unixorn/git-extra-commands

#!/usr/bin/env bash
#
# Original source: https://bluz71.github.io/2018/11/26/fuzzy-finding-in-bash-with-fzf.html

set -o pipefail
if [[ -n "$DEBUG" ]]; then
  set -x
fi

fail() {
  printf '%s\n' "$1" >&2  ## Send message to stderr. Exclude >&2 if you don't want it that way.
  exit "${2-1}"  ## Return a code specified by $2 or 1 by default.
}

function has() {
  which "$@" > /dev/null 2>&1
}

git-fzf-log-browser() {
  selections=$(
    git log --graph --format="%C(yellow)%h%C(red)%d%C(reset) - %C(bold green)(%ar)%C(reset) %s %C(blue)<%an>%C(reset)" --color=always "$@" |
      fzf --ansi --no-sort --no-height \
          --preview "echo {} | grep -o '[a-f0-9]\{7\}' | head -1 |
                      xargs -I@ sh -c 'git show --color=always @'"
    )
  if [[ -n "$selections" ]]; then
    commits=$(echo "$selections" | sed 's/^[* |]*//' | cut -d' ' -f1 | tr '\n' ' ')
    # shellcheck disable=SC2086
    git show $commits
  fi
}

if ! has fzf; then
  fail "You need fzf (https://github.com/junegunn/fzf) to use this script. "
fi

# shellcheck disable=SC2068
git-fzf-log-browser $@