git-alias

#!/bin/bash
# Copyright 2013 Mark Lodato <lodato@google.com>
# Released under the MIT license; see LICENSE for details.

usage() {
  cat >&2 <<EOF
USAGE: git alias [-s|--sort] [name]

Print all aliases whose name starts with the given prefix.
If -s is given, sort by name; otherwise, use the order returned by git-config.
EOF
  exit 1
}

NAME=
SORT=
while [[ $# > 0 ]]; do
  case "$1" in
    -s|--sort)
      SORT=1
      ;;
    -h|--help)
      usage
      ;;
    *)
      if [[ -z $NAME ]]; then
        NAME="$1\$"
      else
        usage
      fi
  esac
  shift
done

git config --get-regexp "^alias\\.$NAME" \
  | ([[ -n $SORT ]] && sort || cat) \
  | sed -e 's/^alias\.\(\S*\) /\1\t/'

exit ${PIPESTATUS[0]}