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fix(cli): improve spinner line clearing to prevent garbled output with prompt_toolkit

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teknium1 2026-02-27 13:49:06 -08:00
parent e09ef6b8bc
commit c92bdd8785
2 changed files with 17 additions and 9 deletions
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10
agent/display.py
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@ -182,9 +182,8 @@ class KawaiiSpinner:
frame = self.spinner_frames[self.frame_idx % len(self.spinner_frames)]
elapsed = time.time() - self.start_time
line = f" {frame} {self.message} ({elapsed:.1f}s)"
# Use \r + ANSI erase-to-EOL in a single write to avoid the
# two-phase clear+redraw that flickers under patch_stdout.
self._write(f"\r\033[K{line}", end='', flush=True)
pad = max(self.last_line_len - len(line), 0)
self._write(f"\r{line}{' ' * pad}", end='', flush=True)
self.last_line_len = len(line)
self.frame_idx += 1
time.sleep(0.12)
@ -204,7 +203,10 @@ class KawaiiSpinner:
self.running = False
if self.thread:
self.thread.join(timeout=0.5)
self._write('\r\033[K', end='', flush=True)
# Clear the spinner line with spaces instead of \033[K to avoid
# garbled escape codes when prompt_toolkit's patch_stdout is active.
blanks = ' ' * max(self.last_line_len + 5, 40)
self._write(f"\r{blanks}\r", end='', flush=True)
if final_message:
self._write(f" {final_message}", flush=True)