.editorconfig

run-tests: fix broken regular expression

The regular expression in use passed tests because the test repo only
has single-digit changesets present. When I tried to use this for real
today, it broke, because the regular expression would only match a
single digit.

https://xkcd.com/1171/, or something like that.

# 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