#!/usr/bin/env bash
# A simple script for opening merge conflicts in the editor.
# Use the following Mercurial settings to enable it.
#
# [ui]
# merge = editmerge
#
# [merge-tools]
# editmerge.args=$output
# editmerge.check=changed
# editmerge.premerge=keep
FILE=$1
getlines() {
grep -n "<<<<<<" $FILE | cut -f1 -d:
}
# editor preference loosely based on https://mercurial-scm.org/wiki/editor
# hg showconfig is at the bottom though, since it's slow to run (0.15 seconds)
ED=$HGEDITOR
if [ "$ED" = "" ] ; then
ED=$VISUAL
fi
if [ "$ED" = "" ] ; then
ED=$EDITOR
fi
if [ "$ED" = "" ] ; then
ED=$(hg showconfig ui.editor)
fi
if [ "$ED" = "" ] ; then
echo "merge failed - unable to find editor"
exit 1
fi
if [ "$ED" = "emacs" ] || [ "$ED" = "nano" ] || [ "$ED" = "vim" ] ; then
FIRSTLINE=$(getlines | head -n 1)
PREVIOUSLINE=""
# open the editor to the first conflict until there are no more
# or the user stops editing the file
while [ ! "$FIRSTLINE" = "" ] && [ ! "$FIRSTLINE" = "$PREVIOUSLINE" ] ; do
$ED +$FIRSTLINE $FILE
PREVIOUSLINE=$FIRSTLINE
FIRSTLINE=$(getlines | head -n 1)
done
else
$ED $FILE
fi
# get the line numbers of the remaining conflicts
CONFLICTS=$(getlines | sed ':a;N;$!ba;s/\n/, /g')
if [ ! "$CONFLICTS" = "" ] ; then
echo "merge failed - resolve the conflicts (line $CONFLICTS) then use 'hg resolve --mark'"
exit 1
fi
exit 0