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Merge branch 'ew/empty-merge-with-dirty-index-maint' into ew/empty-merge-with-dirty-index

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* ew/empty-merge-with-dirty-index-maint:
  merge-recursive: avoid incorporating uncommitted changes in a merge
  move index_has_changes() from builtin/am.c to merge.c for reuse
  t6044: recursive can silently incorporate dirty changes in a merge
This commit is contained in:
Junio C Hamano
2017-12-22 12:48:38 -08:00
parent 936d1b9894 65170c07d4
commit b6825b5c8e
5 changed files with 70 additions and 42 deletions
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33
merge.c
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@ -1,4 +1,6 @@
#include "cache.h"
#include "diff.h"
#include "diffcore.h"
#include "lockfile.h"
#include "commit.h"
#include "run-command.h"
@ -15,6 +17,37 @@ static const char *merge_argument(struct commit *commit)
return EMPTY_TREE_SHA1_HEX;
}
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)