git/git-merge-resolve.sh
Fredrik Kuivinen 88f8f0a52b [PATCH] Enable and fix support for base less merges.
Let the merge strategies handle the base less case if they are able to
do it. It also fixes git-resolve.sh to die if no common ancestors
exists, instead of doing the wrong thing. Furthermore, it contains a
small independent fix for git-merge.sh and a fix for a base less code
path in gitMergeCommon.py.

With this it's possible to use
    git merge -s recursive 'merge message' A B
to do a base less merge of A and B.

[jc: Thanks Fredrik for fixing the brown-paper-bag in git-merge.
 I fixed a small typo in git-merge-resolve fix; 'test' equality
 check is spelled with single equal sign -- C-style double equal
 sign is bashism.]

Signed-off-by: Fredrik Kuivinen <freku045@student.liu.se>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-03 00:25:42 -07:00

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#!/bin/sh
#
# Copyright (c) 2005 Linus Torvalds
# Copyright (c) 2005 Junio C Hamano
#
# Resolve two trees, using enhancd multi-base read-tree.
# The first parameters up to -- are merge bases; the rest are heads.
bases= head= remotes= sep_seen=
for arg
do
case ",$sep_seen,$head,$arg," in
*,--,)
sep_seen=yes
;;
,yes,,*)
head=$arg
;;
,yes,*)
remotes="$remotes$arg "
;;
*)
bases="$bases$arg "
;;
esac
done
# Give up if we are given more than two remotes -- not handling octopus.
case "$remotes" in
?*' '?*)
exit 2 ;;
esac
# Give up if this is a baseless merge.
if test '' = "$bases"
then
exit 2
fi
git-update-index --refresh 2>/dev/null
git-read-tree -u -m $bases $head $remotes || exit 2
echo "Trying simple merge."
if result_tree=$(git-write-tree 2>/dev/null)
then
exit 0
else
echo "Simple merge failed, trying Automatic merge."
if git-merge-index -o git-merge-one-file -a
then
exit 0
else
exit 1
fi
fi