prepare-commit-msg

#!/bin/bash
# happen the number in the commit message before the first '-' in branch name if any

BRANCH="$(git rev-parse --abbrev-ref HEAD)"
# If branch name is HEAD (during rebase for example), do nothing
if [ $BRANCH != 'HEAD' ]
then
    ISSUE_ID="${BRANCH%%-*}"
    # If branch name = issue_id or issue_id is not an integer, it means that branch name has no wished format -> do nothing
    if [[ $BRANCH != $ISSUE_ID && $ISSUE_ID =~ ^[0-9]+$ ]]
    then
        case "$2," in
          ,|message,|template,)
            sed -i.bak "1i\\
[#$ISSUE_ID] " "$1" ;;
        esac
    fi
fi