wip

#25944 but now with Vim mode off.

Release Notes:

- N/A

.cargo/config.toml

@@ -26,3 +26,6 @@ rustflags = [
     "-C",
     "target-feature=+crt-static", # This fixes the linking issue when compiling livekit on Windows
 ]
+
+[env]
+MACOSX_DEPLOYMENT_TARGET = "10.15.7"

Cargo.lock

@@ -8134,6 +8134,7 @@ checksum = "d3f763c1041eff92ffb5d7169968a327e1ed2ebfe425dac0ee5a35f29082534b"
 dependencies = [
  "bstr",
  "either",
+ "futures-util",
  "mlua-sys",
  "num-traits",
  "parking_lot",
@@ -11915,12 +11916,18 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "assistant_tool",
+ "collections",
+ "futures 0.3.31",
  "gpui",
  "mlua",
+ "parking_lot",
+ "project",
  "regex",
  "schemars",
  "serde",
  "serde_json",
+ "settings",
+ "util",
  "workspace",
 ]
 

Cargo.toml

@@ -452,7 +452,7 @@ livekit = { git = "https://github.com/zed-industries/livekit-rust-sdks", rev = "
 ], default-features = false }
 log = { version = "0.4.16", features = ["kv_unstable_serde", "serde"] }
 markup5ever_rcdom = "0.3.0"
-mlua = { version = "0.10", features = ["lua54", "vendored"] }
+mlua = { version = "0.10", features = ["lua54", "vendored", "async", "send"] }
 nanoid = "0.4"
 nbformat = { version = "0.10.0" }
 nix = "0.29"

assets/keymaps/default-linux.json

@@ -105,7 +105,6 @@
       "ctrl-shift-home": "editor::SelectToBeginning",
       "ctrl-shift-end": "editor::SelectToEnd",
       "ctrl-a": "editor::SelectAll",
-      "ctrl-l": "editor::SelectLine",
       "ctrl-shift-i": "editor::Format",
       // "cmd-shift-left": ["editor::SelectToBeginningOfLine", {"stop_at_soft_wraps": true, "stop_at_indent": true }],
       // "ctrl-shift-a": ["editor::SelectToBeginningOfLine", { "stop_at_soft_wraps": true, "stop_at_indent": true }],
@@ -471,17 +470,15 @@
       "ctrl-shift-d": "editor::DuplicateLineDown",
       "ctrl-shift-j": "editor::JoinLines",
       "ctrl-alt-backspace": "editor::DeleteToPreviousSubwordStart",
-      "ctrl-alt-h": "editor::DeleteToPreviousSubwordStart",
       "ctrl-alt-delete": "editor::DeleteToNextSubwordEnd",
-      "ctrl-alt-d": "editor::DeleteToNextSubwordEnd",
-      "ctrl-alt-left": "editor::MoveToPreviousSubwordStart",
-      // "ctrl-alt-b": "editor::MoveToPreviousSubwordStart",
-      "ctrl-alt-right": "editor::MoveToNextSubwordEnd",
-      "ctrl-alt-f": "editor::MoveToNextSubwordEnd",
-      "ctrl-alt-shift-left": "editor::SelectToPreviousSubwordStart",
-      "ctrl-alt-shift-b": "editor::SelectToPreviousSubwordStart",
-      "ctrl-alt-shift-right": "editor::SelectToNextSubwordEnd",
-      "ctrl-alt-shift-f": "editor::SelectToNextSubwordEnd"
+      "ctrl-alt-left": "editor::MoveToPreviousSubwordStart", // macos sublime
+      "ctrl-alt-right": "editor::MoveToNextSubwordStart", // macos sublime
+      "alt-left": "editor::MoveToPreviousWordStart",
+      "alt-right": "editor::MoveToNextWordEnd",
+      "ctrl-l": "editor::SelectLine", // goes downwards
+      //"alt-l": "editor::SelectLineUp",
+      "alt-shift-left": "editor::SelectToPreviousSubwordStart",
+      "alt-shift-right": "editor::SelectToNextSubwordEnd"
     }
   },
   // Bindings from Atom

assets/keymaps/linux/sublime_text.json

@@ -28,6 +28,10 @@
   {
     "context": "Editor",
     "bindings": {
+      "alt-left": "editor::MoveToPreviousSubwordStart",
+      "alt-right": "editor::MoveToNextSubwordStart",
+      "alt-shift-left": "editor::SelectToPreviousSubwordStart",
+      "alt-shift-right": "editor::SelectToNextSubwordEnd",
       "ctrl-alt-up": "editor::AddSelectionAbove",
       "ctrl-alt-down": "editor::AddSelectionBelow",
       "ctrl-shift-up": "editor::MoveLineUp",

assets/settings/default.json

@@ -1055,7 +1055,6 @@
   // }
   //
   "file_types": {
-    "Plain Text": ["txt"],
     "JSONC": ["**/.zed/**/*.json", "**/zed/**/*.json", "**/Zed/**/*.json", "**/.vscode/**/*.json"],
     "Shell Script": [".env.*"]
   },

crates/assistant2/src/active_thread.rs

@@ -173,6 +173,8 @@ impl ActiveThread {
 
         text_style.refine(&TextStyleRefinement {
             font_family: Some(theme_settings.ui_font.family.clone()),
+            font_fallbacks: theme_settings.ui_font.fallbacks.clone(),
+            font_features: Some(theme_settings.ui_font.features.clone()),
             font_size: Some(ui_font_size.into()),
             color: Some(cx.theme().colors().text),
             ..Default::default()
@@ -207,6 +209,8 @@ impl ActiveThread {
                 },
                 text: Some(TextStyleRefinement {
                     font_family: Some(theme_settings.buffer_font.family.clone()),
+                    font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
+                    font_features: Some(theme_settings.buffer_font.features.clone()),
                     font_size: Some(buffer_font_size.into()),
                     ..Default::default()
                 }),
@@ -214,6 +218,8 @@ impl ActiveThread {
             },
             inline_code: TextStyleRefinement {
                 font_family: Some(theme_settings.buffer_font.family.clone()),
+                font_fallbacks: theme_settings.buffer_font.fallbacks.clone(),
+                font_features: Some(theme_settings.buffer_font.features.clone()),
                 font_size: Some(buffer_font_size.into()),
                 background_color: Some(colors.editor_foreground.opacity(0.1)),
                 ..Default::default()

crates/assistant2/src/message_editor.rs

@@ -389,6 +389,7 @@ impl Render for MessageEditor {
                                 let text_style = TextStyle {
                                     color: cx.theme().colors().text,
                                     font_family: settings.ui_font.family.clone(),
+                                    font_fallbacks: settings.ui_font.fallbacks.clone(),
                                     font_features: settings.ui_font.features.clone(),
                                     font_size: font_size.into(),
                                     font_weight: settings.ui_font.weight,

crates/editor/src/editor_tests.rs

@@ -16413,6 +16413,199 @@ async fn test_folding_buffer_when_multibuffer_has_only_one_excerpt(cx: &mut Test
     );
 }
 
+#[gpui::test]
+async fn test_multi_buffer_navigation_with_folded_buffers(cx: &mut TestAppContext) {
+    init_test(cx, |_| {});
+    cx.update(|cx| {
+        let default_key_bindings = settings::KeymapFile::load_asset_allow_partial_failure(
+            "keymaps/default-linux.json",
+            cx,
+        )
+        .unwrap();
+        cx.bind_keys(default_key_bindings);
+    });
+
+    let (editor, cx) = cx.add_window_view(|window, cx| {
+        let multi_buffer = MultiBuffer::build_multi(
+            [
+                ("a0\nb0\nc0\nd0\ne0\n", vec![Point::row_range(0..2)]),
+                ("a1\nb1\nc1\nd1\ne1\n", vec![Point::row_range(0..2)]),
+                ("a2\nb2\nc2\nd2\ne2\n", vec![Point::row_range(0..2)]),
+                ("a3\nb3\nc3\nd3\ne3\n", vec![Point::row_range(0..2)]),
+            ],
+            cx,
+        );
+        let mut editor = Editor::new(
+            EditorMode::Full,
+            multi_buffer.clone(),
+            None,
+            true,
+            window,
+            cx,
+        );
+
+        let buffer_ids = multi_buffer.read(cx).excerpt_buffer_ids();
+        // fold all but the second buffer, so that we test navigating between two
+        // adjacent folded buffers, as well as folded buffers at the start and
+        // end the multibuffer
+        editor.fold_buffer(buffer_ids[0], cx);
+        editor.fold_buffer(buffer_ids[2], cx);
+        editor.fold_buffer(buffer_ids[3], cx);
+
+        editor
+    });
+    cx.simulate_resize(size(px(1000.), px(1000.)));
+
+    let mut cx = EditorTestContext::for_editor_in(editor.clone(), cx).await;
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        ˇ[FOLDED]
+        [EXCERPT]
+        a1
+        b1
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    cx.simulate_keystroke("down");
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        ˇa1
+        b1
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    cx.simulate_keystroke("down");
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        a1
+        ˇb1
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    cx.simulate_keystroke("down");
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        a1
+        b1
+        ˇ[EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    cx.simulate_keystroke("down");
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        a1
+        b1
+        [EXCERPT]
+        ˇ[FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    for _ in 0..5 {
+        cx.simulate_keystroke("down");
+        cx.assert_excerpts_with_selections(indoc! {"
+            [EXCERPT]
+            [FOLDED]
+            [EXCERPT]
+            a1
+            b1
+            [EXCERPT]
+            [FOLDED]
+            [EXCERPT]
+            ˇ[FOLDED]
+            "
+        });
+    }
+
+    cx.simulate_keystroke("up");
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        a1
+        b1
+        [EXCERPT]
+        ˇ[FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    cx.simulate_keystroke("up");
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        a1
+        b1
+        ˇ[EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    cx.simulate_keystroke("up");
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        a1
+        ˇb1
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    cx.simulate_keystroke("up");
+    cx.assert_excerpts_with_selections(indoc! {"
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        ˇa1
+        b1
+        [EXCERPT]
+        [FOLDED]
+        [EXCERPT]
+        [FOLDED]
+        "
+    });
+    for _ in 0..5 {
+        cx.simulate_keystroke("up");
+        cx.assert_excerpts_with_selections(indoc! {"
+            [EXCERPT]
+            ˇ[FOLDED]
+            [EXCERPT]
+            a1
+            b1
+            [EXCERPT]
+            [FOLDED]
+            [EXCERPT]
+            [FOLDED]
+            "
+        });
+    }
+}
+
 #[gpui::test]
 async fn test_inline_completion_text(cx: &mut TestAppContext) {
     init_test(cx, |_| {});

crates/editor/src/element.rs

@@ -1691,7 +1691,7 @@ impl EditorElement {
             let pos_y = content_origin.y
                 + line_height * (row.0 as f32 - scroll_pixel_position.y / line_height);
 
-            let window_ix = row.minus(start_row) as usize;
+            let window_ix = row.0.saturating_sub(start_row.0) as usize;
             let pos_x = {
                 let crease_trailer_layout = &crease_trailers[window_ix];
                 let line_layout = &line_layouts[window_ix];
@@ -4349,6 +4349,11 @@ impl EditorElement {
     fn paint_gutter_diff_hunks(layout: &mut EditorLayout, window: &mut Window, cx: &mut App) {
         let is_light = cx.theme().appearance().is_light();
 
+        let hunk_style = ProjectSettings::get_global(cx)
+            .git
+            .hunk_style
+            .unwrap_or_default();
+
         if layout.display_hunks.is_empty() {
             return;
         }
@@ -4412,9 +4417,20 @@ impl EditorElement {
                 if let Some((hunk_bounds, mut background_color, corner_radii, secondary_status)) =
                     hunk_to_paint
                 {
-                    if secondary_status.has_secondary_hunk() {
-                        background_color =
-                            background_color.opacity(if is_light { 0.2 } else { 0.32 });
+                    match hunk_style {
+                        GitHunkStyleSetting::Transparent | GitHunkStyleSetting::Pattern => {
+                            if secondary_status.has_secondary_hunk() {
+                                background_color =
+                                    background_color.opacity(if is_light { 0.2 } else { 0.32 });
+                            }
+                        }
+                        GitHunkStyleSetting::StagedPattern
+                        | GitHunkStyleSetting::StagedTransparent => {
+                            if !secondary_status.has_secondary_hunk() {
+                                background_color =
+                                    background_color.opacity(if is_light { 0.2 } else { 0.32 });
+                            }
+                        }
                     }
 
                     // Flatten the background color with the editor color to prevent
@@ -6734,10 +6750,10 @@ impl Element for EditorElement {
                         .update(cx, |editor, cx| editor.highlighted_display_rows(window, cx));
 
                     let is_light = cx.theme().appearance().is_light();
-                    let use_pattern = ProjectSettings::get_global(cx)
+                    let hunk_style = ProjectSettings::get_global(cx)
                         .git
                         .hunk_style
-                        .map_or(false, |style| matches!(style, GitHunkStyleSetting::Pattern));
+                        .unwrap_or_default();
 
                     for (ix, row_info) in row_infos.iter().enumerate() {
                         let Some(diff_status) = row_info.diff_status else {
@@ -6757,20 +6773,39 @@ impl Element for EditorElement {
 
                         let unstaged = diff_status.has_secondary_hunk();
                         let hunk_opacity = if is_light { 0.16 } else { 0.12 };
+                        let slash_width = line_height.0 / 1.5; // ~16 by default
 
-                        let staged_background =
-                            solid_background(background_color.opacity(hunk_opacity));
-                        let unstaged_background = if use_pattern {
-                            pattern_slash(
-                                background_color.opacity(hunk_opacity),
-                                window.rem_size().0 * 1.125, // ~18 by default
-                            )
-                        } else {
-                            solid_background(background_color.opacity(if is_light {
-                                0.08
-                            } else {
-                                0.04
-                            }))
+                        let staged_background = match hunk_style {
+                            GitHunkStyleSetting::Transparent | GitHunkStyleSetting::Pattern => {
+                                solid_background(background_color.opacity(hunk_opacity))
+                            }
+                            GitHunkStyleSetting::StagedPattern => {
+                                pattern_slash(background_color.opacity(hunk_opacity), slash_width)
+                            }
+                            GitHunkStyleSetting::StagedTransparent => {
+                                solid_background(background_color.opacity(if is_light {
+                                    0.08
+                                } else {
+                                    0.04
+                                }))
+                            }
+                        };
+
+                        let unstaged_background = match hunk_style {
+                            GitHunkStyleSetting::Transparent => {
+                                solid_background(background_color.opacity(if is_light {
+                                    0.08
+                                } else {
+                                    0.04
+                                }))
+                            }
+                            GitHunkStyleSetting::Pattern => {
+                                pattern_slash(background_color.opacity(hunk_opacity), slash_width)
+                            }
+                            GitHunkStyleSetting::StagedPattern
+                            | GitHunkStyleSetting::StagedTransparent => {
+                                solid_background(background_color.opacity(hunk_opacity))
+                            }
                         };
 
                         let background = if unstaged {

crates/editor/src/test/editor_test_context.rs

@@ -429,12 +429,14 @@ impl EditorTestContext {
                 if expected_selections.len() > 0 {
                     assert!(
                         is_selected,
-                        "excerpt {} should be selected. Got {:?}",
-                        ix,
-                        self.editor_state()
+                        "excerpt {ix} should be selected. got {:?}",
+                        self.editor_state(),
                     );
                 } else {
-                    assert!(!is_selected, "excerpt {} should not be selected", ix);
+                    assert!(
+                        !is_selected,
+                        "excerpt {ix} should not be selected, got: {selections:?}",
+                    );
                 }
                 continue;
             }

crates/git_ui/src/commit_message_prompt.txt

@@ -4,7 +4,7 @@ If you can accurately express the change in just the subject line, don't include
 
 Don't repeat information from the subject line in the message body.
 
-Only return the commit message in your response. Do not include any additional meta-commentary about the task.
+Only return the commit message in your response. Do not include any additional meta-commentary about the task. Do not include the raw diff output in the commit message.
 
 Follow good Git style:
 

crates/git_ui/src/git_panel.rs

@@ -374,7 +374,7 @@ impl GitPanel {
             tracked_count: 0,
             tracked_staged_count: 0,
             update_visible_entries_task: Task::ready(()),
-            width: Some(px(360.)),
+            width: None,
             context_menu: None,
             workspace,
             modal_open: false,

crates/git_ui/src/project_diff.rs

@@ -138,6 +138,7 @@ impl ProjectDiff {
                 window,
                 cx,
             );
+            diff_display_editor.disable_inline_diagnostics();
             diff_display_editor.set_expand_all_diff_hunks(cx);
             diff_display_editor.register_addon(GitPanelAddon {
                 workspace: workspace.downgrade(),

crates/markdown/src/markdown.rs

@@ -736,7 +736,7 @@ impl Element for MarkdownElement {
                                 markdown_end,
                             );
                         }
-                        _ => log::error!("unsupported markdown tag {:?}", tag),
+                        _ => log::debug!("unsupported markdown tag {:?}", tag),
                     }
                 }
                 MarkdownEvent::End(tag) => match tag {
@@ -853,7 +853,7 @@ impl Element for MarkdownElement {
                     MarkdownTagEnd::TableCell => {
                         builder.pop_div();
                     }
-                    _ => log::error!("unsupported markdown tag end: {:?}", tag),
+                    _ => log::debug!("unsupported markdown tag end: {:?}", tag),
                 },
                 MarkdownEvent::Text(parsed) => {
                     builder.push_text(parsed, range.start);

crates/multi_buffer/src/multi_buffer.rs

@@ -3523,10 +3523,7 @@ impl MultiBufferSnapshot {
     ) -> impl Iterator<Item = MultiBufferDiffHunk> + '_ {
         let query_range = range.start.to_point(self)..range.end.to_point(self);
         self.lift_buffer_metadata(query_range.clone(), move |buffer, buffer_range| {
-            let Some(diff) = self.diffs.get(&buffer.remote_id()) else {
-                log::debug!("no diff found for {:?}", buffer.remote_id());
-                return None;
-            };
+            let diff = self.diffs.get(&buffer.remote_id())?;
             let buffer_start = buffer.anchor_before(buffer_range.start);
             let buffer_end = buffer.anchor_after(buffer_range.end);
             Some(

crates/project/src/project_settings.rs

@@ -212,6 +212,10 @@ pub enum GitHunkStyleSetting {
     Transparent,
     /// Show unstaged hunks with a pattern background
     Pattern,
+    /// Show staged hunks with a pattern background
+    StagedPattern,
+    /// Show staged hunks with a pattern background
+    StagedTransparent,
 }
 
 #[derive(Clone, Copy, Debug, Default, Serialize, Deserialize, JsonSchema)]

crates/scripting_tool/Cargo.toml

@@ -15,10 +15,23 @@ doctest = false
 [dependencies]
 anyhow.workspace = true
 assistant_tool.workspace = true
+collections.workspace = true
+futures.workspace = true
 gpui.workspace = true
 mlua.workspace = true
+parking_lot.workspace = true
+project.workspace = true
+regex.workspace = true
 schemars.workspace = true
 serde.workspace = true
 serde_json.workspace = true
+settings.workspace = true
+util.workspace = true
 workspace.workspace = true
-regex.workspace = true
+
+[dev-dependencies]
+collections = { workspace = true, features = ["test-support"] }
+gpui = { workspace = true, features = ["test-support"] }
+project = { workspace = true, features = ["test-support"] }
+settings = { workspace = true, features = ["test-support"] }
+workspace = { workspace = true, features = ["test-support"] }

crates/scripting_tool/src/scripting_tool.rs

@@ -1,16 +1,12 @@
-use anyhow::anyhow;
+mod session;
+
+pub(crate) use session::*;
+
 use assistant_tool::{Tool, ToolRegistry};
 use gpui::{App, AppContext as _, Task, WeakEntity, Window};
-use mlua::{Function, Lua, MultiValue, Result, UserData, UserDataMethods};
 use schemars::JsonSchema;
 use serde::Deserialize;
-use std::{
-    cell::RefCell,
-    collections::HashMap,
-    path::{Path, PathBuf},
-    rc::Rc,
-    sync::Arc,
-};
+use std::sync::Arc;
 use workspace::Workspace;
 
 pub fn init(cx: &App) {
@@ -31,20 +27,7 @@ impl Tool for ScriptingTool {
     }
 
     fn description(&self) -> String {
-        r#"You can write a Lua script and I'll run it on my code base and tell you what its output was,
-including both stdout as well as the git diff of changes it made to the filesystem. That way,
-you can get more information about the code base, or make changes to the code base directly.
-The lua script will have access to `io` and it will run with the current working directory being in
-the root of the code base, so you can use it to explore, search, make changes, etc. You can also have
-the script print things, and I'll tell you what the output was. Note that `io` only has `open`, and
-then the file it returns only has the methods read, write, and close - it doesn't have popen or
-anything else. Also, I'm going to be putting this Lua script into JSON, so please don't use Lua's
-double quote syntax for string literals - use one of Lua's other syntaxes for string literals, so I
-don't have to escape the double quotes. There will be a global called `search` which accepts a regex
-(it's implemented using Rust's regex crate, so use that regex syntax) and runs that regex on the contents
-of every file in the code base (aside from gitignored files), then returns an array of tables with two
-fields: "path" (the path to the file that had the matches) and "matches" (an array of strings, with each
-string being a match that was found within the file)."#.into()
+        include_str!("scripting_tool_description.txt").into()
     }
 
     fn input_schema(&self) -> serde_json::Value {
@@ -59,724 +42,22 @@ string being a match that was found within the file)."#.into()
         _window: &mut Window,
         cx: &mut App,
     ) -> Task<anyhow::Result<String>> {
-        let root_dir = workspace.update(cx, |workspace, cx| {
-            let first_worktree = workspace
-                .visible_worktrees(cx)
-                .next()
-                .ok_or_else(|| anyhow!("no worktrees"))?;
-            workspace
-                .absolute_path_of_worktree(first_worktree.read(cx).id(), cx)
-                .ok_or_else(|| anyhow!("no worktree root"))
-        });
-        let root_dir = match root_dir {
-            Ok(root_dir) => root_dir,
-            Err(err) => return Task::ready(Err(err)),
-        };
-        let root_dir = match root_dir {
-            Ok(root_dir) => root_dir,
-            Err(err) => return Task::ready(Err(err)),
-        };
         let input = match serde_json::from_value::<ScriptingToolInput>(input) {
             Err(err) => return Task::ready(Err(err.into())),
             Ok(input) => input,
         };
-        let lua_script = input.lua_script;
-        cx.background_spawn(async move {
-            let fs_changes = HashMap::new();
-            let output = run_sandboxed_lua(&lua_script, fs_changes, root_dir)
-                .map_err(|err| anyhow!(format!("{err}")))?;
-            let output = output.printed_lines.join("\n");
+        let Ok(project) = workspace.read_with(cx, |workspace, _cx| workspace.project().clone())
+        else {
+            return Task::ready(Err(anyhow::anyhow!("No project found")));
+        };
 
+        let session = cx.new(|cx| Session::new(project, cx));
+        let lua_script = input.lua_script;
+        let script = session.update(cx, |session, cx| session.run_script(lua_script, cx));
+        cx.spawn(|_cx| async move {
+            let output = script.await?.stdout;
+            drop(session);
             Ok(format!("The script output the following:\n{output}"))
         })
     }
 }
-
-const SANDBOX_PREAMBLE: &str = include_str!("sandbox_preamble.lua");
-
-struct FileContent(RefCell<Vec<u8>>);
-
-impl UserData for FileContent {
-    fn add_methods<M: UserDataMethods<Self>>(_methods: &mut M) {
-        // FileContent doesn't have any methods so far.
-    }
-}
-
-/// Sandboxed print() function in Lua.
-fn print(lua: &Lua, printed_lines: Rc<RefCell<Vec<String>>>) -> Result<Function> {
-    lua.create_function(move |_, args: MultiValue| {
-        let mut string = String::new();
-
-        for arg in args.into_iter() {
-            // Lua's `print()` prints tab characters between each argument.
-            if !string.is_empty() {
-                string.push('\t');
-            }
-
-            // If the argument's to_string() fails, have the whole function call fail.
-            string.push_str(arg.to_string()?.as_str())
-        }
-
-        printed_lines.borrow_mut().push(string);
-
-        Ok(())
-    })
-}
-
-fn search(
-    lua: &Lua,
-    _fs_changes: Rc<RefCell<HashMap<PathBuf, Vec<u8>>>>,
-    root_dir: PathBuf,
-) -> Result<Function> {
-    lua.create_function(move |lua, regex: String| {
-        use mlua::Table;
-        use regex::Regex;
-        use std::fs;
-
-        // Function to recursively search directory
-        let search_regex = match Regex::new(&regex) {
-            Ok(re) => re,
-            Err(e) => return Err(mlua::Error::runtime(format!("Invalid regex: {}", e))),
-        };
-
-        let mut search_results: Vec<Result<Table>> = Vec::new();
-
-        // Create an explicit stack for directories to process
-        let mut dir_stack = vec![root_dir.clone()];
-
-        while let Some(current_dir) = dir_stack.pop() {
-            // Process each entry in the current directory
-            let entries = match fs::read_dir(&current_dir) {
-                Ok(entries) => entries,
-                Err(e) => return Err(e.into()),
-            };
-
-            for entry_result in entries {
-                let entry = match entry_result {
-                    Ok(e) => e,
-                    Err(e) => return Err(e.into()),
-                };
-
-                let path = entry.path();
-
-                if path.is_dir() {
-                    // Skip .git directory and other common directories to ignore
-                    let dir_name = path.file_name().unwrap_or_default().to_string_lossy();
-                    if !dir_name.starts_with('.')
-                        && dir_name != "node_modules"
-                        && dir_name != "target"
-                    {
-                        // Instead of recursive call, add to stack
-                        dir_stack.push(path);
-                    }
-                } else if path.is_file() {
-                    // Skip binary files and very large files
-                    if let Ok(metadata) = fs::metadata(&path) {
-                        if metadata.len() > 1_000_000 {
-                            // Skip files larger than 1MB
-                            continue;
-                        }
-                    }
-
-                    // Attempt to read the file as text
-                    if let Ok(content) = fs::read_to_string(&path) {
-                        let mut matches = Vec::new();
-
-                        // Find all regex matches in the content
-                        for capture in search_regex.find_iter(&content) {
-                            matches.push(capture.as_str().to_string());
-                        }
-
-                        // If we found matches, create a result entry
-                        if !matches.is_empty() {
-                            let result_entry = lua.create_table()?;
-                            result_entry.set("path", path.to_string_lossy().to_string())?;
-
-                            let matches_table = lua.create_table()?;
-                            for (i, m) in matches.iter().enumerate() {
-                                matches_table.set(i + 1, m.clone())?;
-                            }
-                            result_entry.set("matches", matches_table)?;
-
-                            search_results.push(Ok(result_entry));
-                        }
-                    }
-                }
-            }
-        }
-
-        // Create a table to hold our results
-        let results_table = lua.create_table()?;
-        for (i, result) in search_results.into_iter().enumerate() {
-            match result {
-                Ok(entry) => results_table.set(i + 1, entry)?,
-                Err(e) => return Err(e),
-            }
-        }
-
-        Ok(results_table)
-    })
-}
-
-/// Sandboxed io.open() function in Lua.
-fn io_open(
-    lua: &Lua,
-    fs_changes: Rc<RefCell<HashMap<PathBuf, Vec<u8>>>>,
-    root_dir: PathBuf,
-) -> Result<Function> {
-    lua.create_function(move |lua, (path_str, mode): (String, Option<String>)| {
-        let mode = mode.unwrap_or_else(|| "r".to_string());
-
-        // Parse the mode string to determine read/write permissions
-        let read_perm = mode.contains('r');
-        let write_perm = mode.contains('w') || mode.contains('a') || mode.contains('+');
-        let append = mode.contains('a');
-        let truncate = mode.contains('w');
-
-        // This will be the Lua value returned from the `open` function.
-        let file = lua.create_table()?;
-
-        // Store file metadata in the file
-        file.set("__path", path_str.clone())?;
-        file.set("__mode", mode.clone())?;
-        file.set("__read_perm", read_perm)?;
-        file.set("__write_perm", write_perm)?;
-
-        // Sandbox the path; it must be within root_dir
-        let path: PathBuf = {
-            let rust_path = Path::new(&path_str);
-
-            // Get absolute path
-            if rust_path.is_absolute() {
-                // Check if path starts with root_dir prefix without resolving symlinks
-                if !rust_path.starts_with(&root_dir) {
-                    return Ok((
-                        None,
-                        format!(
-                            "Error: Absolute path {} is outside the current working directory",
-                            path_str
-                        ),
-                    ));
-                }
-                rust_path.to_path_buf()
-            } else {
-                // Make relative path absolute relative to cwd
-                root_dir.join(rust_path)
-            }
-        };
-
-        // close method
-        let close_fn = {
-            let fs_changes = fs_changes.clone();
-            lua.create_function(move |_lua, file_userdata: mlua::Table| {
-                let write_perm = file_userdata.get::<bool>("__write_perm")?;
-                let path = file_userdata.get::<String>("__path")?;
-
-                if write_perm {
-                    // When closing a writable file, record the content
-                    let content = file_userdata.get::<mlua::AnyUserData>("__content")?;
-                    let content_ref = content.borrow::<FileContent>()?;
-                    let content_vec = content_ref.0.borrow();
-
-                    // Don't actually write to disk; instead, just update fs_changes.
-                    let path_buf = PathBuf::from(&path);
-                    fs_changes
-                        .borrow_mut()
-                        .insert(path_buf.clone(), content_vec.clone());
-                }
-
-                Ok(true)
-            })?
-        };
-        file.set("close", close_fn)?;
-
-        // If it's a directory, give it a custom read() and return early.
-        if path.is_dir() {
-            // TODO handle the case where we changed it in the in-memory fs
-
-            // Create a special directory handle
-            file.set("__is_directory", true)?;
-
-            // Store directory entries
-            let entries = match std::fs::read_dir(&path) {
-                Ok(entries) => {
-                    let mut entry_names = Vec::new();
-                    for entry in entries.flatten() {
-                        entry_names.push(entry.file_name().to_string_lossy().into_owned());
-                    }
-                    entry_names
-                }
-                Err(e) => return Ok((None, format!("Error reading directory: {}", e))),
-            };
-
-            // Save the list of entries
-            file.set("__dir_entries", entries)?;
-            file.set("__dir_position", 0usize)?;
-
-            // Create a directory-specific read function
-            let read_fn = lua.create_function(|_lua, file_userdata: mlua::Table| {
-                let position = file_userdata.get::<usize>("__dir_position")?;
-                let entries = file_userdata.get::<Vec<String>>("__dir_entries")?;
-
-                if position >= entries.len() {
-                    return Ok(None); // No more entries
-                }
-
-                let entry = entries[position].clone();
-                file_userdata.set("__dir_position", position + 1)?;
-
-                Ok(Some(entry))
-            })?;
-            file.set("read", read_fn)?;
-
-            // If we got this far, the directory was opened successfully
-            return Ok((Some(file), String::new()));
-        }
-
-        let is_in_changes = fs_changes.borrow().contains_key(&path);
-        let file_exists = is_in_changes || path.exists();
-        let mut file_content = Vec::new();
-
-        if file_exists && !truncate {
-            if is_in_changes {
-                file_content = fs_changes.borrow().get(&path).unwrap().clone();
-            } else {
-                // Try to read existing content if file exists and we're not truncating
-                match std::fs::read(&path) {
-                    Ok(content) => file_content = content,
-                    Err(e) => return Ok((None, format!("Error reading file: {}", e))),
-                }
-            }
-        }
-
-        // If in append mode, position should be at the end
-        let position = if append && file_exists {
-            file_content.len()
-        } else {
-            0
-        };
-        file.set("__position", position)?;
-        file.set(
-            "__content",
-            lua.create_userdata(FileContent(RefCell::new(file_content)))?,
-        )?;
-
-        // Create file methods
-
-        // read method
-        let read_fn = {
-            lua.create_function(
-                |_lua, (file_userdata, format): (mlua::Table, Option<mlua::Value>)| {
-                    let read_perm = file_userdata.get::<bool>("__read_perm")?;
-                    if !read_perm {
-                        return Err(mlua::Error::runtime("File not open for reading"));
-                    }
-
-                    let content = file_userdata.get::<mlua::AnyUserData>("__content")?;
-                    let mut position = file_userdata.get::<usize>("__position")?;
-                    let content_ref = content.borrow::<FileContent>()?;
-                    let content_vec = content_ref.0.borrow();
-
-                    if position >= content_vec.len() {
-                        return Ok(None); // EOF
-                    }
-
-                    match format {
-                        Some(mlua::Value::String(s)) => {
-                            let lossy_string = s.to_string_lossy();
-                            let format_str: &str = lossy_string.as_ref();
-
-                            // Only consider the first 2 bytes, since it's common to pass e.g. "*all"  instead of "*a"
-                            match &format_str[0..2] {
-                                "*a" => {
-                                    // Read entire file from current position
-                                    let result = String::from_utf8_lossy(&content_vec[position..])
-                                        .to_string();
-                                    position = content_vec.len();
-                                    file_userdata.set("__position", position)?;
-                                    Ok(Some(result))
-                                }
-                                "*l" => {
-                                    // Read next line
-                                    let mut line = Vec::new();
-                                    let mut found_newline = false;
-
-                                    while position < content_vec.len() {
-                                        let byte = content_vec[position];
-                                        position += 1;
-
-                                        if byte == b'\n' {
-                                            found_newline = true;
-                                            break;
-                                        }
-
-                                        // Skip \r in \r\n sequence but add it if it's alone
-                                        if byte == b'\r' {
-                                            if position < content_vec.len()
-                                                && content_vec[position] == b'\n'
-                                            {
-                                                position += 1;
-                                                found_newline = true;
-                                                break;
-                                            }
-                                        }
-
-                                        line.push(byte);
-                                    }
-
-                                    file_userdata.set("__position", position)?;
-
-                                    if !found_newline
-                                        && line.is_empty()
-                                        && position >= content_vec.len()
-                                    {
-                                        return Ok(None); // EOF
-                                    }
-
-                                    let result = String::from_utf8_lossy(&line).to_string();
-                                    Ok(Some(result))
-                                }
-                                "*n" => {
-                                    // Try to parse as a number (number of bytes to read)
-                                    match format_str.parse::<usize>() {
-                                        Ok(n) => {
-                                            let end =
-                                                std::cmp::min(position + n, content_vec.len());
-                                            let bytes = &content_vec[position..end];
-                                            let result = String::from_utf8_lossy(bytes).to_string();
-                                            position = end;
-                                            file_userdata.set("__position", position)?;
-                                            Ok(Some(result))
-                                        }
-                                        Err(_) => Err(mlua::Error::runtime(format!(
-                                            "Invalid format: {}",
-                                            format_str
-                                        ))),
-                                    }
-                                }
-                                "*L" => {
-                                    // Read next line keeping the end of line
-                                    let mut line = Vec::new();
-
-                                    while position < content_vec.len() {
-                                        let byte = content_vec[position];
-                                        position += 1;
-
-                                        line.push(byte);
-
-                                        if byte == b'\n' {
-                                            break;
-                                        }
-
-                                        // If we encounter a \r, add it and check if the next is \n
-                                        if byte == b'\r'
-                                            && position < content_vec.len()
-                                            && content_vec[position] == b'\n'
-                                        {
-                                            line.push(content_vec[position]);
-                                            position += 1;
-                                            break;
-                                        }
-                                    }
-
-                                    file_userdata.set("__position", position)?;
-
-                                    if line.is_empty() && position >= content_vec.len() {
-                                        return Ok(None); // EOF
-                                    }
-
-                                    let result = String::from_utf8_lossy(&line).to_string();
-                                    Ok(Some(result))
-                                }
-                                _ => Err(mlua::Error::runtime(format!(
-                                    "Unsupported format: {}",
-                                    format_str
-                                ))),
-                            }
-                        }
-                        Some(mlua::Value::Number(n)) => {
-                            // Read n bytes
-                            let n = n as usize;
-                            let end = std::cmp::min(position + n, content_vec.len());
-                            let bytes = &content_vec[position..end];
-                            let result = String::from_utf8_lossy(bytes).to_string();
-                            position = end;
-                            file_userdata.set("__position", position)?;
-                            Ok(Some(result))
-                        }
-                        Some(_) => Err(mlua::Error::runtime("Invalid format")),
-                        None => {
-                            // Default is to read a line
-                            let mut line = Vec::new();
-                            let mut found_newline = false;
-
-                            while position < content_vec.len() {
-                                let byte = content_vec[position];
-                                position += 1;
-
-                                if byte == b'\n' {
-                                    found_newline = true;
-                                    break;
-                                }
-
-                                // Handle \r\n
-                                if byte == b'\r' {
-                                    if position < content_vec.len()
-                                        && content_vec[position] == b'\n'
-                                    {
-                                        position += 1;
-                                        found_newline = true;
-                                        break;
-                                    }
-                                }
-
-                                line.push(byte);
-                            }
-
-                            file_userdata.set("__position", position)?;
-
-                            if !found_newline && line.is_empty() && position >= content_vec.len() {
-                                return Ok(None); // EOF
-                            }
-
-                            let result = String::from_utf8_lossy(&line).to_string();
-                            Ok(Some(result))
-                        }
-                    }
-                },
-            )?
-        };
-        file.set("read", read_fn)?;
-
-        // write method
-        let write_fn = {
-            let fs_changes = fs_changes.clone();
-
-            lua.create_function(move |_lua, (file_userdata, text): (mlua::Table, String)| {
-                let write_perm = file_userdata.get::<bool>("__write_perm")?;
-                if !write_perm {
-                    return Err(mlua::Error::runtime("File not open for writing"));
-                }
-
-                let content = file_userdata.get::<mlua::AnyUserData>("__content")?;
-                let position = file_userdata.get::<usize>("__position")?;
-                let content_ref = content.borrow::<FileContent>()?;
-                let mut content_vec = content_ref.0.borrow_mut();
-
-                let bytes = text.as_bytes();
-
-                // Ensure the vector has enough capacity
-                if position + bytes.len() > content_vec.len() {
-                    content_vec.resize(position + bytes.len(), 0);
-                }
-
-                // Write the bytes
-                for (i, &byte) in bytes.iter().enumerate() {
-                    content_vec[position + i] = byte;
-                }
-
-                // Update position
-                let new_position = position + bytes.len();
-                file_userdata.set("__position", new_position)?;
-
-                // Update fs_changes
-                let path = file_userdata.get::<String>("__path")?;
-                let path_buf = PathBuf::from(path);
-                fs_changes
-                    .borrow_mut()
-                    .insert(path_buf, content_vec.clone());
-
-                Ok(true)
-            })?
-        };
-        file.set("write", write_fn)?;
-
-        // If we got this far, the file was opened successfully
-        Ok((Some(file), String::new()))
-    })
-}
-
-/// Runs a Lua script in a sandboxed environment and returns the printed lines
-pub fn run_sandboxed_lua(
-    script: &str,
-    fs_changes: HashMap<PathBuf, Vec<u8>>,
-    root_dir: PathBuf,
-) -> Result<ScriptOutput> {
-    let lua = Lua::new();
-    lua.set_memory_limit(2 * 1024 * 1024 * 1024)?; // 2 GB
-    let globals = lua.globals();
-
-    // Track the lines the Lua script prints out.
-    let printed_lines = Rc::new(RefCell::new(Vec::new()));
-    let fs = Rc::new(RefCell::new(fs_changes));
-
-    globals.set("sb_print", print(&lua, printed_lines.clone())?)?;
-    globals.set("search", search(&lua, fs.clone(), root_dir.clone())?)?;
-    globals.set("sb_io_open", io_open(&lua, fs.clone(), root_dir)?)?;
-    globals.set("user_script", script)?;
-
-    lua.load(SANDBOX_PREAMBLE).exec()?;
-
-    drop(lua); // Necessary so the Rc'd values get decremented.
-
-    Ok(ScriptOutput {
-        printed_lines: Rc::try_unwrap(printed_lines)
-            .expect("There are still other references to printed_lines")
-            .into_inner(),
-        fs_changes: Rc::try_unwrap(fs)
-            .expect("There are still other references to fs_changes")
-            .into_inner(),
-    })
-}
-
-pub struct ScriptOutput {
-    printed_lines: Vec<String>,
-    #[allow(dead_code)]
-    fs_changes: HashMap<PathBuf, Vec<u8>>,
-}
-
-#[allow(dead_code)]
-impl ScriptOutput {
-    fn fs_diff(&self) -> HashMap<PathBuf, String> {
-        let mut diff_map = HashMap::new();
-        for (path, content) in &self.fs_changes {
-            let diff = if path.exists() {
-                // Read the current file content
-                match std::fs::read(path) {
-                    Ok(current_content) => {
-                        // Convert both to strings for diffing
-                        let new_content = String::from_utf8_lossy(content).to_string();
-                        let old_content = String::from_utf8_lossy(&current_content).to_string();
-
-                        // Generate a git-style diff
-                        let new_lines: Vec<&str> = new_content.lines().collect();
-                        let old_lines: Vec<&str> = old_content.lines().collect();
-
-                        let path_str = path.to_string_lossy();
-                        let mut diff = format!("diff --git a/{} b/{}\n", path_str, path_str);
-                        diff.push_str(&format!("--- a/{}\n", path_str));
-                        diff.push_str(&format!("+++ b/{}\n", path_str));
-
-                        // Very basic diff algorithm - this is simplified
-                        let mut i = 0;
-                        let mut j = 0;
-
-                        while i < old_lines.len() || j < new_lines.len() {
-                            if i < old_lines.len()
-                                && j < new_lines.len()
-                                && old_lines[i] == new_lines[j]
-                            {
-                                i += 1;
-                                j += 1;
-                                continue;
-                            }
-
-                            // Find next matching line
-                            let mut next_i = i;
-                            let mut next_j = j;
-                            let mut found = false;
-
-                            // Look ahead for matches
-                            for look_i in i..std::cmp::min(i + 10, old_lines.len()) {
-                                for look_j in j..std::cmp::min(j + 10, new_lines.len()) {
-                                    if old_lines[look_i] == new_lines[look_j] {
-                                        next_i = look_i;
-                                        next_j = look_j;
-                                        found = true;
-                                        break;
-                                    }
-                                }
-                                if found {
-                                    break;
-                                }
-                            }
-
-                            // Output the hunk header
-                            diff.push_str(&format!(
-                                "@@ -{},{} +{},{} @@\n",
-                                i + 1,
-                                if found {
-                                    next_i - i
-                                } else {
-                                    old_lines.len() - i
-                                },
-                                j + 1,
-                                if found {
-                                    next_j - j
-                                } else {
-                                    new_lines.len() - j
-                                }
-                            ));
-
-                            // Output removed lines
-                            for k in i..next_i {
-                                diff.push_str(&format!("-{}\n", old_lines[k]));
-                            }
-
-                            // Output added lines
-                            for k in j..next_j {
-                                diff.push_str(&format!("+{}\n", new_lines[k]));
-                            }
-
-                            i = next_i;
-                            j = next_j;
-
-                            if found {
-                                i += 1;
-                                j += 1;
-                            } else {
-                                break;
-                            }
-                        }
-
-                        diff
-                    }
-                    Err(_) => format!("Error reading current file: {}", path.display()),
-                }
-            } else {
-                // New file
-                let content_str = String::from_utf8_lossy(content).to_string();
-                let path_str = path.to_string_lossy();
-                let mut diff = format!("diff --git a/{} b/{}\n", path_str, path_str);
-                diff.push_str("new file mode 100644\n");
-                diff.push_str("--- /dev/null\n");
-                diff.push_str(&format!("+++ b/{}\n", path_str));
-
-                let lines: Vec<&str> = content_str.lines().collect();
-                diff.push_str(&format!("@@ -0,0 +1,{} @@\n", lines.len()));
-
-                for line in lines {
-                    diff.push_str(&format!("+{}\n", line));
-                }
-
-                diff
-            };
-
-            diff_map.insert(path.clone(), diff);
-        }
-
-        diff_map
-    }
-
-    fn diff_to_string(&self) -> String {
-        let mut answer = String::new();
-        let diff_map = self.fs_diff();
-
-        if diff_map.is_empty() {
-            return "No changes to files".to_string();
-        }
-
-        // Sort the paths for consistent output
-        let mut paths: Vec<&PathBuf> = diff_map.keys().collect();
-        paths.sort();
-
-        for path in paths {
-            if !answer.is_empty() {
-                answer.push_str("\n");
-            }
-            answer.push_str(&diff_map[path]);
-        }
-
-        answer
-    }
-}

crates/scripting_tool/src/scripting_tool_description.txt

@@ -0,0 +1,22 @@
+You can write a Lua script and I'll run it on my codebase and tell you what its
+output was, including both stdout as well as the git diff of changes it made to
+the filesystem. That way, you can get more information about the code base, or
+make changes to the code base directly.
+
+The Lua script will have access to `io` and it will run with the current working
+directory being in the root of the code base, so you can use it to explore,
+search, make changes, etc. You can also have the script print things, and I'll
+tell you what the output was. Note that `io` only has `open`, and then the file
+it returns only has the methods read, write, and close - it doesn't have popen
+or anything else.
+
+Also, I'm going to be putting this Lua script into JSON, so please don't use
+Lua's double quote syntax for string literals - use one of Lua's other syntaxes
+for string literals, so I don't have to escape the double quotes.
+
+There will be a global called `search` which accepts a regex (it's implemented
+using Rust's regex crate, so use that regex syntax) and runs that regex on the
+contents of every file in the code base (aside from gitignored files), then
+returns an array of tables with two fields: "path" (the path to the file that
+had the matches) and "matches" (an array of strings, with each string being a
+match that was found within the file).

crates/scripting_tool/src/session.rs

@@ -0,0 +1,743 @@
+use anyhow::Result;
+use collections::{HashMap, HashSet};
+use futures::{
+    channel::{mpsc, oneshot},
+    pin_mut, SinkExt, StreamExt,
+};
+use gpui::{AppContext, AsyncApp, Context, Entity, Task, WeakEntity};
+use mlua::{Lua, MultiValue, Table, UserData, UserDataMethods};
+use parking_lot::Mutex;
+use project::{search::SearchQuery, Fs, Project};
+use regex::Regex;
+use std::{
+    cell::RefCell,
+    path::{Path, PathBuf},
+    sync::Arc,
+};
+use util::{paths::PathMatcher, ResultExt};
+
+pub struct ScriptOutput {
+    pub stdout: String,
+}
+
+struct ForegroundFn(Box<dyn FnOnce(WeakEntity<Session>, AsyncApp) + Send>);
+
+pub struct Session {
+    project: Entity<Project>,
+    // TODO Remove this
+    fs_changes: Arc<Mutex<HashMap<PathBuf, Vec<u8>>>>,
+    foreground_fns_tx: mpsc::Sender<ForegroundFn>,
+    _invoke_foreground_fns: Task<()>,
+}
+
+impl Session {
+    pub fn new(project: Entity<Project>, cx: &mut Context<Self>) -> Self {
+        let (foreground_fns_tx, mut foreground_fns_rx) = mpsc::channel(128);
+        Session {
+            project,
+            fs_changes: Arc::new(Mutex::new(HashMap::default())),
+            foreground_fns_tx,
+            _invoke_foreground_fns: cx.spawn(|this, cx| async move {
+                while let Some(foreground_fn) = foreground_fns_rx.next().await {
+                    foreground_fn.0(this.clone(), cx.clone());
+                }
+            }),
+        }
+    }
+
+    /// Runs a Lua script in a sandboxed environment and returns the printed lines
+    pub fn run_script(
+        &mut self,
+        script: String,
+        cx: &mut Context<Self>,
+    ) -> Task<Result<ScriptOutput>> {
+        const SANDBOX_PREAMBLE: &str = include_str!("sandbox_preamble.lua");
+
+        // TODO Remove fs_changes
+        let fs_changes = self.fs_changes.clone();
+        // TODO Honor all worktrees instead of the first one
+        let root_dir = self
+            .project
+            .read(cx)
+            .visible_worktrees(cx)
+            .next()
+            .map(|worktree| worktree.read(cx).abs_path());
+        let fs = self.project.read(cx).fs().clone();
+        let foreground_fns_tx = self.foreground_fns_tx.clone();
+        cx.background_spawn(async move {
+            let lua = Lua::new();
+            lua.set_memory_limit(2 * 1024 * 1024 * 1024)?; // 2 GB
+            let globals = lua.globals();
+            let stdout = Arc::new(Mutex::new(String::new()));
+            globals.set(
+                "sb_print",
+                lua.create_function({
+                    let stdout = stdout.clone();
+                    move |_, args: MultiValue| Self::print(args, &stdout)
+                })?,
+            )?;
+            globals.set(
+                "search",
+                lua.create_async_function({
+                    let foreground_fns_tx = foreground_fns_tx.clone();
+                    let fs = fs.clone();
+                    move |lua, regex| {
+                        Self::search(lua, foreground_fns_tx.clone(), fs.clone(), regex)
+                    }
+                })?,
+            )?;
+            globals.set(
+                "sb_io_open",
+                lua.create_function({
+                    let fs_changes = fs_changes.clone();
+                    let root_dir = root_dir.clone();
+                    move |lua, (path_str, mode)| {
+                        Self::io_open(&lua, &fs_changes, root_dir.as_ref(), path_str, mode)
+                    }
+                })?,
+            )?;
+            globals.set("user_script", script)?;
+
+            lua.load(SANDBOX_PREAMBLE).exec_async().await?;
+
+            // Drop Lua instance to decrement reference count.
+            drop(lua);
+
+            let stdout = Arc::try_unwrap(stdout)
+                .expect("no more references to stdout")
+                .into_inner();
+            Ok(ScriptOutput { stdout })
+        })
+    }
+
+    /// Sandboxed print() function in Lua.
+    fn print(args: MultiValue, stdout: &Mutex<String>) -> mlua::Result<()> {
+        for (index, arg) in args.into_iter().enumerate() {
+            // Lua's `print()` prints tab characters between each argument.
+            if index > 0 {
+                stdout.lock().push('\t');
+            }
+
+            // If the argument's to_string() fails, have the whole function call fail.
+            stdout.lock().push_str(&arg.to_string()?);
+        }
+        stdout.lock().push('\n');
+
+        Ok(())
+    }
+
+    /// Sandboxed io.open() function in Lua.
+    fn io_open(
+        lua: &Lua,
+        fs_changes: &Arc<Mutex<HashMap<PathBuf, Vec<u8>>>>,
+        root_dir: Option<&Arc<Path>>,
+        path_str: String,
+        mode: Option<String>,
+    ) -> mlua::Result<(Option<Table>, String)> {
+        let root_dir = root_dir
+            .ok_or_else(|| mlua::Error::runtime("cannot open file without a root directory"))?;
+
+        let mode = mode.unwrap_or_else(|| "r".to_string());
+
+        // Parse the mode string to determine read/write permissions
+        let read_perm = mode.contains('r');
+        let write_perm = mode.contains('w') || mode.contains('a') || mode.contains('+');
+        let append = mode.contains('a');
+        let truncate = mode.contains('w');
+
+        // This will be the Lua value returned from the `open` function.
+        let file = lua.create_table()?;
+
+        // Store file metadata in the file
+        file.set("__path", path_str.clone())?;
+        file.set("__mode", mode.clone())?;
+        file.set("__read_perm", read_perm)?;
+        file.set("__write_perm", write_perm)?;
+
+        // Sandbox the path; it must be within root_dir
+        let path: PathBuf = {
+            let rust_path = Path::new(&path_str);
+
+            // Get absolute path
+            if rust_path.is_absolute() {
+                // Check if path starts with root_dir prefix without resolving symlinks
+                if !rust_path.starts_with(&root_dir) {
+                    return Ok((
+                        None,
+                        format!(
+                            "Error: Absolute path {} is outside the current working directory",
+                            path_str
+                        ),
+                    ));
+                }
+                rust_path.to_path_buf()
+            } else {
+                // Make relative path absolute relative to cwd
+                root_dir.join(rust_path)
+            }
+        };
+
+        // close method
+        let close_fn = {
+            let fs_changes = fs_changes.clone();
+            lua.create_function(move |_lua, file_userdata: mlua::Table| {
+                let write_perm = file_userdata.get::<bool>("__write_perm")?;
+                let path = file_userdata.get::<String>("__path")?;
+
+                if write_perm {
+                    // When closing a writable file, record the content
+                    let content = file_userdata.get::<mlua::AnyUserData>("__content")?;
+                    let content_ref = content.borrow::<FileContent>()?;
+                    let content_vec = content_ref.0.borrow();
+
+                    // Don't actually write to disk; instead, just update fs_changes.
+                    let path_buf = PathBuf::from(&path);
+                    fs_changes
+                        .lock()
+                        .insert(path_buf.clone(), content_vec.clone());
+                }
+
+                Ok(true)
+            })?
+        };
+        file.set("close", close_fn)?;
+
+        // If it's a directory, give it a custom read() and return early.
+        if path.is_dir() {
+            // TODO handle the case where we changed it in the in-memory fs
+
+            // Create a special directory handle
+            file.set("__is_directory", true)?;
+
+            // Store directory entries
+            let entries = match std::fs::read_dir(&path) {
+                Ok(entries) => {
+                    let mut entry_names = Vec::new();
+                    for entry in entries.flatten() {
+                        entry_names.push(entry.file_name().to_string_lossy().into_owned());
+                    }
+                    entry_names
+                }
+                Err(e) => return Ok((None, format!("Error reading directory: {}", e))),
+            };
+
+            // Save the list of entries
+            file.set("__dir_entries", entries)?;
+            file.set("__dir_position", 0usize)?;
+
+            // Create a directory-specific read function
+            let read_fn = lua.create_function(|_lua, file_userdata: mlua::Table| {
+                let position = file_userdata.get::<usize>("__dir_position")?;
+                let entries = file_userdata.get::<Vec<String>>("__dir_entries")?;
+
+                if position >= entries.len() {
+                    return Ok(None); // No more entries
+                }
+
+                let entry = entries[position].clone();
+                file_userdata.set("__dir_position", position + 1)?;
+
+                Ok(Some(entry))
+            })?;
+            file.set("read", read_fn)?;
+
+            // If we got this far, the directory was opened successfully
+            return Ok((Some(file), String::new()));
+        }
+
+        let fs_changes_map = fs_changes.lock();
+
+        let is_in_changes = fs_changes_map.contains_key(&path);
+        let file_exists = is_in_changes || path.exists();
+        let mut file_content = Vec::new();
+
+        if file_exists && !truncate {
+            if is_in_changes {
+                file_content = fs_changes_map.get(&path).unwrap().clone();
+            } else {
+                // Try to read existing content if file exists and we're not truncating
+                match std::fs::read(&path) {
+                    Ok(content) => file_content = content,
+                    Err(e) => return Ok((None, format!("Error reading file: {}", e))),
+                }
+            }
+        }
+
+        drop(fs_changes_map); // Unlock the fs_changes mutex.
+
+        // If in append mode, position should be at the end
+        let position = if append && file_exists {
+            file_content.len()
+        } else {
+            0
+        };
+        file.set("__position", position)?;
+        file.set(
+            "__content",
+            lua.create_userdata(FileContent(RefCell::new(file_content)))?,
+        )?;
+
+        // Create file methods
+
+        // read method
+        let read_fn = {
+            lua.create_function(
+                |_lua, (file_userdata, format): (mlua::Table, Option<mlua::Value>)| {
+                    let read_perm = file_userdata.get::<bool>("__read_perm")?;
+                    if !read_perm {
+                        return Err(mlua::Error::runtime("File not open for reading"));
+                    }
+
+                    let content = file_userdata.get::<mlua::AnyUserData>("__content")?;
+                    let mut position = file_userdata.get::<usize>("__position")?;
+                    let content_ref = content.borrow::<FileContent>()?;
+                    let content_vec = content_ref.0.borrow();
+
+                    if position >= content_vec.len() {
+                        return Ok(None); // EOF
+                    }
+
+                    match format {
+                        Some(mlua::Value::String(s)) => {
+                            let lossy_string = s.to_string_lossy();
+                            let format_str: &str = lossy_string.as_ref();
+
+                            // Only consider the first 2 bytes, since it's common to pass e.g. "*all"  instead of "*a"
+                            match &format_str[0..2] {
+                                "*a" => {
+                                    // Read entire file from current position
+                                    let result = String::from_utf8_lossy(&content_vec[position..])
+                                        .to_string();
+                                    position = content_vec.len();
+                                    file_userdata.set("__position", position)?;
+                                    Ok(Some(result))
+                                }
+                                "*l" => {
+                                    // Read next line
+                                    let mut line = Vec::new();
+                                    let mut found_newline = false;
+
+                                    while position < content_vec.len() {
+                                        let byte = content_vec[position];
+                                        position += 1;
+
+                                        if byte == b'\n' {
+                                            found_newline = true;
+                                            break;
+                                        }
+
+                                        // Skip \r in \r\n sequence but add it if it's alone
+                                        if byte == b'\r' {
+                                            if position < content_vec.len()
+                                                && content_vec[position] == b'\n'
+                                            {
+                                                position += 1;
+                                                found_newline = true;
+                                                break;
+                                            }
+                                        }
+
+                                        line.push(byte);
+                                    }
+
+                                    file_userdata.set("__position", position)?;
+
+                                    if !found_newline
+                                        && line.is_empty()
+                                        && position >= content_vec.len()
+                                    {
+                                        return Ok(None); // EOF
+                                    }
+
+                                    let result = String::from_utf8_lossy(&line).to_string();
+                                    Ok(Some(result))
+                                }
+                                "*n" => {
+                                    // Try to parse as a number (number of bytes to read)
+                                    match format_str.parse::<usize>() {
+                                        Ok(n) => {
+                                            let end =
+                                                std::cmp::min(position + n, content_vec.len());
+                                            let bytes = &content_vec[position..end];
+                                            let result = String::from_utf8_lossy(bytes).to_string();
+                                            position = end;
+                                            file_userdata.set("__position", position)?;
+                                            Ok(Some(result))
+                                        }
+                                        Err(_) => Err(mlua::Error::runtime(format!(
+                                            "Invalid format: {}",
+                                            format_str
+                                        ))),
+                                    }
+                                }
+                                "*L" => {
+                                    // Read next line keeping the end of line
+                                    let mut line = Vec::new();
+
+                                    while position < content_vec.len() {
+                                        let byte = content_vec[position];
+                                        position += 1;
+
+                                        line.push(byte);
+
+                                        if byte == b'\n' {
+                                            break;
+                                        }
+
+                                        // If we encounter a \r, add it and check if the next is \n
+                                        if byte == b'\r'
+                                            && position < content_vec.len()
+                                            && content_vec[position] == b'\n'
+                                        {
+                                            line.push(content_vec[position]);
+                                            position += 1;
+                                            break;
+                                        }
+                                    }
+
+                                    file_userdata.set("__position", position)?;
+
+                                    if line.is_empty() && position >= content_vec.len() {
+                                        return Ok(None); // EOF
+                                    }
+
+                                    let result = String::from_utf8_lossy(&line).to_string();
+                                    Ok(Some(result))
+                                }
+                                _ => Err(mlua::Error::runtime(format!(
+                                    "Unsupported format: {}",
+                                    format_str
+                                ))),
+                            }
+                        }
+                        Some(mlua::Value::Number(n)) => {
+                            // Read n bytes
+                            let n = n as usize;
+                            let end = std::cmp::min(position + n, content_vec.len());
+                            let bytes = &content_vec[position..end];
+                            let result = String::from_utf8_lossy(bytes).to_string();
+                            position = end;
+                            file_userdata.set("__position", position)?;
+                            Ok(Some(result))
+                        }
+                        Some(_) => Err(mlua::Error::runtime("Invalid format")),
+                        None => {
+                            // Default is to read a line
+                            let mut line = Vec::new();
+                            let mut found_newline = false;
+
+                            while position < content_vec.len() {
+                                let byte = content_vec[position];
+                                position += 1;
+
+                                if byte == b'\n' {
+                                    found_newline = true;
+                                    break;
+                                }
+
+                                // Handle \r\n
+                                if byte == b'\r' {
+                                    if position < content_vec.len()
+                                        && content_vec[position] == b'\n'
+                                    {
+                                        position += 1;
+                                        found_newline = true;
+                                        break;
+                                    }
+                                }
+
+                                line.push(byte);
+                            }
+
+                            file_userdata.set("__position", position)?;
+
+                            if !found_newline && line.is_empty() && position >= content_vec.len() {
+                                return Ok(None); // EOF
+                            }
+
+                            let result = String::from_utf8_lossy(&line).to_string();
+                            Ok(Some(result))
+                        }
+                    }
+                },
+            )?
+        };
+        file.set("read", read_fn)?;
+
+        // write method
+        let write_fn = {
+            let fs_changes = fs_changes.clone();
+
+            lua.create_function(move |_lua, (file_userdata, text): (mlua::Table, String)| {
+                let write_perm = file_userdata.get::<bool>("__write_perm")?;
+                if !write_perm {
+                    return Err(mlua::Error::runtime("File not open for writing"));
+                }
+
+                let content = file_userdata.get::<mlua::AnyUserData>("__content")?;
+                let position = file_userdata.get::<usize>("__position")?;
+                let content_ref = content.borrow::<FileContent>()?;
+                let mut content_vec = content_ref.0.borrow_mut();
+
+                let bytes = text.as_bytes();
+
+                // Ensure the vector has enough capacity
+                if position + bytes.len() > content_vec.len() {
+                    content_vec.resize(position + bytes.len(), 0);
+                }
+
+                // Write the bytes
+                for (i, &byte) in bytes.iter().enumerate() {
+                    content_vec[position + i] = byte;
+                }
+
+                // Update position
+                let new_position = position + bytes.len();
+                file_userdata.set("__position", new_position)?;
+
+                // Update fs_changes
+                let path = file_userdata.get::<String>("__path")?;
+                let path_buf = PathBuf::from(path);
+                fs_changes.lock().insert(path_buf, content_vec.clone());
+
+                Ok(true)
+            })?
+        };
+        file.set("write", write_fn)?;
+
+        // If we got this far, the file was opened successfully
+        Ok((Some(file), String::new()))
+    }
+
+    async fn search(
+        lua: Lua,
+        mut foreground_tx: mpsc::Sender<ForegroundFn>,
+        fs: Arc<dyn Fs>,
+        regex: String,
+    ) -> mlua::Result<Table> {
+        // TODO: Allow specification of these options.
+        let search_query = SearchQuery::regex(
+            &regex,
+            false,
+            false,
+            false,
+            PathMatcher::default(),
+            PathMatcher::default(),
+            None,
+        );
+        let search_query = match search_query {
+            Ok(query) => query,
+            Err(e) => return Err(mlua::Error::runtime(format!("Invalid search query: {}", e))),
+        };
+
+        // TODO: Should use `search_query.regex`. The tool description should also be updated,
+        // as it specifies standard regex.
+        let search_regex = match Regex::new(&regex) {
+            Ok(re) => re,
+            Err(e) => return Err(mlua::Error::runtime(format!("Invalid regex: {}", e))),
+        };
+
+        let mut abs_paths_rx =
+            Self::find_search_candidates(search_query, &mut foreground_tx).await?;
+
+        let mut search_results: Vec<Table> = Vec::new();
+        while let Some(path) = abs_paths_rx.next().await {
+            // Skip files larger than 1MB
+            if let Ok(Some(metadata)) = fs.metadata(&path).await {
+                if metadata.len > 1_000_000 {
+                    continue;
+                }
+            }
+
+            // Attempt to read the file as text
+            if let Ok(content) = fs.load(&path).await {
+                let mut matches = Vec::new();
+
+                // Find all regex matches in the content
+                for capture in search_regex.find_iter(&content) {
+                    matches.push(capture.as_str().to_string());
+                }
+
+                // If we found matches, create a result entry
+                if !matches.is_empty() {
+                    let result_entry = lua.create_table()?;
+                    result_entry.set("path", path.to_string_lossy().to_string())?;
+
+                    let matches_table = lua.create_table()?;
+                    for (ix, m) in matches.iter().enumerate() {
+                        matches_table.set(ix + 1, m.clone())?;
+                    }
+                    result_entry.set("matches", matches_table)?;
+
+                    search_results.push(result_entry);
+                }
+            }
+        }
+
+        // Create a table to hold our results
+        let results_table = lua.create_table()?;
+        for (ix, entry) in search_results.into_iter().enumerate() {
+            results_table.set(ix + 1, entry)?;
+        }
+
+        Ok(results_table)
+    }
+
+    async fn find_search_candidates(
+        search_query: SearchQuery,
+        foreground_tx: &mut mpsc::Sender<ForegroundFn>,
+    ) -> mlua::Result<mpsc::UnboundedReceiver<PathBuf>> {
+        Self::run_foreground_fn(
+            "finding search file candidates",
+            foreground_tx,
+            Box::new(move |session, mut cx| {
+                session.update(&mut cx, |session, cx| {
+                    session.project.update(cx, |project, cx| {
+                        project.worktree_store().update(cx, |worktree_store, cx| {
+                            // TODO: Better limit? For now this is the same as
+                            // MAX_SEARCH_RESULT_FILES.
+                            let limit = 5000;
+                            // TODO: Providing non-empty open_entries can make this a bit more
+                            // efficient as it can skip checking that these paths are textual.
+                            let open_entries = HashSet::default();
+                            let candidates = worktree_store.find_search_candidates(
+                                search_query,
+                                limit,
+                                open_entries,
+                                project.fs().clone(),
+                                cx,
+                            );
+                            let (abs_paths_tx, abs_paths_rx) = mpsc::unbounded();
+                            cx.spawn(|worktree_store, cx| async move {
+                                pin_mut!(candidates);
+
+                                while let Some(project_path) = candidates.next().await {
+                                    worktree_store.read_with(&cx, |worktree_store, cx| {
+                                        if let Some(worktree) = worktree_store
+                                            .worktree_for_id(project_path.worktree_id, cx)
+                                        {
+                                            if let Some(abs_path) = worktree
+                                                .read(cx)
+                                                .absolutize(&project_path.path)
+                                                .log_err()
+                                            {
+                                                abs_paths_tx.unbounded_send(abs_path)?;
+                                            }
+                                        }
+                                        anyhow::Ok(())
+                                    })??;
+                                }
+                                anyhow::Ok(())
+                            })
+                            .detach();
+                            abs_paths_rx
+                        })
+                    })
+                })
+            }),
+        )
+        .await
+    }
+
+    async fn run_foreground_fn<R: Send + 'static>(
+        description: &str,
+        foreground_tx: &mut mpsc::Sender<ForegroundFn>,
+        function: Box<dyn FnOnce(WeakEntity<Self>, AsyncApp) -> anyhow::Result<R> + Send>,
+    ) -> mlua::Result<R> {
+        let (response_tx, response_rx) = oneshot::channel();
+        let send_result = foreground_tx
+            .send(ForegroundFn(Box::new(move |this, cx| {
+                response_tx.send(function(this, cx)).ok();
+            })))
+            .await;
+        match send_result {
+            Ok(()) => (),
+            Err(err) => {
+                return Err(mlua::Error::runtime(format!(
+                    "Internal error while enqueuing work for {description}: {err}"
+                )))
+            }
+        }
+        match response_rx.await {
+            Ok(Ok(result)) => Ok(result),
+            Ok(Err(err)) => Err(mlua::Error::runtime(format!(
+                "Error while {description}: {err}"
+            ))),
+            Err(oneshot::Canceled) => Err(mlua::Error::runtime(format!(
+                "Internal error: response oneshot was canceled while {description}."
+            ))),
+        }
+    }
+}
+
+struct FileContent(RefCell<Vec<u8>>);
+
+impl UserData for FileContent {
+    fn add_methods<M: UserDataMethods<Self>>(_methods: &mut M) {
+        // FileContent doesn't have any methods so far.
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use gpui::TestAppContext;
+    use project::FakeFs;
+    use serde_json::json;
+    use settings::SettingsStore;
+
+    use super::*;
+
+    #[gpui::test]
+    async fn test_print(cx: &mut TestAppContext) {
+        init_test(cx);
+        let fs = FakeFs::new(cx.executor());
+        let project = Project::test(fs, [], cx).await;
+        let session = cx.new(|cx| Session::new(project, cx));
+        let script = r#"
+            print("Hello", "world!")
+            print("Goodbye", "moon!")
+        "#;
+        let output = session
+            .update(cx, |session, cx| session.run_script(script.to_string(), cx))
+            .await
+            .unwrap();
+        assert_eq!(output.stdout, "Hello\tworld!\nGoodbye\tmoon!\n");
+    }
+
+    #[gpui::test]
+    async fn test_search(cx: &mut TestAppContext) {
+        init_test(cx);
+        let fs = FakeFs::new(cx.executor());
+        fs.insert_tree(
+            "/",
+            json!({
+                "file1.txt": "Hello world!",
+                "file2.txt": "Goodbye moon!"
+            }),
+        )
+        .await;
+        let project = Project::test(fs, [Path::new("/")], cx).await;
+        let session = cx.new(|cx| Session::new(project, cx));
+        let script = r#"
+            local results = search("world")
+            for i, result in ipairs(results) do
+                print("File: " .. result.path)
+                print("Matches:")
+                for j, match in ipairs(result.matches) do
+                    print("  " .. match)
+                end
+            end
+        "#;
+        let output = session
+            .update(cx, |session, cx| session.run_script(script.to_string(), cx))
+            .await
+            .unwrap();
+        assert_eq!(output.stdout, "File: /file1.txt\nMatches:\n  world\n");
+    }
+
+    fn init_test(cx: &mut TestAppContext) {
+        let settings_store = cx.update(SettingsStore::test);
+        cx.set_global(settings_store);
+        cx.update(Project::init_settings);
+    }
+}

crates/zed/src/main.rs

@@ -326,6 +326,7 @@ fn main() {
             .or_else(read_proxy_from_env);
         let http = {
             let _guard = Tokio::handle(cx).enter();
+
             ReqwestClient::proxy_and_user_agent(proxy_url, &user_agent)
                 .expect("could not start HTTP client")
         };

script/bundle-mac

@@ -70,7 +70,6 @@ export ZED_RELEASE_CHANNEL="${channel}"
 popd
 
 export ZED_BUNDLE=true
-export MACOSX_DEPLOYMENT_TARGET=10.15.7
 
 cargo_bundle_version=$(cargo -q bundle --help 2>&1 | head -n 1 || echo "")
 if [ "$cargo_bundle_version" != "cargo-bundle v0.6.0-zed" ]; then