Finds likely good reviewers for a commit or range of commits by getting a diff, then running `git blame` on the previous versions of each changed hunk. Outputs a sorted list of reviewer names, emails, and how many lines you've both touched. To use, name the file `git-reviewers`, put it somewhere in your $PATH, make it executable, and call it wit…

git-reviewers

#!/usr/bin/env bash -ue

if [[ $# -lt 1 || $# -gt 2 ]]; then
  echo "Usage: git $(basename "$0" | sed 's/^git-//') <end-commit> [<start-commit>]"
  exit 1
fi

diff_range="$1^..$1"
end_commit="$1^"
if [[ $# -eq 2 ]]; then
  diff_range="$2..$1"
  end_commit="$2"
fi

function createBlameParts {
  awk -v commit="$end_commit" '{
    if ($1 == "@@") {
      sub(",", ",+", $2)
      print "git blame --line-porcelain -MCw -L " substr($2,2) " " commit
    }
    else
      print "-- " substr($3,3)
  }'
}

function concatBlameParts {
  awk '{
    if (match($0, /^--/) == 1)
      file=$0
    else
      print $0 " " file
  }'
}

function execBlame {
  while read command; do
    $command | egrep '^author |^author-mail ' | cut -d' ' -f2- | awk '{ if (NR % 2 == 1) o=$0; else print o " " $0 }'
  done
}

git diff --diff-filter=DM "$diff_range" | egrep '^@|^diff' | createBlameParts | concatBlameParts | execBlame | sort | uniq -c | sort -nr

You should turn this into a repo! :)
Automating this install with brew install git-reviewers would be awesome.

https://gist.github.com/alekstorm/4949628?permalink_comment_id=1890013#gistcomment-1890013

You should turn this into a repo! :) Automating this install with brew install git-reviewers would be awesome.