git-log-scripton commit git-log: make sure we have some commit to start from. (b134922)
   1#!/bin/sh
   2. git-sh-setup-script || die "Not a git archive"
   3revs=$(git-rev-parse --revs-only --default HEAD "$@")
   4[ "$revs" ] || die "No HEAD ref"
   5git-rev-list --pretty $(git-rev-parse --default HEAD "$@") | LESS=-S ${PAGER:-less}