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Merge branch 'en/dirty-merge-fixes'

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The recursive merge strategy did not properly ensure there was no
change between HEAD and the index before performing its operation,
which has been corrected.

* en/dirty-merge-fixes:
  merge: fix misleading pre-merge check documentation
  merge-recursive: enforce rule that index matches head before merging
  t6044: add more testcases with staged changes before a merge is invoked
  merge-recursive: fix assumption that head tree being merged is HEAD
  merge-recursive: make sure when we say we abort that we actually abort
  t6044: add a testcase for index matching head, when head doesn't match HEAD
  t6044: verify that merges expected to abort actually abort
  index_has_changes(): avoid assuming operating on the_index
  read-cache.c: move index_has_changes() from merge.c
This commit is contained in:
Junio C Hamano
2018-08-02 15:30:44 -07:00
parent 2b9afea372 55f39cf755
commit c18ac30e9e
9 changed files with 123 additions and 178 deletions
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31
merge.c
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@ -14,37 +14,6 @@ static const char *merge_argument(struct commit *commit)
return oid_to_hex(commit ? &commit->object.oid : the_hash_algo->empty_tree);
}
int index_has_changes(struct strbuf *sb)
{
struct object_id head;
int i;
if (!get_oid_tree("HEAD", &head)) {
struct diff_options opt;
diff_setup(&opt);
opt.flags.exit_with_status = 1;
if (!sb)
opt.flags.quick = 1;
do_diff_cache(&head, &opt);
diffcore_std(&opt);
for (i = 0; sb && i < diff_queued_diff.nr; i++) {
if (i)
strbuf_addch(sb, ' ');
strbuf_addstr(sb, diff_queued_diff.queue[i]->two->path);
}
diff_flush(&opt);
return opt.flags.has_changes != 0;
} else {
for (i = 0; sb && i < active_nr; i++) {
if (i)
strbuf_addch(sb, ' ');
strbuf_addstr(sb, active_cache[i]->name);
}
return !!active_nr;
}
}
int try_merge_command(const char *strategy, size_t xopts_nr,
const char **xopts, struct commit_list *common,
const char *head_arg, struct commit_list *remotes)