" }, consoleSchemas: { [path]: "audit" } });
+    active = { kind: "file", key: path, path };
+    useEditorRegistry.setState({ active: { ctx: { path, language: "sql" } } as never });
+    await act(() => executeAction("db.selectOpened"));
+    await nextFrame();
+    expect(useDatabase.getState().selectedNode?.key).toBe("pg/audit");
+  });
+});
+
 describe("Expand All", () => {
   it("opens every loaded node and leaves unloaded ones closed", async () => {
     useDatabase.setState({

src/features/database/DatabaseView.tsx

@@ -143,12 +143,12 @@ export function DatabaseView() {
   useEffect(() => {
     if (!st.loaded) void loadSources();
   }, [st.loaded]);
-  // Go to Declaration from a console: the rows exist once the expanded nodes render.
+  // Go to Declaration from a console, Select Opened File: the rows exist once the expanded nodes render.
   useEffect(() => {
     if (!st.treeReveal) return;
-    const key = st.treeReveal.key;
+    const path = st.treeReveal.path;
     const frame = requestAnimationFrame(() => {
-      tree.current?.reveal(key);
+      path.toReversed().some((key) => tree.current?.reveal(key));
       tree.current?.focus();
     });
     return () => cancelAnimationFrame(frame);
@@ -683,10 +683,11 @@ function DatabaseToolbar() {
   );
 }
 
-/** Header controls (shown on hover, like IDEA's): Expand All, Collapse All. */
+/** Header controls (shown on hover, like IDEA's): Select Opened File, Expand All, Collapse All. */
 export function DatabaseHeaderActions() {
   return (
     <>
+      <IconButton icon="locate" action="db.selectOpened" size="small" iconSize={16} />
       <IconButton icon="expand-all" action="db.expandAll" size="small" iconSize={16} />
       <IconButton icon="collapse-all" action="db.collapseAll" size="small" iconSize={16} />
     </>

src/features/database/store.ts

@@ -25,9 +25,10 @@ import {
   type RequestId,
   type SqlStatement,
 } from "@/platform/ipc";
-import { editorsFor } from "@/editor/api";
+import { activeEditor, editorsFor } from "@/editor/api";
 import {
   editorService,
+  maybeEditorService,
   notifications,
   showServiceView,
   toolWindowService,
@@ -44,8 +45,11 @@ import {
   idleTargets,
   newSourceId,
   splitTarget,
+  targetOf,
 } from "./model";
 import { tableFolder, type DbNode } from "./nodes";
+import { SQL_LANGUAGE } from "./sqlLanguage";
+import { TABLE_KIND, type TableRef } from "./tableInput";
 import type { ExportData, ExportFormat } from "./export";
 import type { DbObjectRef } from "./objects";
 import { formatted } from "./sql/format";
@@ -180,7 +184,7 @@ interface DatabaseState {
   /** Expanded nodes of the Database tree. */
   treeExpanded: Set<string>;
   /** A tree node to select and scroll to (Go to Declaration from a console). */
-  treeReveal: { key: string; seq: number } | null;
+  treeReveal: { path: string[]; seq: number } | null;
   /** Last value entered per query parameter name. */
   paramValues: Record<string, string>;
   /** Data sources in manual-commit mode. */
@@ -604,13 +608,14 @@ export async function loadDetails(id: string, schema: string, table: string): Pr
 
 /**
  * Selects a table (or one of its columns) in the Database tool window,
- * loading and expanding the nodes that lead to it.
+ * loading and expanding the nodes that lead to it. Without `kind` the loaded
+ * tables tell whether it is a table or a view.
  */
 export async function revealInTree(
   id: string,
   schema: string,
   table: string,
-  kind: DbTableKind,
+  kind: DbTableKind | undefined,
   column?: string,
 ): Promise<void> {
   const loaded = (l: Loaded<unknown> | undefined) => l?.status === "ok";
@@ -632,20 +637,64 @@ export async function revealInTree(
   if (!loaded(useDatabase.getState().tables[tablesKey(id, schema)])) await loadTables(id, schema);
   if (column && !loaded(useDatabase.getState().details[detailsKey(id, schema, table)]))
     await loadDetails(id, schema, table);
+  const tables = useDatabase.getState().tables[tablesKey(id, schema)];
+  kind ??= (tables?.status === "ok" ? tables.value.find((t) => t.name === table)?.kind : undefined) ?? "table";
   const folder = `${id}/${schema}/${tableFolder(kind)}`;
   const tableKey = `${folder}/${table}`;
-  const open = [
-    sourceId,
-    ...databaseNode,
-    `${id}/${schema}`,
-    folder,
-    ...(column ? [tableKey, `${tableKey}/columns`] : []),
-  ];
+  selectInTree(
+    [sourceId, ...databaseNode, `${id}/${schema}`, folder, ...(column ? [tableKey, `${tableKey}/columns`] : [])],
+    column ? `${tableKey}/columns/${column}` : tableKey,
+  );
+}
+
+/**
+ * Expands `open` and selects node `key` in the Database tool window, showing it.
+ * A node the tree doesn't show (filtered out, dropped) selects its nearest shown ancestor.
+ */
+function selectInTree(open: string[], key: string) {
   useDatabase.setState((s) => ({
     treeExpanded: new Set([...s.treeExpanded, ...open]),
-    treeReveal: { key: column ? `${tableKey}/columns/${column}` : tableKey, seq: (s.treeReveal?.seq ?? 0) + 1 },
+    treeReveal: { path: [...open, key], seq: (s.treeReveal?.seq ?? 0) + 1 },
   }));
-  toolWindowService().show(DB_TOOL_WINDOW, true);
+  // Not `show(…, true)`: activation focuses the filter field after the view focuses the tree.
+  toolWindowService().show(DB_TOOL_WINDOW);
+}
+
+/**
+ * Select Opened File: the active table editor's table, else the schema (or
+ * database / data source) a SQL console runs in. A console reveals only nodes
+ * already loaded: it never connects.
+ */
+export async function revealOpened(): Promise<void> {
+  const input = maybeEditorService()?.activeInput?.();
+  if (input?.kind === TABLE_KIND) {
+    const { id, schema, table } = input.data as TableRef;
+    return revealInTree(id, schema, table, undefined);
+  }
+  const editor = activeEditor();
+  if (editor?.ctx.language !== SQL_LANGUAGE || (input && input.path !== editor.ctx.path)) return;
+  const target = consoleSource(editor.ctx.path);
+  if (!target) return;
+  const s = useDatabase.getState();
+  const { id: sourceId, database } = splitTarget(target);
+  const open: string[] = [];
+  let key = sourceId;
+  let nodeTarget = target;
+  if (listsDatabases(sourceById(sourceId))) {
+    const dbs = s.databases[sourceId];
+    const name = database ?? (dbs?.status === "ok" ? dbs.value.current : null);
+    if (dbs?.status !== "ok" || !name) return selectInTree(open, key);
+    open.push(key);
+    key = databaseKey(sourceId, name);
+    nodeTarget = targetOf(sourceId, name, dbs.value.current);
+  }
+  const schema = consoleSchema(editor.ctx.path);
+  const schemas = s.schemas[nodeTarget];
+  if (schema && schemas?.status === "ok" && schemas.value.includes(schema)) {
+    open.push(key);
+    key = `${nodeTarget}/${schema}`;
+  }
+  selectInTree(open, key);
 }
 
 const completionLoads = new Map<string, Promise<DbCompletion | null>>();

src/features/database/treeActions.ts

@@ -31,6 +31,7 @@ import {
   readableDdl,
   refresh,
   revealInTree,
+  revealOpened,
   runSql,
   sourceById,
   tablesKey,
@@ -485,6 +486,15 @@ export function registerDatabaseTreeActions(): () => void {
       title: "Separate Procedures and Functions",
       run: toggleSeparateProceduresAndFunctions,
     }),
+    tree({
+      id: "db.selectOpened",
+      title: "Select Opened File",
+      icon: "locate",
+      keywords: ["locate", "scroll from editor", "scroll from source", "select in database view"],
+      // From the editor: a user-assigned shortcut works outside the Database view too.
+      keyWhen: undefined,
+      run: () => void revealOpened(),
+    }),
     tree({
       id: "db.expandAll",
       title: "Expand All",

src/features/templates/index.ts

@@ -25,7 +25,7 @@ import { loadEmmet } from "./emmet/model";
 import { promptAbbreviation, UpdateTagDialogHost } from "./emmet/UpdateTagDialog";
 import { tx } from "@/platform/i18n";
 
-const EDITOR_WHEN = "textEditorActive && !editorReadOnly && (editorFocus || popupOpen || !toolWindowFocus)";
+const EDITOR_WHEN = "textEditorActive && !editorReadOnly && (editorFocus || !toolWindowFocus)";
 const MARKUP_PATH = /\.(html?|xhtml|shtml|vue|svelte|xml)$/i;
 
 async function updateTagWithEmmet() {

src/platform/actions.test.ts

@@ -1,5 +1,13 @@
 import { expect, it, vi } from "vitest";
-import { executeAction, executeActionOrThrow, registerAction, useRunningActions } from "./actions";
+import {
+  executeAction,
+  executeActionOrThrow,
+  getAction,
+  registerAction,
+  registerActions,
+  useActions,
+  useRunningActions,
+} from "./actions";
 
 const running = (id: string) => useRunningActions.getState().running.get(id) ?? 0;
 
@@ -91,3 +99,22 @@ it("checks argument-specific enablement before dispatch", async () => {
     dispose();
   }
 });
+
+it("registers a batch with one store update and disposes every action", () => {
+  const updates: number[] = [];
+  const off = useActions.subscribe((s) => updates.push(s.actions.size));
+  const dispose = registerActions([
+    { id: "test.batch.one", title: "One", run: () => {} },
+    { id: "test.batch.two", title: "Two", run: () => {} },
+  ]);
+  try {
+    expect(updates).toHaveLength(1);
+    expect(getAction("test.batch.one")?.title).toBe("One");
+    expect(getAction("test.batch.two")?.title).toBe("Two");
+  } finally {
+    dispose();
+    off();
+  }
+  expect(getAction("test.batch.one")).toBeUndefined();
+  expect(getAction("test.batch.two")).toBeUndefined();
+});

src/platform/actions.ts

@@ -116,10 +116,9 @@ useI18n.subscribe((s, prev) => {
   useActions.setState({ actions: new Map([...sources].map(([id, a]) => [id, localize(a)])) });
 });
 
-/** Registers an action; returns a disposer. Re-registering an id replaces it. */
-export function registerAction(action: Action): () => void {
+/** Adds `action` to the written sources; returns a disposer that removes it. */
+function addSource(action: Action): () => void {
   sources.set(action.id, action);
-  useActions.setState((s) => ({ actions: new Map(s.actions).set(action.id, localize(action)) }));
   return () => {
     if (sources.get(action.id) !== action) return;
     sources.delete(action.id);
@@ -131,8 +130,24 @@ export function registerAction(action: Action): () => void {
   };
 }
 
+/** Registers an action; returns a disposer. Re-registering an id replaces it. */
+export function registerAction(action: Action): () => void {
+  const dispose = addSource(action);
+  useActions.setState((s) => ({ actions: new Map(s.actions).set(action.id, localize(action)) }));
+  return dispose;
+}
+
 export function registerActions(actions: Action[]): () => void {
-  const disposers = actions.map(registerAction);
+  const disposers = actions.map(addSource);
+  // One state update for the batch: features register dozens of actions at start-up,
+  // and cloning the whole map per action made that O(n²).
+  if (actions.length) {
+    useActions.setState((s) => {
+      const next = new Map(s.actions);
+      for (const action of actions) next.set(action.id, localize(action));
+      return { actions: next };
+    });
+  }
   return () => disposers.forEach((d) => d());
 }
 

src/platform/keymaps/eclipse.test.ts

@@ -223,7 +223,7 @@ it("renames in the project view although the preset shares Alt+Shift+R with the
   const dbRename = vi.fn();
   const refactorRename = vi.fn();
   // The claimants as they ship: `when` + `keyWhen` exactly as registered.
-  const EDITOR = "textEditorActive && (editorFocus || popupOpen || !toolWindowFocus)";
+  const EDITOR = "textEditorActive && (editorFocus || !toolWindowFocus)";
   const disposers = [
     registerAction({
       id: "project.rename",

src/platform/keymaps/intellij-macos.ts

@@ -404,6 +404,7 @@ export const intellijMacos: Record<string, string[]> = {
   "db.runSqlScript": [],
   "db.sqlScript": [],
   "db.goToReferencedTable": [],
+  "db.selectOpened": [],
   "db.expandAll": [],
   "db.collapseAll": [],
   // Terminal (keyWhen: terminalFocus); after VCS Update / Go to Test so it wins there.

src/platform/keymaps/intellij-windows.ts

@@ -402,6 +402,7 @@ export const intellijWindows: Record<string, string[]> = {
   "db.runSqlScript": [],
   "db.sqlScript": [],
   "db.goToReferencedTable": [],
+  "db.selectOpened": [],
   "db.expandAll": [],
   "db.collapseAll": [],
   // Terminal (keyWhen: terminalFocus); after VCS Update / Go to Test so it wins there.

src/platform/keymaps/vscode-macos.ts

@@ -392,6 +392,7 @@ export const vscodeMacos: Record<string, string[]> = {
   "db.runSqlScript": [],
   "db.sqlScript": [],
   "db.goToReferencedTable": [],
+  "db.selectOpened": [],
   "db.expandAll": [],
   "db.collapseAll": [],
   // Find in Files popup (findPopupOpen): after the editor's keys, so these win while it is open.

src/ui/Tree.test.tsx

@@ -3,6 +3,8 @@ import { createRef } from "react";
 import { act, fireEvent, render, screen, within } from "@testing-library/react";
 import { Tree, type TreeHandle } from "./Tree";
 import { getContext } from "@/platform/context";
+import { registerAction } from "@/platform/actions";
+import { installKeyboardDispatcher, useKeymap } from "@/platform/keymap";
 
 interface N {
   id: string;
@@ -251,6 +253,30 @@ describe("Tree speed search", () => {
     expect(labels(tree)).toContain("App.tsx");
   });
 
+  it("⌘⌫ erases the query and ⌥⌫ its last word instead of running the view's ⌘⌫ action", () => {
+    const drop = vi.fn();
+    useKeymap.setState({ preset: "intellij-macos", overrides: { "test.drop": ["Meta+Backspace", "Alt+Backspace"] } });
+    const dispose = [registerAction({ id: "test.drop", title: "Drop", run: drop }), installKeyboardDispatcher()];
+    try {
+      const { tree, lead, key } = setup({ defaultExpanded: ["src", "main"] });
+      key("ArrowDown");
+      for (const c of "index.t") key(c);
+      expect(lead()).toBe("index.ts");
+      key("Backspace", { altKey: true });
+      expect(screen.getByRole("status")).toHaveTextContent(/^index\.$/);
+      key("Backspace", { metaKey: true });
+      expect(screen.queryByRole("status")).toBeNull();
+      expect(drop).not.toHaveBeenCalled();
+      // Without a query the shortcut reaches the view again.
+      key("Backspace", { metaKey: true });
+      expect(drop).toHaveBeenCalledOnce();
+      expect(tree).toHaveFocus();
+    } finally {
+      dispose.forEach((d) => d());
+      useKeymap.setState({ overrides: {} });
+    }
+  });
+
   it("filter mode hides non-matching rows but keeps ancestors", () => {
     const { tree, key } = setup({ defaultExpanded: ["src", "main"], speedSearchMode: "filter" });
     key("ArrowDown");

src/ui/Tree.tsx

@@ -31,6 +31,7 @@ import { acquirePopup } from "./popupState";
 import styles from "./Tree.module.css";
 import { T } from "./T";
 import { setContext } from "@/platform/context";
+import { registerKeyClaim } from "@/platform/keymap";
 import { useGivenTx } from "@/platform/i18n";
 import { useTreeReorder, type TreeReorder } from "./treeReorder";
 import { startPointerDrag, type DragData } from "./pointerDrag";
@@ -61,8 +62,8 @@ export interface TreeOccurrence {
 
 export interface TreeHandle {
   focus(): void;
-  /** Selects `key` (must be visible, i.e. ancestors expanded) and scrolls to it. */
-  reveal(key: string): void;
+  /** Selects `key` (must be visible, i.e. ancestors expanded) and scrolls to it; false when no row has `key`. */
+  reveal(key: string): boolean;
   leadKey(): string | null;
   /** Selects the next (1) / previous (-1) row, for a filter field that keeps the focus (Settings search). */
   moveSelection(dir: 1 | -1): void;
@@ -367,10 +368,18 @@ export function Tree<T>(props: TreeProps<T>) {
     pendingScrollToLead.current = null;
   }, [lead, indexOfKey, virtualizer]);
 
-  // Speed search owns Escape while active.
+  // Speed search owns Escape while active, and ⌫ with any modifier: the query is edited like a
+  // text field instead of the view's shortcuts running (⌘⌫ is Drop… in the Database view).
   useEffect(() => {
     if (!query) return;
-    return acquirePopup();
+    const release = acquirePopup();
+    const unclaim = registerKeyClaim(
+      (e) => e.key === "Backspace" && e.target instanceof Node && !!scrollRef.current?.contains(e.target),
+    );
+    return () => {
+      release();
+      unclaim();
+    };
   }, [query]);
 
   const setExpanded = (row: Row<T>, open: boolean) => {
@@ -420,10 +429,11 @@ export function Tree<T>(props: TreeProps<T>) {
     focus: () => scrollRef.current?.focus(),
     reveal: (key: string) => {
       const i = indexOfKey.get(key);
-      if (i === undefined) return;
+      if (i === undefined) return false;
       setAnchor(key);
       commitSelection(new Set([key]), key);
       virtualizer.scrollToIndex(i, { align: "center" });
+      return true;
     },
     leadKey: () => lead,
     moveSelection: (dir: 1 | -1) => {
@@ -523,7 +533,8 @@ export function Tree<T>(props: TreeProps<T>) {
         break;
       case "Backspace":
         if (!query) return;
-        setQuery(query.slice(0, -1));
+        // ⌘⌫ erases the query, ⌥⌫ / Ctrl+⌫ its last word, as in a text field.
+        setQuery(e.metaKey ? "" : e.altKey || e.ctrlKey ? query.replace(/\w*\W*$/, "") : query.slice(0, -1));
         break;
       case "ArrowDown":
       case "ArrowUp": {

src/ui/icons.tsx

@@ -179,6 +179,7 @@ const ICONS = {
   "file-asciidoc": "openidea/fileTypes/asciidoc",
   "file-d": "openidea/fileTypes/d",
   "file-prisma": "openidea/fileTypes/prisma",
+  "file-slint": "openidea/fileTypes/slint",
   "file-dart": "openidea/fileTypes/dart",
   "file-elixir": "openidea/fileTypes/elixir",
   "file-erlang": "openidea/fileTypes/erlang",
@@ -1107,6 +1108,7 @@ const EXT_ICONS = table({
   "file-asciidoc": "adoc asciidoc",
   "file-d": "d di",
   "file-prisma": "prisma",
+  "file-slint": "slint",
   "file-dart": "dart",
   "file-elixir": "ex exs",
   "file-erlang": "erl hrl escript app.src",

src/ui/openidea/fileTypes/slint.svg

@@ -0,0 +1,3 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g stroke-linejoin="round"><path d="M14 4C14 2.89543 13.1046 2 12 2H4C2.89543 2 2 2.89543 2 4V12C2 13.1046 2.89543 14 4 14H12C13.1046 14 14 13.1046 14 12V4Z" fill="#2379F4"/><path transform="translate(5 3.5)" d="M5.5 1.6C5.1 0.9 4.3 0.5 3.4 0.5H2.6C1.4 0.5 0.5 1.3 0.5 2.4C0.5 3.5 1.3 3.9 2.5 4.2L3.5 4.4C4.7 4.7 5.5 5.1 5.5 6.3C5.5 7.5 4.6 8.5 3.4 8.5H2.6C1.6 8.5 0.9 8 0.5 7.4" stroke="#2B2D30"/></g>
+</svg>

src/ui/openidea/fileTypes/slint_dark.svg

@@ -0,0 +1,3 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g stroke-linejoin="round"><path d="M14 4C14 2.89543 13.1046 2 12 2H4C2.89543 2 2 2.89543 2 4V12C2 13.1046 2.89543 14 4 14H12C13.1046 14 14 13.1046 14 12V4Z" fill="#4A90F5"/><path transform="translate(5 3.5)" d="M5.5 1.6C5.1 0.9 4.3 0.5 3.4 0.5H2.6C1.4 0.5 0.5 1.3 0.5 2.4C0.5 3.5 1.3 3.9 2.5 4.2L3.5 4.4C4.7 4.7 5.5 5.1 5.5 6.3C5.5 7.5 4.6 8.5 3.4 8.5H2.6C1.6 8.5 0.9 8 0.5 7.4" stroke="#2B2D30"/></g>
+</svg>