test-obsmarker-template: run mkcommit in subshell to isolate envvars
I don't know if it is a feature or a bug, but it appears that environment
variables passed to a shell function persist on /bin/sh.
# 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
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false