engored@20: #!/bin/sh
engored@20: 
engored@20: HGTMP=""
engored@20: cleanup_exit() {
engored@20:     rm -rf "$HGTMP"
engored@20: }
engored@20: 
engored@20: # Remove temporary files even if we get interrupted
engored@20: trap "cleanup_exit" 0 # normal exit
engored@20: trap "exit 255" HUP INT QUIT ABRT TERM
engored@20: 
av6@140: HGTMP=$(mktemp -d "${TMPDIR-/tmp}/hgeditor.XXXXXX")
av6@140: if [ -z "$HGTMP" ] || ! [ -d "$HGTMP" ]; then
av6@140:     echo "Could not create temporary directory! Exiting." 1>&2
av6@140:     exit 1
av6@140: fi
engored@20: 
av6@141: LINE=$(fgrep 'HG: --- 8< ---' -nm1 "$1" | cut -d: -f1)
av6@141: if [ -n "$LINE" ]; then
av6@141:     head -n "$(( LINE - 1 ))" "$1" > "$HGTMP/msg"
av6@141:     tail -n +"$(( LINE + 1 ))" "$1" | sed -e 's/^HG: //g' > "$HGTMP/diff"
av6@141: else
av6@141:     cat "$1" > "$HGTMP/msg"
av6@141: fi
engored@20: 
engored@20: MD5=$(which md5sum 2>/dev/null) || \
engored@20:     MD5=$(which md5 2>/dev/null)
av6@140: [ -x "${MD5}" ] && CHECKSUM=$(${MD5} "$HGTMP/msg")
engored@20: if [ -s "$HGTMP/diff" ]; then
av6@120:     vim -f "+e $HGTMP/diff" '+set buftype=help filetype=diff' "+vsplit $HGTMP/msg" '+setlocal spell' || exit $?
engored@20: else
av6@120:     vim -f "$HGTMP/msg" '+setlocal spell' || exit $?
engored@20: fi
engored@20: [ -x "${MD5}" ] && (echo "$CHECKSUM" | ${MD5} -c >/dev/null 2>&1 && exit 13)
engored@20: 
engored@20: mv "$HGTMP/msg" "$1"
engored@20: 
engored@20: exit $?