Instead of uniformly returning -1 on any error, this teaches
unpack_trees() to return -2 when the merge itself is Ok but worktree
refuses to get updated.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
unpack-trees.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/unpack-trees.c b/unpack-trees.c
index 0de5a31..cba0aca 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -358,8 +358,13 @@ static int unpack_failed(struct unpack_trees_options *o, const char *message)
return -1;
}
+/*
+ * N-way merge "len" trees. Returns 0 on success, -1 on failure to manipulate the
+ * resulting index, -2 on failure to reflect the changes to the work tree.
+ */
int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options *o)
{
+ int ret;
static struct cache_entry *dfc;
if (len > MAX_UNPACK_TREES)
@@ -404,11 +409,10 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
return unpack_failed(o, "Merge requires file-level merging");
o->src_index = NULL;
- if (check_updates(o))
- return -1;
+ ret = check_updates(o) ? (-2) : 0;
if (o->dst_index)
*o->dst_index = o->result;
- return 0;
+ return ret;
}
/* Here come the merge functions */
--
1.5.6.rc0.43.g823ea
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