Hi,

On Tue, Oct 1, 2019 at 3:06 PM Matheus Tavares Bernardino
[off-list ref] wrote:

Hi,

During Git Summit it was mentioned that git-grep searches outside
sparsity pattern which is not aligned with user expectation. I took a
quick look at it and it seems the reason is
builtin/grep.c:grep_cache() (which also greps worktree) will grep the
object store when a given index entry has the CE_SKIP_WORKTREE bit
turned on.

I also had once this problem and found that out and wrote a patch. I
was just about to send this patch out.

Btw, ls-files should also learn to skip worktree files.

Stay tuned.

Bert

From what I understand, this bit is used exactly for sparse checkouts
(as described in Documentation/technical/index-format.txt[1]). But
should we perhaps ignore it in git-grep to have the expected behavior?
I'll be happy to send the patch if so, but I wanted to check with you
first.

Grepping with --cached or in given trees objects would still grep
outside the cone, but that is what one would expect, right? Or should
we filter out what is outside of the cone for cached grep as well?

Thanks,
Matheus

[1]: https://github.com/git/git/blob/master/Documentation/technical/index-format.txt#L101