Git command to get ahead-behind status for current branch against _all_ remotes, not just origin

git-mstat

#!/usr/bin/env bash

# Get ahead-behind status for current branch against _all_ remotes
# To use, put this executable script anywhere on your PATH

# TODO make git alias instead of a PATH git-<command> executable

BRANCH=$(git branch --show-current)
# Could override branch with argument but let's keep it simple
# BRANCH=${1-${BRANCH}}

for remote in $(git remote -v | grep fetch | cut -f 1 -); do
  # quietly set remote tracking branch to given remote
  git branch -u ${remote}/${BRANCH} 2>&1 > /dev/null
  # just the ahead-behind info please
  git status | grep 'Your branch is'
  # could show more detail, but still ignore untracked files
  # git status -uno
  # restore remote tracking branch to origin (ASSUMPTION)
  git branch -u origin/${BRANCH} >/dev/null
done

# Sample usage and output
# -----------------------
# $ git mstat
# Your branch is up to date with 'upstream/<current-branch>'.
# Your branch is behind 'collaborator/<current-branch>' by 5 commits.
# Your branch is ahead of 'origin/<current-branch' by 2 commits.