Find long commit messages

find-long-commit-messages.sh

#!/bin/bash

while read -r commit_hash
do
  message=$(
    git cat-file commit "${commit_hash}" |
      sed '1,/^$/d'
  )

  if [ "${message:0:5}" = 'Merge' ] || [ "${message:0:6}" = 'Revert' ]
  then
    continue
  fi

  if [ "${#message}" -gt 200 ]
  then
    printf '\n----------------\n%s\n' "${message}"
  fi

done < <(git log --all --format=%H)