Commit message validation for JIRA ticket number.

commit-msg

#!/bin/sh

MSG=$(head -n 1 $1)
PATTERN='[A-Z]+-[0-9]+: .'

# Allows us to read user input below, assigns stdin to keyboard
exec < /dev/tty

if [[ ! $MSG =~ $PATTERN ]]; then
  echo 'Commit message does not match the format "ABC-123: i did some stuff".'
  read -p 'Continue anyways? [y/n]' yn
  case $yn in
    [Yy] ) break;;
      * ) echo 'Commit aborted.'; exit 1;;
  esac
fi