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Merge branch 'jk/patch-ids-no-merges' into maint

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"git log --cherry-pick" used to include merge commits as candidates
to be matched up with other commits, resulting a lot of wasted time.
The patch-id generation logic has been updated to ignore merges to
avoid the wastage.

* jk/patch-ids-no-merges:
  patch-ids: refuse to compute patch-id for merge commit
  patch-ids: turn off rename detection
This commit is contained in:
Junio C Hamano 2016-09-29 16:49:38 -07:00
commit 35ca3e538d
1 changed files with 16 additions and 0 deletions
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16
patch-ids.c
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@ -4,9 +4,18 @@
#include "sha1-lookup.h"
#include "patch-ids.h"
static int patch_id_defined(struct commit *commit)
{
/* must be 0 or 1 parents */
return !commit->parents || !commit->parents->next;
}
int commit_patch_id(struct commit *commit, struct diff_options *options,
unsigned char *sha1, int diff_header_only)
{
if (!patch_id_defined(commit))
return -1;
if (commit->parents)
diff_tree_sha1(commit->parents->item->object.oid.hash,
commit->object.oid.hash, "", options);
@ -45,6 +54,7 @@ int init_patch_ids(struct patch_ids *ids)
{
memset(ids, 0, sizeof(*ids));
diff_setup(&ids->diffopts);
ids->diffopts.detect_rename = 0;
DIFF_OPT_SET(&ids->diffopts, RECURSIVE);
diff_setup_done(&ids->diffopts);
hashmap_init(&ids->patches, (hashmap_cmp_fn)patch_id_cmp, 256);
@ -76,6 +86,9 @@ struct patch_id *has_commit_patch_id(struct commit *commit,
{
struct patch_id patch;
if (!patch_id_defined(commit))
return NULL;
memset(&patch, 0, sizeof(patch));
if (init_patch_id_entry(&patch, commit, ids))
return NULL;
@ -88,6 +101,9 @@ struct patch_id *add_commit_patch_id(struct commit *commit,
{
struct patch_id *key = xcalloc(1, sizeof(*key));
if (!patch_id_defined(commit))
return NULL;
if (init_patch_id_entry(key, commit, ids)) {
free(key);
return NULL;