List files in git that have historically been changed in the same commit as a given file

git_related

#!/bin/bash
# Usage: `$ git_related path/to/your.file`
ref=$1

git_log_name_status=`git log --full-diff --name-status $ref`
raw_file_list=`echo "$git_log_name_status" | egrep '[AM]\t'`
plain_file_list=''

for file in $raw_file_list
do
  if [ $file == "A" ] || [ $file == "M" ]; then
    continue
  fi
   plain_file_list=$plain_file_list'\n'$file
done

echo -e $plain_file_list | sort | uniq -c | sort -rn | head -n 20