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fix(cli): batch resize history replay

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Xu Zhizhong 2026-05-13 20:25:35 +08:00 • committed by Teknium
parent fe83c4001b
commit 06c6c1f0f2
2 changed files with 26 additions and 3 deletions
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12
cli.py
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@ -1473,6 +1473,7 @@ def _replay_output_history() -> None:
return return
_OUTPUT_HISTORY_REPLAYING = True _OUTPUT_HISTORY_REPLAYING = True
try: try:
rendered_lines = []
for entry in tuple(_OUTPUT_HISTORY): for entry in tuple(_OUTPUT_HISTORY):
if callable(entry): if callable(entry):
try: try:
@ -1483,8 +1484,15 @@ def _replay_output_history() -> None:
lines = lines.splitlines() lines = lines.splitlines()
else: else:
lines = [entry] lines = [entry]
for line in lines: rendered_lines.extend(str(line) for line in lines)
_pt_print(_PT_ANSI(str(line))) if rendered_lines:
# Replay after resize can contain hundreds of history lines. A
# per-line prompt_toolkit print forces one synchronous terminal I/O
# and redraw cycle per line, which users perceive as a waterfall of
# old output. Keep the existing history contents unchanged, but
# emit the replay as one ANSI payload so resize recovery does a
# single prompt_toolkit print/redraw.
_pt_print(_PT_ANSI("\n".join(rendered_lines)))
except Exception: except Exception:
pass pass
finally: finally:

17
tests/cli/test_cprint_bg_thread.py
View file

@ -258,10 +258,25 @@ def test_replay_output_history_rerenders_callable_entries(monkeypatch):
cli._replay_output_history() cli._replay_output_history()
assert widths_seen == ["called"] assert widths_seen == ["called"]
assert printed == ["top border", "body"] assert printed == ["top border\nbody"]
assert list(cli._OUTPUT_HISTORY) == [_render_current_width] assert list(cli._OUTPUT_HISTORY) == [_render_current_width]
def test_replay_output_history_batches_rendered_lines_into_one_print(monkeypatch):
cli._configure_output_history(True, 10)
cli._record_output_history("first line")
cli._record_output_history("second line")
cli._record_output_history_entry(lambda: ["third line", "fourth line"])
printed = []
monkeypatch.setattr(cli, "_pt_print", lambda value: printed.append(value))
monkeypatch.setattr(cli, "_PT_ANSI", lambda text: text)
cli._replay_output_history()
assert printed == ["first line\nsecond line\nthird line\nfourth line"]
def test_suspend_output_history_blocks_recording(): def test_suspend_output_history_blocks_recording():
cli._configure_output_history(True, 10) cli._configure_output_history(True, 10)