git-reopen

#!/bin/bash
#PURPOSE: re-open recently edited files
cdup="$(git rev-parse --show-cdup)"

HEAD="$1"
status=
oldname=

{
	if [ -n "$HEAD" ]; then
		if echo "$HEAD" | grep -q '\.\.'; then
			git log -z --pretty=format: --name-status "$HEAD"
		else
			git log -z --pretty=format: -1 --name-status "$HEAD"
		fi
	elif { git diff --name-status; git diff --cached --name-status; } | grep -q '^[AMR]'; then
		git diff -z --cached --name-status
		git diff -z --name-status
	else
		git log -z --pretty=format: -1 --name-status
	fi
} | while read -d $'\0' part; do 
	if [ -z "$status" ]; then
		status="$part"
		continue
	fi
	if [ -z "$oldname" ]; then
		if [ "$status" = "${status#R}" ]; then
			#status does not begin with "R", so there is only one name
			if [ \
				"$status" != "${status#A}" -o \
				"$status" != "${status#M}" \
			]; then
				#status begins with A or M
				echo "$cdup$part"
			fi
			status=
			continue
		fi
		oldname="$part"
		continue
	fi
	echo "$cdup$part"
	status=
	oldname=
done | sort -u | while read path; do
	"${EDITOR-gvim}" "$path"
done