terminal: Fix last character of IME marked text not being deleted (#46224)

crates/terminal_view/src/terminal_element.rs

@@ -1488,12 +1488,12 @@ impl InputHandler for TerminalInputHandler {
         &mut self,
         _range_utf16: Option<std::ops::Range<usize>>,
         new_text: &str,
-        new_marked_range: Option<std::ops::Range<usize>>,
+        _new_marked_range: Option<std::ops::Range<usize>>,
         _window: &mut Window,
         cx: &mut App,
     ) {
         self.terminal_view.update(cx, |view, view_cx| {
-            view.set_marked_text(new_text.to_string(), new_marked_range, view_cx);
+            view.set_marked_text(new_text.to_string(), view_cx);
         });
     }
 

crates/terminal_view/src/terminal_view.rs

@@ -62,7 +62,6 @@ use std::{
 
 struct ImeState {
     marked_text: String,
-    marked_range_utf16: Option<Range<usize>>,
 }
 
 const CURSOR_BLINK_INTERVAL: Duration = Duration::from_millis(500);
@@ -327,16 +326,11 @@ impl TerminalView {
     }
 
     /// Sets the marked (pre-edit) text from the IME.
-    pub(crate) fn set_marked_text(
+    pub(crate) fn set_marked_text(&mut self, text: String, cx: &mut Context<Self>) {
-        &mut self,
+        if text.is_empty() {
-        text: String,
+            return self.clear_marked_text(cx);
-        range: Option<Range<usize>>,
+        }
-        cx: &mut Context<Self>,
+        self.ime_state = Some(ImeState { marked_text: text });
-    ) {
-        self.ime_state = Some(ImeState {
-            marked_text: text,
-            marked_range_utf16: range,
-        });
         cx.notify();
     }
 
@@ -344,7 +338,7 @@ impl TerminalView {
     pub(crate) fn marked_text_range(&self) -> Option<Range<usize>> {
         self.ime_state
             .as_ref()
-            .and_then(|state| state.marked_range_utf16.clone())
+            .map(|state| 0..state.marked_text.encode_utf16().count())
     }
 
     /// Clears the marked (pre-edit) text state.