dispatch: extract maybe-use-repr formatting to helper function I think this makes the code much clearer. I had to think for a bit to unpack the old-school `condition and if-true or if-false` dance, and formatting argument lists here shouldn't be performance critical.

# 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