cmdutil: comprehensively document the interface of export
I want to make some improvements here, but in order to make future
patches easier to review I want to document the current state of the
world.
# 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