git `commit-msg` pre commit hook JIRA regex check.

commit-msg-regex.sh

#!/bin/bash

# This is a simple bash script to regex check the start of a git commit
# message for a JIRA tag.
# This is usefull for the pre commit `commit-msg` git hook.

# Obviously feel free to tailor it to your specific use case.
# Finally make sure you remember chmod the file to give execute permissions.

# Enjoy =]

regex="^[A-Z]{1,4}[-]{1}[1-9]{1,3}"
var="PLSV-359"
var2="Incorrect jira tag"
var3="S-9"

if [[ "$var" =~ $regex ]]
then
  echo "matches"
else
  echo "doesn't match!"
fi

if [[ "$var" =~ $regex ]]
then
  echo "PLSV-359 matches"
fi

if [[ "$var2" =~ $regex ]]
then
  echo "Incorrect jira tag matches"
fi

if [[ "$var3" =~ $regex ]]
then
  echo "S-9 matches"
fi