Git post commit: skip --amend and rebase

Question

I have a post-commit hook that does stuff un ruby. It works very well but in some cases I would like to skip the code execution when I do a rebase or when I do a commit --amend.

Answer 1

If you want to detect git commit --amend from a hook, this is your best option

bash

if [[ $(ps -ocommand= -p $PPID) == "git commit --amend" ]]; then
    echo "always allow git commit --amend"
    exit 0
fi

ruby

parent=`ps -ocommand= -p #{Process.ppid}`.chomp
if parent == "git commit --amend"
  # Always allow an amend
  puts "always allow git commit --amend"
  exit 0
end

git and shell aliases are expanded in the shell output, so this covers those cases too

Inspiration: https://github.com/brigade/overcommit/issues/146