From 7b277d2efdb25940093b801f3b99e974f88859e8 Mon Sep 17 00:00:00 2001
From: Conrad Irwin <conrad.irwin@gmail.com>
Date: Mon, 24 Feb 2025 15:57:54 -0700
Subject: [PATCH] Fix run indicators jumping when buffer content changes.
 (#25507)

Co-authored-by: Anthony Eid <hello@anthonyeid.me>

Release Notes:

- Fix run indicators jumping when content changes

---------

Co-authored-by: Anthony Eid <hello@anthonyeid.me>
---
 crates/editor/src/editor.rs       |  8 ++++----
 crates/editor/src/editor_tests.rs |  5 +++--
 crates/editor/src/element.rs      | 19 ++++++++++---------
 3 files changed, 17 insertions(+), 15 deletions(-)

diff --git a/crates/editor/src/editor.rs b/crates/editor/src/editor.rs
index d24b43ea0f..67fdc790c0 100644
--- a/crates/editor/src/editor.rs
+++ b/crates/editor/src/editor.rs
@@ -524,7 +524,7 @@ impl ScrollbarMarkerState {
 #[derive(Clone, Debug)]
 struct RunnableTasks {
     templates: Vec<(TaskSourceKind, TaskTemplate)>,
-    offset: MultiBufferOffset,
+    offset: multi_buffer::Anchor,
     // We need the column at which the task context evaluation should take place (when we're spawning it via gutter).
     column: u32,
     // Values of all named captures, including those starting with '_'
@@ -551,8 +551,6 @@ struct ResolvedTasks {
     templates: SmallVec<[(TaskSourceKind, ResolvedTask); 1]>,
     position: Anchor,
 }
-#[derive(Copy, Clone, Debug)]
-struct MultiBufferOffset(usize);
 #[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
 struct BufferOffset(usize);
 
@@ -10848,7 +10846,9 @@ impl Editor {
                     (runnable.buffer_id, row),
                     RunnableTasks {
                         templates: tasks,
-                        offset: MultiBufferOffset(runnable.run_range.start),
+                        offset: snapshot
+                            .buffer_snapshot
+                            .anchor_before(runnable.run_range.start),
                         context_range,
                         column: point.column,
                         extra_variables: runnable.extra_captures,
diff --git a/crates/editor/src/editor_tests.rs b/crates/editor/src/editor_tests.rs
index dc5173c8e0..13380c45dd 100644
--- a/crates/editor/src/editor_tests.rs
+++ b/crates/editor/src/editor_tests.rs
@@ -15337,11 +15337,12 @@ async fn test_find_enclosing_node_with_task(cx: &mut TestAppContext) {
     });
 
     editor.update_in(cx, |editor, window, cx| {
+        let snapshot = editor.buffer().read(cx).snapshot(cx);
         editor.tasks.insert(
             (buffer.read(cx).remote_id(), 3),
             RunnableTasks {
                 templates: vec![],
-                offset: MultiBufferOffset(43),
+                offset: snapshot.anchor_before(43),
                 column: 0,
                 extra_variables: HashMap::default(),
                 context_range: BufferOffset(43)..BufferOffset(85),
@@ -15351,7 +15352,7 @@ async fn test_find_enclosing_node_with_task(cx: &mut TestAppContext) {
             (buffer.read(cx).remote_id(), 8),
             RunnableTasks {
                 templates: vec![],
-                offset: MultiBufferOffset(86),
+                offset: snapshot.anchor_before(86),
                 column: 0,
                 extra_variables: HashMap::default(),
                 context_range: BufferOffset(86)..BufferOffset(191),
diff --git a/crates/editor/src/element.rs b/crates/editor/src/element.rs
index 7d791777af..a0c0efe5ee 100644
--- a/crates/editor/src/element.rs
+++ b/crates/editor/src/element.rs
@@ -50,7 +50,7 @@ use language::{
 use lsp::DiagnosticSeverity;
 use multi_buffer::{
     Anchor, ExcerptId, ExcerptInfo, ExpandExcerptDirection, MultiBufferPoint, MultiBufferRow,
-    RowInfo, ToOffset,
+    RowInfo,
 };
 use project::project_settings::{self, GitGutterSetting, ProjectSettings};
 use settings::Settings;
@@ -2062,21 +2062,22 @@ impl EditorElement {
                     None
                 };
 
-            let offset_range_start = snapshot
-                .display_point_to_anchor(DisplayPoint::new(range.start, 0), Bias::Left)
-                .to_offset(&snapshot.buffer_snapshot);
-            let offset_range_end = snapshot
-                .display_point_to_anchor(DisplayPoint::new(range.end, 0), Bias::Right)
-                .to_offset(&snapshot.buffer_snapshot);
+            let offset_range_start =
+                snapshot.display_point_to_point(DisplayPoint::new(range.start, 0), Bias::Left);
+
+            let offset_range_end =
+                snapshot.display_point_to_point(DisplayPoint::new(range.end, 0), Bias::Right);
 
             editor
                 .tasks
                 .iter()
                 .filter_map(|(_, tasks)| {
-                    if tasks.offset.0 < offset_range_start || tasks.offset.0 >= offset_range_end {
+                    let multibuffer_point = tasks.offset.to_point(&snapshot.buffer_snapshot);
+                    if multibuffer_point < offset_range_start
+                        || multibuffer_point > offset_range_end
+                    {
                         return None;
                     }
-                    let multibuffer_point = tasks.offset.0.to_point(&snapshot.buffer_snapshot);
                     let multibuffer_row = MultiBufferRow(multibuffer_point.row);
                     let buffer_folded = snapshot
                         .buffer_snapshot