[neomutt-devel] clang-format pre-commit hook

[Julian Andres Klode]

Hi everyone,

I created a simple pre-commit hook to automatically run
clang-format on all changed files and prevent a commit
if there is a formatting error. This is quite useful.

==== START OF SCRIPT
result=0
for file in `git diff-index --cached --name-only HEAD` ; do
  clang-format  ${file} > ${GIT_DIR}/current_file
  colordiff --label "$file (to be committed)" --label "$file (reformatted)" -u ${file} ${GIT_DIR}/current_file || result=1
done
rm ${GIT_DIR}/current_file
exit $result
==== END OF SCRIPT

I usually take the pre-commit.sample, rename that to pre-commit
change "exec git diff-index --check --cached $against --" to
"git diff-index --check --cached $against -- || exit 1" and then
append the stuff above.

Maybe it's useful for somebody else too.

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