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Merge branch 'bp/merge-rename-config'

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With merge.renames configuration set to false, the recursive merge
strategy can be told not to spend cycles trying to find renamed
paths and merge them accordingly.

* bp/merge-rename-config:
  merge: pass aggressive when rename detection is turned off
  merge: add merge.renames config setting
  merge: update documentation for {merge,diff}.renameLimit
This commit is contained in:
Junio C Hamano
2018-05-30 14:04:04 +09:00
parent c5aa4bccb5 6f10a09e0a
commit 6e2ba77bda
8 changed files with 69 additions and 14 deletions
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31
merge-recursive.c
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@ -356,6 +356,7 @@ static int git_merge_trees(struct merge_options *o,
o->unpack_opts.fn = threeway_merge;
o->unpack_opts.src_index = &the_index;
o->unpack_opts.dst_index = &tmp_index;
o->unpack_opts.aggressive = !merge_detect_rename(o);
setup_unpack_trees_porcelain(&o->unpack_opts, "merge");
init_tree_desc_from_tree(t+0, common);
@ -1603,7 +1604,15 @@ static struct diff_queue_struct *get_diffpairs(struct merge_options *o,
diff_setup(&opts);
opts.flags.recursive = 1;
opts.flags.rename_empty = 0;
opts.detect_rename = DIFF_DETECT_RENAME;
opts.detect_rename = merge_detect_rename(o);
/*
* We do not have logic to handle the detection of copies. In
* fact, it may not even make sense to add such logic: would we
* really want a change to a base file to be propagated through
* multiple other files by a merge?
*/
if (opts.detect_rename > DIFF_DETECT_RENAME)
opts.detect_rename = DIFF_DETECT_RENAME;
opts.rename_limit = o->merge_rename_limit >= 0 ? o->merge_rename_limit :
o->diff_rename_limit >= 0 ? o->diff_rename_limit :
1000;
@ -2643,7 +2652,7 @@ static int handle_renames(struct merge_options *o,
ri->head_renames = NULL;
ri->merge_renames = NULL;
if (!o->detect_rename)
if (!merge_detect_rename(o))
return 1;
head_pairs = get_diffpairs(o, common, head);
@ -3325,9 +3334,18 @@ int merge_recursive_generic(struct merge_options *o,
static void merge_recursive_config(struct merge_options *o)
{
char *value = NULL;
git_config_get_int("merge.verbosity", &o->verbosity);
git_config_get_int("diff.renamelimit", &o->diff_rename_limit);
git_config_get_int("merge.renamelimit", &o->merge_rename_limit);
if (!git_config_get_string("diff.renames", &value)) {
o->diff_detect_rename = git_config_rename("diff.renames", value);
free(value);
}
if (!git_config_get_string("merge.renames", &value)) {
o->merge_detect_rename = git_config_rename("merge.renames", value);
free(value);
}
git_config(git_xmerge_config, NULL);
}
@ -3340,7 +3358,8 @@ void init_merge_options(struct merge_options *o)
o->diff_rename_limit = -1;
o->merge_rename_limit = -1;
o->renormalize = 0;
o->detect_rename = 1;
o->diff_detect_rename = -1;
o->merge_detect_rename = -1;
merge_recursive_config(o);
merge_verbosity = getenv("GIT_MERGE_VERBOSITY");
if (merge_verbosity)
@ -3391,16 +3410,16 @@ int parse_merge_opt(struct merge_options *o, const char *s)
else if (!strcmp(s, "no-renormalize"))
o->renormalize = 0;
else if (!strcmp(s, "no-renames"))
o->detect_rename = 0;
o->merge_detect_rename = 0;
else if (!strcmp(s, "find-renames")) {
o->detect_rename = 1;
o->merge_detect_rename = 1;
o->rename_score = 0;
}
else if (skip_prefix(s, "find-renames=", &arg) ||
skip_prefix(s, "rename-threshold=", &arg)) {
if ((o->rename_score = parse_rename_score(&arg)) == -1 || *arg != 0)
return -1;
o->detect_rename = 1;
o->merge_detect_rename = 1;
}
else
return -1;