git/xdiff
Junio C Hamano 73eb40eeaa git-merge-file --ours, --theirs
Sometimes people want their conflicting merges autoresolved by
favouring upstream changes.  The standard answer they are given is
to run "git diff --name-only | xargs git checkout MERGE_HEAD --" in
such a case.  This is to accept automerge results for the paths that
are fully resolved automatically, while taking their version of the
file in full for paths that have conflicts.

This is problematic on two counts.

One is that this is not exactly what these people want.  It discards
all changes they did on their branch for any paths that conflicted.
They usually want to salvage as much automerge result as possible in
a conflicted file, and want to take the upstream change only in the
conflicted part.

This patch teaches two new modes of operation to the lowest-lever
merge machinery, xdl_merge().  Instead of leaving the conflicted
lines from both sides enclosed in <<<, ===, and >>> markers, the
conflicts are resolved favouring our side or their side of changes.

A larger problem is that this tends to encourage a bad workflow by
allowing people to record such a mixed up half-merged result as a
full commit without auditing.  This commit does not tackle this
issue at all.  In git, we usually give long enough rope to users
with strange wishes as long as the risky features are not enabled by
default, and this is such a risky feature.

Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-11-29 23:11:46 -08:00
..
xdiff.h git-merge-file --ours, --theirs 2009-11-29 23:11:46 -08:00
xdiffi.c refactor: use bitsizeof() instead of 8 * sizeof() 2009-07-22 21:57:41 -07:00
xdiffi.h Implement the patience diff algorithm 2009-01-07 13:35:44 -08:00
xemit.c Fix various dead stores found by the clang static analyzer 2009-03-15 18:25:24 -07:00
xemit.h Allow alternate "low-level" emit function from xdl_diff 2008-10-25 12:09:31 -07:00
xinclude.h War on whitespace 2007-06-07 00:04:01 -07:00
xmacros.h War on whitespace 2007-06-07 00:04:01 -07:00
xmerge.c git-merge-file --ours, --theirs 2009-11-29 23:11:46 -08:00
xpatience.c Implement the patience diff algorithm 2009-01-07 13:35:44 -08:00
xprepare.c Implement the patience diff algorithm 2009-01-07 13:35:44 -08:00
xprepare.h War on whitespace 2007-06-07 00:04:01 -07:00
xtypes.h War on whitespace 2007-06-07 00:04:01 -07:00
xutils.c xutils: Fix xdl_recmatch() on incomplete lines 2009-08-23 14:38:43 -07:00
xutils.h War on whitespace 2007-06-07 00:04:01 -07:00