Add an experimental, WIP diagnostics grouping panel (#14515)

Provide a current, broken state as an experimental way to browse
diagnostics.
The diagnostics are grouped by lines and reduced into a block that, in
case of multiple diagnostics per line, could be toggled back and forth
to show more diagnostics on the line.
Use `grouped_diagnostics::Deploy` to show the panel.

Issues remaining:
* panic on warnings toggle due to incorrect excerpt manipulation
* badly styled blocks
* no key bindings to navigate between blocks and toggle them
* overall odd usability gains for certain groups of people

Due to all above, the thing is feature-gated and not exposed to regular
people.


Release Notes:

- N/A

Cargo.lock

@@ -3402,11 +3402,13 @@ dependencies = [
  "ctor",
  "editor",
  "env_logger",
+ "feature_flags",
  "futures 0.3.28",
  "gpui",
  "language",
  "log",
  "lsp",
+ "multi_buffer",
  "pretty_assertions",
  "project",
  "rand 0.8.5",

crates/assistant/src/assistant_panel.rs

@@ -2549,7 +2549,10 @@ fn render_slash_command_output_toggle(
     fold: ToggleFold,
     _cx: &mut WindowContext,
 ) -> AnyElement {
-    Disclosure::new(("slash-command-output-fold-indicator", row.0), !is_folded)
+    Disclosure::new(
+        ("slash-command-output-fold-indicator", row.0 as u64),
+        !is_folded,
+    )
     .selected(is_folded)
     .on_click(move |_e, cx| fold(!is_folded, cx))
     .into_any_element()

crates/diagnostics/Cargo.toml

@@ -18,11 +18,13 @@ collections.workspace = true
 ctor.workspace = true
 editor.workspace = true
 env_logger.workspace = true
+feature_flags.workspace = true
 futures.workspace = true
 gpui.workspace = true
 language.workspace = true
 log.workspace = true
 lsp.workspace = true
+multi_buffer.workspace = true
 project.workspace = true
 rand.workspace = true
 schemars.workspace = true

crates/diagnostics/src/diagnostics.rs

@@ -4,6 +4,7 @@ mod toolbar_controls;
 
 #[cfg(test)]
 mod diagnostics_tests;
+mod grouped_diagnostics;
 
 use anyhow::Result;
 use collections::{BTreeSet, HashSet};
@@ -14,6 +15,7 @@ use editor::{
     scroll::Autoscroll,
     Editor, EditorEvent, ExcerptId, ExcerptRange, MultiBuffer, ToOffset,
 };
+use feature_flags::FeatureFlagAppExt;
 use futures::{
     channel::mpsc::{self, UnboundedSender},
     StreamExt as _,
@@ -52,6 +54,9 @@ pub fn init(cx: &mut AppContext) {
     ProjectDiagnosticsSettings::register(cx);
     cx.observe_new_views(ProjectDiagnosticsEditor::register)
         .detach();
+    if !cx.has_flag::<feature_flags::GroupedDiagnostics>() {
+        grouped_diagnostics::init(cx);
+    }
 }
 
 struct ProjectDiagnosticsEditor {
@@ -466,7 +471,9 @@ impl ProjectDiagnosticsEditor {
                                         position: (excerpt_id, entry.range.start),
                                         height: diagnostic.message.matches('\n').count() as u8 + 1,
                                         style: BlockStyle::Fixed,
-                                        render: diagnostic_block_renderer(diagnostic, true),
+                                        render: diagnostic_block_renderer(
+                                            diagnostic, None, true, true,
+                                        ),
                                         disposition: BlockDisposition::Below,
                                     });
                                 }
@@ -798,7 +805,7 @@ impl Item for ProjectDiagnosticsEditor {
 const DIAGNOSTIC_HEADER: &'static str = "diagnostic header";
 
 fn diagnostic_header_renderer(diagnostic: Diagnostic) -> RenderBlock {
-    let (message, code_ranges) = highlight_diagnostic_message(&diagnostic);
+    let (message, code_ranges) = highlight_diagnostic_message(&diagnostic, None);
     let message: SharedString = message;
     Box::new(move |cx| {
         let highlight_style: HighlightStyle = cx.theme().colors().text_accent.into();

crates/diagnostics/src/diagnostics_tests.rs

@@ -973,8 +973,8 @@ fn editor_blocks(
             blocks.extend(
                 snapshot
                     .blocks_in_range(DisplayRow(0)..snapshot.max_point().row())
-                    .enumerate()
-                    .filter_map(|(ix, (row, block))| {
+                    .filter_map(|(row, block)| {
+                        let transform_block_id = block.id();
                         let name: SharedString = match block {
                             TransformBlock::Custom(block) => {
                                 let mut element = block.render(&mut BlockContext {
@@ -984,7 +984,7 @@ fn editor_blocks(
                                     line_height: px(0.),
                                     em_width: px(0.),
                                     max_width: px(0.),
-                                    block_id: ix,
+                                    transform_block_id,
                                     editor_style: &editor::EditorStyle::default(),
                                 });
                                 let element = element.downcast_mut::<Stateful<Div>>().unwrap();

crates/editor/src/display_map.rs

@@ -30,6 +30,7 @@ use crate::{
 pub use block_map::{
     BlockBufferRows, BlockChunks as DisplayChunks, BlockContext, BlockDisposition, BlockId,
     BlockMap, BlockPoint, BlockProperties, BlockStyle, RenderBlock, TransformBlock,
+    TransformBlockId,
 };
 use block_map::{BlockRow, BlockSnapshot};
 use collections::{HashMap, HashSet};

crates/editor/src/display_map/block_map.rs

@@ -4,7 +4,7 @@ use super::{
 };
 use crate::{EditorStyle, GutterDimensions};
 use collections::{Bound, HashMap, HashSet};
-use gpui::{AnyElement, Pixels, WindowContext};
+use gpui::{AnyElement, EntityId, Pixels, WindowContext};
 use language::{BufferSnapshot, Chunk, Patch, Point};
 use multi_buffer::{Anchor, ExcerptId, ExcerptRange, MultiBufferRow, ToPoint as _};
 use parking_lot::Mutex;
@@ -20,6 +20,7 @@ use std::{
 };
 use sum_tree::{Bias, SumTree};
 use text::Edit;
+use ui::ElementId;
 
 const NEWLINES: &[u8] = &[b'\n'; u8::MAX as usize];
 
@@ -53,6 +54,12 @@ pub struct BlockSnapshot {
 #[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct BlockId(usize);
 
+impl Into<ElementId> for BlockId {
+    fn into(self) -> ElementId {
+        ElementId::Integer(self.0)
+    }
+}
+
 #[derive(Copy, Clone, Debug, Default, Eq, Ord, PartialOrd, PartialEq)]
 pub struct BlockPoint(pub Point);
 
@@ -62,7 +69,7 @@ pub struct BlockRow(pub(super) u32);
 #[derive(Copy, Clone, Debug, Default, Eq, Ord, PartialOrd, PartialEq)]
 struct WrapRow(u32);
 
-pub type RenderBlock = Box<dyn Send + Fn(&mut BlockContext) -> AnyElement>;
+pub type RenderBlock = Box<dyn Send + FnMut(&mut BlockContext) -> AnyElement>;
 
 pub struct Block {
     id: BlockId,
@@ -77,11 +84,22 @@ pub struct BlockProperties<P> {
     pub position: P,
     pub height: u8,
     pub style: BlockStyle,
-    pub render: Box<dyn Send + Fn(&mut BlockContext) -> AnyElement>,
+    pub render: RenderBlock,
     pub disposition: BlockDisposition,
 }
 
-#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd)]
+impl<P: Debug> Debug for BlockProperties<P> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("BlockProperties")
+            .field("position", &self.position)
+            .field("height", &self.height)
+            .field("style", &self.style)
+            .field("disposition", &self.disposition)
+            .finish()
+    }
+}
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd)]
 pub enum BlockStyle {
     Fixed,
     Flex,
@@ -95,10 +113,47 @@ pub struct BlockContext<'a, 'b> {
     pub gutter_dimensions: &'b GutterDimensions,
     pub em_width: Pixels,
     pub line_height: Pixels,
-    pub block_id: usize,
+    pub transform_block_id: TransformBlockId,
     pub editor_style: &'b EditorStyle,
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum TransformBlockId {
+    Block(BlockId),
+    ExcerptHeader(ExcerptId),
+    ExcerptFooter(ExcerptId),
+}
+
+impl From<TransformBlockId> for EntityId {
+    fn from(value: TransformBlockId) -> Self {
+        match value {
+            TransformBlockId::Block(BlockId(id)) => EntityId::from(id as u64),
+            TransformBlockId::ExcerptHeader(id) => id.into(),
+            TransformBlockId::ExcerptFooter(id) => id.into(),
+        }
+    }
+}
+
+impl Into<ElementId> for TransformBlockId {
+    fn into(self) -> ElementId {
+        match self {
+            Self::Block(BlockId(id)) => ("Block", id).into(),
+            Self::ExcerptHeader(id) => ("ExcerptHeader", EntityId::from(id)).into(),
+            Self::ExcerptFooter(id) => ("ExcerptFooter", EntityId::from(id)).into(),
+        }
+    }
+}
+
+impl std::fmt::Display for TransformBlockId {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Block(id) => write!(f, "Block({id:?})"),
+            Self::ExcerptHeader(id) => write!(f, "ExcerptHeader({id:?})"),
+            Self::ExcerptFooter(id) => write!(f, "ExcerptFooter({id:?})"),
+        }
+    }
+}
+
 /// Whether the block should be considered above or below the anchor line
 #[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
 pub enum BlockDisposition {
@@ -157,6 +212,14 @@ impl BlockLike for TransformBlock {
 }
 
 impl TransformBlock {
+    pub fn id(&self) -> TransformBlockId {
+        match self {
+            TransformBlock::Custom(block) => TransformBlockId::Block(block.id),
+            TransformBlock::ExcerptHeader { id, .. } => TransformBlockId::ExcerptHeader(*id),
+            TransformBlock::ExcerptFooter { id, .. } => TransformBlockId::ExcerptFooter(*id),
+        }
+    }
+
     fn disposition(&self) -> BlockDisposition {
         match self {
             TransformBlock::Custom(block) => block.disposition,

crates/editor/src/editor.rs

@@ -68,12 +68,12 @@ use git::diff_hunk_to_display;
 use gpui::{
     div, impl_actions, point, prelude::*, px, relative, size, uniform_list, Action, AnyElement,
     AppContext, AsyncWindowContext, AvailableSpace, BackgroundExecutor, Bounds, ClipboardItem,
-    Context, DispatchPhase, ElementId, EventEmitter, FocusHandle, FocusOutEvent, FocusableView,
-    FontId, FontStyle, FontWeight, HighlightStyle, Hsla, InteractiveText, KeyContext,
-    ListSizingBehavior, Model, MouseButton, PaintQuad, ParentElement, Pixels, Render, SharedString,
-    Size, StrikethroughStyle, Styled, StyledText, Subscription, Task, TextStyle, UnderlineStyle,
-    UniformListScrollHandle, View, ViewContext, ViewInputHandler, VisualContext, WeakFocusHandle,
-    WeakView, WhiteSpace, WindowContext,
+    Context, DispatchPhase, ElementId, EntityId, EventEmitter, FocusHandle, FocusOutEvent,
+    FocusableView, FontId, FontStyle, FontWeight, HighlightStyle, Hsla, InteractiveText,
+    KeyContext, ListSizingBehavior, Model, MouseButton, PaintQuad, ParentElement, Pixels, Render,
+    SharedString, Size, StrikethroughStyle, Styled, StyledText, Subscription, Task, TextStyle,
+    UnderlineStyle, UniformListScrollHandle, View, ViewContext, ViewInputHandler, VisualContext,
+    WeakFocusHandle, WeakView, WhiteSpace, WindowContext,
 };
 use highlight_matching_bracket::refresh_matching_bracket_highlights;
 use hover_popover::{hide_hover, HoverState};
@@ -9762,7 +9762,7 @@ impl Editor {
                         *block_id,
                         (
                             None,
-                            diagnostic_block_renderer(diagnostic.clone(), is_valid),
+                            diagnostic_block_renderer(diagnostic.clone(), None, true, is_valid),
                         ),
                     );
                 }
@@ -9815,7 +9815,7 @@ impl Editor {
                             style: BlockStyle::Fixed,
                             position: buffer.anchor_after(entry.range.start),
                             height: message_height,
-                            render: diagnostic_block_renderer(diagnostic, true),
+                            render: diagnostic_block_renderer(diagnostic, None, true, true),
                             disposition: BlockDisposition::Below,
                         }
                     }),
@@ -12684,11 +12684,17 @@ impl InvalidationRegion for SnippetState {
     }
 }
 
-pub fn diagnostic_block_renderer(diagnostic: Diagnostic, _is_valid: bool) -> RenderBlock {
-    let (text_without_backticks, code_ranges) = highlight_diagnostic_message(&diagnostic);
+pub fn diagnostic_block_renderer(
+    diagnostic: Diagnostic,
+    max_message_rows: Option<u8>,
+    allow_closing: bool,
+    _is_valid: bool,
+) -> RenderBlock {
+    let (text_without_backticks, code_ranges) =
+        highlight_diagnostic_message(&diagnostic, max_message_rows);
 
     Box::new(move |cx: &mut BlockContext| {
-        let group_id: SharedString = cx.block_id.to_string().into();
+        let group_id: SharedString = cx.transform_block_id.to_string().into();
 
         let mut text_style = cx.text_style().clone();
         text_style.color = diagnostic_style(diagnostic.severity, cx.theme().status());
@@ -12700,14 +12706,15 @@ pub fn diagnostic_block_renderer(diagnostic: Diagnostic, _is_valid: bool) -> Ren
 
         let multi_line_diagnostic = diagnostic.message.contains('\n');
 
-        let buttons = |diagnostic: &Diagnostic, block_id: usize| {
+        let buttons = |diagnostic: &Diagnostic, block_id: TransformBlockId| {
             if multi_line_diagnostic {
                 v_flex()
             } else {
                 h_flex()
             }
-            .children(diagnostic.is_primary.then(|| {
-                IconButton::new(("close-block", block_id), IconName::XCircle)
+            .when(allow_closing, |div| {
+                div.children(diagnostic.is_primary.then(|| {
+                    IconButton::new(("close-block", EntityId::from(block_id)), IconName::XCircle)
                         .icon_color(Color::Muted)
                         .size(ButtonSize::Compact)
                         .style(ButtonStyle::Transparent)
@@ -12715,8 +12722,9 @@ pub fn diagnostic_block_renderer(diagnostic: Diagnostic, _is_valid: bool) -> Ren
                         .on_click(move |_click, cx| cx.dispatch_action(Box::new(Cancel)))
                         .tooltip(|cx| Tooltip::for_action("Close Diagnostics", &Cancel, cx))
                 }))
+            })
             .child(
-                IconButton::new(("copy-block", block_id), IconName::Copy)
+                IconButton::new(("copy-block", EntityId::from(block_id)), IconName::Copy)
                     .icon_color(Color::Muted)
                     .size(ButtonSize::Compact)
                     .style(ButtonStyle::Transparent)
@@ -12729,12 +12737,12 @@ pub fn diagnostic_block_renderer(diagnostic: Diagnostic, _is_valid: bool) -> Ren
             )
         };
 
-        let icon_size = buttons(&diagnostic, cx.block_id)
+        let icon_size = buttons(&diagnostic, cx.transform_block_id)
             .into_any_element()
             .layout_as_root(AvailableSpace::min_size(), cx);
 
         h_flex()
-            .id(cx.block_id)
+            .id(cx.transform_block_id)
             .group(group_id.clone())
             .relative()
             .size_full()
@@ -12746,7 +12754,7 @@ pub fn diagnostic_block_renderer(diagnostic: Diagnostic, _is_valid: bool) -> Ren
                     .w(cx.anchor_x - cx.gutter_dimensions.width - icon_size.width)
                     .flex_shrink(),
             )
-            .child(buttons(&diagnostic, cx.block_id))
+            .child(buttons(&diagnostic, cx.transform_block_id))
             .child(div().flex().flex_shrink_0().child(
                 StyledText::new(text_without_backticks.clone()).with_highlights(
                     &text_style,
@@ -12765,7 +12773,10 @@ pub fn diagnostic_block_renderer(diagnostic: Diagnostic, _is_valid: bool) -> Ren
     })
 }
 
-pub fn highlight_diagnostic_message(diagnostic: &Diagnostic) -> (SharedString, Vec<Range<usize>>) {
+pub fn highlight_diagnostic_message(
+    diagnostic: &Diagnostic,
+    mut max_message_rows: Option<u8>,
+) -> (SharedString, Vec<Range<usize>>) {
     let mut text_without_backticks = String::new();
     let mut code_ranges = Vec::new();
 
@@ -12777,18 +12788,45 @@ pub fn highlight_diagnostic_message(diagnostic: &Diagnostic) -> (SharedString, V
 
     let mut prev_offset = 0;
     let mut in_code_block = false;
+    let mut newline_indices = diagnostic
+        .message
+        .match_indices('\n')
+        .map(|(ix, _)| ix)
+        .fuse()
+        .peekable();
     for (ix, _) in diagnostic
         .message
         .match_indices('`')
         .chain([(diagnostic.message.len(), "")])
     {
+        let mut trimmed_ix = ix;
+        while let Some(newline_index) = newline_indices.peek() {
+            if *newline_index < ix {
+                if let Some(rows_left) = &mut max_message_rows {
+                    if *rows_left == 0 {
+                        trimmed_ix = newline_index.saturating_sub(1);
+                        break;
+                    } else {
+                        *rows_left -= 1;
+                    }
+                }
+                let _ = newline_indices.next();
+            } else {
+                break;
+            }
+        }
         let prev_len = text_without_backticks.len();
-        text_without_backticks.push_str(&diagnostic.message[prev_offset..ix]);
-        prev_offset = ix + 1;
+        let new_text = &diagnostic.message[prev_offset..trimmed_ix];
+        text_without_backticks.push_str(new_text);
         if in_code_block {
             code_ranges.push(prev_len..text_without_backticks.len());
         }
+        prev_offset = trimmed_ix + 1;
         in_code_block = !in_code_block;
+        if trimmed_ix != ix {
+            text_without_backticks.push_str("...");
+            break;
+        }
     }
 
     (text_without_backticks.into(), code_ranges)

crates/editor/src/element.rs

@@ -1,4 +1,5 @@
 use crate::editor_settings::ScrollBeyondLastLine;
+use crate::TransformBlockId;
 use crate::{
     blame_entry_tooltip::{blame_entry_relative_timestamp, BlameEntryTooltip},
     display_map::{
@@ -31,7 +32,7 @@ use gpui::{
     anchored, deferred, div, fill, outline, point, px, quad, relative, size, svg,
     transparent_black, Action, AnchorCorner, AnyElement, AvailableSpace, Bounds, ClipboardItem,
     ContentMask, Corners, CursorStyle, DispatchPhase, Edges, Element, ElementInputHandler, Entity,
-    FontId, GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, Length,
+    EntityId, FontId, GlobalElementId, Hitbox, Hsla, InteractiveElement, IntoElement, Length,
     ModifiersChangedEvent, MouseButton, MouseDownEvent, MouseMoveEvent, MouseUpEvent, PaintQuad,
     ParentElement, Pixels, ScrollDelta, ScrollWheelEvent, ShapedLine, SharedString, Size,
     StatefulInteractiveElement, Style, Styled, TextRun, TextStyle, TextStyleRefinement, View,
@@ -1939,7 +1940,6 @@ impl EditorElement {
         line_layouts: &[LineWithInvisibles],
         cx: &mut WindowContext,
     ) -> Vec<BlockLayout> {
-        let mut block_id = 0;
         let (fixed_blocks, non_fixed_blocks) = snapshot
             .blocks_in_range(rows.clone())
             .partition::<Vec<_>, _>(|(_, block)| match block {
@@ -1950,7 +1950,7 @@ impl EditorElement {
 
         let render_block = |block: &TransformBlock,
                             available_space: Size<AvailableSpace>,
-                            block_id: usize,
+                            block_id: TransformBlockId,
                             block_row_start: DisplayRow,
                             cx: &mut WindowContext| {
             let mut element = match block {
@@ -1974,7 +1974,7 @@ impl EditorElement {
                         gutter_dimensions,
                         line_height,
                         em_width,
-                        block_id,
+                        transform_block_id: block_id,
                         max_width: text_hitbox.size.width.max(*scroll_width),
                         editor_style: &self.style,
                     })
@@ -2058,7 +2058,7 @@ impl EditorElement {
                         let header_padding = px(6.0);
 
                         v_flex()
-                            .id(("path excerpt header", block_id))
+                            .id(("path excerpt header", EntityId::from(block_id)))
                             .size_full()
                             .p(header_padding)
                             .child(
@@ -2166,7 +2166,7 @@ impl EditorElement {
                             }))
                     } else {
                         v_flex()
-                            .id(("excerpt header", block_id))
+                            .id(("excerpt header", EntityId::from(block_id)))
                             .size_full()
                             .child(
                                 div()
@@ -2314,7 +2314,10 @@ impl EditorElement {
                 }
 
                 TransformBlock::ExcerptFooter { id, .. } => {
-                    let element = v_flex().id(("excerpt footer", block_id)).size_full().child(
+                    let element = v_flex()
+                        .id(("excerpt footer", EntityId::from(block_id)))
+                        .size_full()
+                        .child(
                             h_flex()
                                 .justify_end()
                                 .flex_none()
@@ -2332,7 +2335,9 @@ impl EditorElement {
                                                 .group("")
                                                 .hover(|style| {
                                                     style.text_color(
-                                                    cx.theme().colors().editor_active_line_number,
+                                                        cx.theme()
+                                                            .colors()
+                                                            .editor_active_line_number,
                                                     )
                                                 }),
                                         )
@@ -2372,8 +2377,8 @@ impl EditorElement {
                 AvailableSpace::MinContent,
                 AvailableSpace::Definite(block.height() as f32 * line_height),
             );
+            let block_id = block.id();
             let (element, element_size) = render_block(block, available_space, block_id, row, cx);
-            block_id += 1;
             fixed_block_max_width = fixed_block_max_width.max(element_size.width + em_width);
             blocks.push(BlockLayout {
                 row,
@@ -2401,8 +2406,8 @@ impl EditorElement {
                 AvailableSpace::Definite(width),
                 AvailableSpace::Definite(block.height() as f32 * line_height),
             );
+            let block_id = block.id();
             let (element, _) = render_block(block, available_space, block_id, row, cx);
-            block_id += 1;
             blocks.push(BlockLayout {
                 row,
                 element,

crates/feature_flags/src/feature_flags.rs

@@ -34,6 +34,11 @@ impl FeatureFlag for TerminalInlineAssist {
     const NAME: &'static str = "terminal-inline-assist";
 }
 
+pub struct GroupedDiagnostics {}
+impl FeatureFlag for GroupedDiagnostics {
+    const NAME: &'static str = "grouped-diagnostics";
+}
+
 pub trait FeatureFlagViewExt<V: 'static> {
     fn observe_flag<T: FeatureFlag, F>(&mut self, callback: F) -> Subscription
     where

crates/multi_buffer/src/multi_buffer.rs

@@ -6,7 +6,7 @@ use clock::ReplicaId;
 use collections::{BTreeMap, Bound, HashMap, HashSet};
 use futures::{channel::mpsc, SinkExt};
 use git::diff::DiffHunk;
-use gpui::{AppContext, EventEmitter, Model, ModelContext};
+use gpui::{AppContext, EntityId, EventEmitter, Model, ModelContext};
 use itertools::Itertools;
 use language::{
     char_kind,
@@ -49,6 +49,12 @@ const NEWLINES: &[u8] = &[b'\n'; u8::MAX as usize];
 #[derive(Debug, Default, Clone, Copy, Hash, PartialEq, Eq, PartialOrd, Ord)]
 pub struct ExcerptId(usize);
 
+impl From<ExcerptId> for EntityId {
+    fn from(id: ExcerptId) -> Self {
+        EntityId::from(id.0 as u64)
+    }
+}
+
 /// One or more [`Buffers`](Buffer) being edited in a single view.
 ///
 /// See <https://zed.dev/features#multi-buffers>
@@ -302,6 +308,7 @@ struct ExcerptBytes<'a> {
     reversed: bool,
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub enum ExpandExcerptDirection {
     Up,
     Down,
@@ -4679,7 +4686,7 @@ impl ToPointUtf16 for PointUtf16 {
     }
 }
 
-fn build_excerpt_ranges<T>(
+pub fn build_excerpt_ranges<T>(
     buffer: &BufferSnapshot,
     ranges: &[Range<T>],
     context_line_count: u32,

crates/project/src/project.rs

@@ -11720,7 +11720,7 @@ fn sort_search_matches(search_matches: &mut Vec<SearchMatchCandidate>, cx: &AppC
     });
 }
 
-fn compare_paths(
+pub fn compare_paths(
     (path_a, a_is_file): (&Path, bool),
     (path_b, b_is_file): (&Path, bool),
 ) -> cmp::Ordering {