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range-diff: allow to diff files regardless of submodule config

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If we have `submodule.diff = log' in the configuration file
or `--submodule=log' is given as argument, range-diff fails
to compare both diffs and we only get the following output:

    Submodule a 0000000...0000000 (new submodule)

Even if the repository doesn't have any submodule.

That's because the mode in diff_filespec is not correct and when
flushing the diff, down in builtin_diff() we will enter the condition:

	if (o->submodule_format == DIFF_SUBMODULE_LOG &&
	    (!one->mode || S_ISGITLINK(one->mode)) &&
	    (!two->mode || S_ISGITLINK(two->mode))) {
		show_submodule_summary(o, one->path ? one->path : two->path,
				&one->oid, &two->oid,
				two->dirty_submodule);
		return;

It turns out that S_ISGITLINK will return true (mode == 0160000 here).
Similar thing happens if submodule.diff is "diff".

Do like it's done in grep.c when calling fill_filespec() and force it to
be recognized as a file by adding S_IFREG to the mode.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Lucas De Marchi
2018-10-24 12:46:17 -07:00
committed by Junio C Hamano
parent 5a0cc8aca7
commit 0e573e8fcc
2 changed files with 30 additions and 1 deletions
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2
range-diff.c
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@ -354,7 +354,7 @@ static struct diff_filespec *get_filespec(const char *name, const char *p)
{
struct diff_filespec *spec = alloc_filespec(name);
fill_filespec(spec, &null_oid, 0, 0644);
fill_filespec(spec, &null_oid, 0, 0100644);
spec->data = (char *)p;
spec->size = strlen(p);
spec->should_munmap = 0;