#!/bin/sh

GIT_DIR=.git
dotest="$GIT_DIR/rebase-apply"

prec=4 &&
this=$(cat 2>/dev/null "$dotest/next") &&
msgnum=$(printf "%0${prec}d" $this) &&
test -f "$dotest/$msgnum" &&
message_id=$(sed -n '
	/^Message-I[Dd]:[ 	]*\(<.*>\)[ 	]*$/{
		s//\1/p
		q
	}
	/^$/q
' "$dotest/$msgnum") &&

test -n "$message_id" &&
head=$(git rev-parse --verify HEAD 2>/dev/null) &&

echo "$head $message_id" >>"$GIT_DIR"/am.log &&
GIT_NOTES_REF=refs/notes/amlog \
	git notes edit -m "Message-Id: $message_id" "$head"