Determine Buffer::is_dirty based on the rope's fingerprint

crates/editor/src/display_map/fold_map.rs

@@ -5,7 +5,7 @@ use crate::{
 };
 use collections::BTreeMap;
 use gpui::fonts::HighlightStyle;
-use language::{Chunk, Edit, Point, PointUtf16, TextSummary};
+use language::{Chunk, Edit, Point, TextSummary};
 use parking_lot::Mutex;
 use std::{
     any::TypeId,

crates/editor/src/editor.rs

@@ -5508,7 +5508,7 @@ impl Editor {
                 cx.emit(Event::BufferEdited);
             }
             language::Event::Reparsed => cx.emit(Event::Reparsed),
-            language::Event::Dirtied => cx.emit(Event::Dirtied),
+            language::Event::DirtyChanged => cx.emit(Event::Dirtied),
             language::Event::Saved => cx.emit(Event::Saved),
             language::Event::FileHandleChanged => cx.emit(Event::TitleChanged),
             language::Event::Reloaded => cx.emit(Event::TitleChanged),