revset: do not partial-match operator and function names in optimize()
It was error-prone, and actually there was a typo, s/ancestorspec/ancestor/.
# 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