revsetlang: check arguments passed to ancestors() before optimizing to only()
Future patches will add depth parameter to ancestors(), which isn't compatible
with only().
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true