ghist - list recent branches and commits

ghist.sh

#!/usr/bin/env bash
# ghist — pick from the 5 most recently active local branches and check it out.
#
# "Recent" = most recent commit date. Pass a number to change how many
# branches are shown, e.g. `ghist 10`.
#
# Uses fzf: arrows or type-to-filter to pick, Enter to select, Esc to cancel.
set -euo pipefail

count="${1:-5}"

if ! git rev-parse --git-dir >/dev/null 2>&1; then
  echo "ghist: not inside a git repository" >&2
  exit 1
fi

if ! command -v fzf >/dev/null 2>&1; then
  echo "ghist: fzf not found — install it with 'brew install fzf'" >&2
  exit 1
fi

branch="$(
  git for-each-ref --sort=-committerdate --count="$count" \
    --format='%(refname:short)' refs/heads |
    fzf --height="$((count + 4))" --reverse --no-info \
      --prompt='branch> ' \
      --preview 'git log --oneline --color=always -5 {}' \
      --preview-window=right:60%
)" || exit 0

git checkout "$branch"