[pcbeingused333]

Description

The audit log (audit_log in myclirc), the \T tee file and the \o/\once file (plus the pipe-once stdout file) were opened with the locale's default encoding. Under a non-UTF-8 locale (Windows cp1252, LANG=C) writing CJK or emoji output raises UnicodeEncodeError, so the entry is lost. The --logfile option (click.File(mode='a', encoding='utf-8')) and the config/history files already use UTF-8; these four open() calls were the remaining ones without it.

Fix: pass encoding='utf-8' in client.py (audit log) and in io_commands.py (set_tee, _set_once_file, flush_pipe_once_if_written).

Tests: test_init_opens_audit_log_from_config now asserts the audit log is UTF-8, and the new test_tee_and_once_files_are_opened_as_utf8 writes 日本語 🙂 through \T and checks the \o file encoding. Both fail on main and pass with the fix when run with LC_ALL=C PYTHONUTF8=0 PYTHONCOERCECLOCALE=0 uv run pytest mycli_test/pytests/test_client.py mycli_test/pytests/test_special_io_commands.py.

Disclosure: this change was prepared with the help of an AI coding assistant (Claude); the submitter is responsible for it.

Checklist

• I added this contribution to the changelog.md file.
• I added my name to the mycli/AUTHORS.txt file (or it's already there).
• To lint and format the code, I ran

  uv run ruff check && uv run ruff format && uv run mypy --install-types .

ruff check and ruff format --check pass on the touched files; mypy was not run (the change only adds an encoding keyword).

[rolandwalker]

Thank you!

[rolandwalker]

Released in https://github.com/dbcli/mycli/releases/tag/v2.31.0 !