hghave: make the description for "clang-format" ascii test-fix-clang-format.t suddenly started failing on Windows by wiping the whole file content, and replacing with an error: $TESTTMP.sh: $TESTTMP.sh: cannot execute binary file Odd, because I don't have `clang-format` installed, so the test should be skipped. The problem started with 73cf8b56c2f5, and I noticed that running `hghave` manually resulted in a `SyntaxError` (so I can't see how this isn't broken everywhere, but maybe it's because I'm using py3.9 on Windows): $ py hghave --list Traceback (most recent call last): File "hghave", line 8, in <module> import hghave File "c:\Users\Matt\hg\tests\hghave.py", line 627 SyntaxError: Non-ASCII character '\xe2' in file c:\Users\Matt\hg\tests\hghave.py on line 627, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details