require_ascii = subprocess.run(
"git config --type=bool hooks.allownonascii",
shell=True,
capture_output=True,
text=True
).stdout != 'true\n'
if require_ascii:
file_names_are_ascii = subprocess.run(
"git diff-index --cached --name-only --diff-filter=A -z " + against,
shell=True,
capture_output=True,
text=True
).stdout.isascii()
if not file_names_are_ascii:
print(ASCII_ERROR_MESSAGE, file=sys.stderr)
exit(1)