Buffer OSC 0 terminal title writing

src/output.rs

@@ -9,6 +9,7 @@
 use std::cell::{RefCell, RefMut};
 use std::ffi::CStr;
 use std::io::{Result, Write};
+use std::ops::{Deref, DerefMut};
 use std::os::fd::RawFd;
 use std::sync::atomic::{AtomicU8, Ordering};
 
@@ -481,6 +482,20 @@ fn drop(&mut self) {
     }
 }
 
+impl Deref for BufferedOutputter<'_> {
+    type Target = Outputter;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for BufferedOutputter<'_> {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}
+
 impl<'a> Output for BufferedOutputter<'a> {
     fn write_bytes(&mut self, buf: &[u8]) {
         self.0.write_bytes(buf);

src/reader.rs

@@ -4535,6 +4535,7 @@ pub fn reader_write_title(
         Some(&mut lst),
         /*apply_exit_status=*/ false,
     );
+    let mut out = BufferedOutputter::new(Outputter::stdoutput());
     if !lst.is_empty() {
         let mut title_line = L!("\x1B]0;").to_owned();
         for val in &lst {
@@ -4542,15 +4543,13 @@ pub fn reader_write_title(
         }
         title_line.push_str("\x07"); // BEL
         let narrow = wcs2string(&title_line);
-        let _ = write_loop(&STDOUT_FILENO, &narrow);
+        out.write_bytes(&narrow);
     }
 
-    Outputter::stdoutput()
-        .borrow_mut()
-        .set_color(RgbColor::RESET, RgbColor::RESET);
+    out.set_color(RgbColor::RESET, RgbColor::RESET);
     if reset_cursor_position && !lst.is_empty() {
         // Put the cursor back at the beginning of the line (issue #2453).
-        let _ = write_loop(&STDOUT_FILENO, b"\r");
+        out.write_bytes(b"\r");
     }
 }