Replace Buffer::request_autoindent API with ::edit_with_autoindent

When computing the "previous autoindent suggestion", we can't just
use the old tree and the current text. We need to find out what the
suggestion would have been before we made any changes.

crates/editor/src/lib.rs

@@ -747,7 +747,6 @@ impl Editor {
         if !self.skip_autoclose_end(text, cx) {
             self.start_transaction(cx);
             self.insert(text, cx);
-            self.request_autoindent(cx);
             self.autoclose_pairs(cx);
             self.end_transaction(cx);
         }
@@ -769,7 +768,7 @@ impl Editor {
         let mut new_selections = Vec::new();
         self.buffer.update(cx, |buffer, cx| {
             let edit_ranges = old_selections.iter().map(|(_, range)| range.clone());
-            buffer.edit(edit_ranges, text, cx);
+            buffer.edit_with_autoindent(edit_ranges, text, cx);
             let text_len = text.len() as isize;
             let mut delta = 0_isize;
             new_selections = old_selections
@@ -795,17 +794,6 @@ impl Editor {
         self.end_transaction(cx);
     }
 
-    fn request_autoindent(&mut self, cx: &mut ViewContext<Self>) {
-        let selections = self.selections(cx);
-        let tab_size = self.build_settings.borrow()(cx).tab_size as u8;
-        self.buffer.update(cx, |buffer, _| {
-            for selection in selections.iter() {
-                let row = selection.head().to_point(&*buffer).row;
-                buffer.request_autoindent_for_line(row, tab_size, true);
-            }
-        });
-    }
-
     fn autoclose_pairs(&mut self, cx: &mut ViewContext<Self>) {
         let selections = self.selections(cx);
         let new_autoclose_pair_state = self.buffer.update(cx, |buffer, cx| {