git/list[1] front-page[2] threads[3] people[4] search[5] about
 

Re: [PATCH 2/2] merge-recursive: preserve skip_worktree bit when necessary

From
Ben Peart <peartben@gmail.com>
Date
Jul 23, 2018, 14:14 UTC
Message-ID
<75aa297e-4857-d92a-7041-618ff3b0b77a@gmail.com>
In-Reply-To
<20180721063428.20518-3-newren@gmail.com>
<snip>
Show 25 quoted lines
>   merge-recursive.c               | 16 ++++++++++++++++
>   t/t3507-cherry-pick-conflict.sh |  2 +-
>   2 files changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/merge-recursive.c b/merge-recursive.c
> index 113c1d696..fd74bca17 100644
> --- a/merge-recursive.c
> +++ b/merge-recursive.c
> @@ -3069,10 +3069,26 @@ static int merge_content(struct merge_options *o,
>   	if (mfi.clean &&
>   	    was_tracked_and_matches(o, path, &mfi.oid, mfi.mode) &&
>   	    !df_conflict_remains) {
> +		int pos;
> +		struct cache_entry *ce;
> +
>   		output(o, 3, _("Skipped %s (merged same as existing)"), path);
>   		if (add_cacheinfo(o, mfi.mode, &mfi.oid, path,
>   				  0, (!o->call_depth && !is_dirty), 0))
>   			return -1;
> +		/*
> +		 * However, add_cacheinfo() will delete the old cache entry
> +		 * and add a new one.  We need to copy over any skip_worktree
> +		 * flag to avoid making the file appear as if it were
> +		 * deleted by the user.
> +		 */

nit - I find it a little odd to start a comment with "However" as if you are continuing a conversation.

Show 24 quoted lines
> +		pos = index_name_pos(&o->orig_index, path, strlen(path));
> +		ce = o->orig_index.cache[pos];
> +		if (ce_skip_worktree(ce)) {
> +			pos = index_name_pos(&the_index, path, strlen(path));
> +			ce = the_index.cache[pos];
> +			ce->ce_flags |= CE_SKIP_WORKTREE;
> +		}
>   		return mfi.clean;
>   	}
>   
> diff --git a/t/t3507-cherry-pick-conflict.sh b/t/t3507-cherry-pick-conflict.sh
> index 25fac490d..9b1456a7c 100755
> --- a/t/t3507-cherry-pick-conflict.sh
> +++ b/t/t3507-cherry-pick-conflict.sh
> @@ -392,7 +392,7 @@ test_expect_success 'commit --amend -s places the sign-off at the right place' '
>   	test_cmp expect actual
>   '
>   
> -test_expect_failure 'failed cherry-pick with sparse-checkout' '
> +test_expect_success 'failed cherry-pick with sparse-checkout' '
>          pristine_detach initial &&
>          git config core.sparseCheckout true &&
>          echo /unrelated >.git/info/sparse-checkout &&
> 

Thanks Elijah, I can verify this fixes the problem with the preferred solution (ie it preserves the skip-worktree bit). As such, this is:

Reviewed-by: Ben Peart <benpeart@microsoft.com>

That said, I would propose the test be updated to include a specific test for the skip-worktree bit so that if a future patch reverts to the old behavior of clearing the skip-worktree bit and writing out the file to the working directory, we do it explicitly instead of by accident.

diff --git a/t/t3507-cherry-pick-conflict.sh 
b/t/t3507-cherry-pick-conflict.sh
index 9b1456a7c3..bc8863ff36 100755
--- a/t/t3507-cherry-pick-conflict.sh
+++ b/t/t3507-cherry-pick-conflict.sh
@@ -392,17 +392,17 @@ test_expect_success 'commit --amend -s places the 
sign-off at the right place' '

         test_cmp expect actual
  '

-test_expect_success 'failed cherry-pick with sparse-checkout' '
+test_expect_success 'cherry-pick preserves sparse-checkout' '
         pristine_detach initial &&
         git config core.sparseCheckout true &&
         echo /unrelated >.git/info/sparse-checkout &&
         git read-tree --reset -u HEAD &&
         test_must_fail git cherry-pick -Xours picked>actual &&
+       test "$(git ls-files -t foo)" = "S foo" &&
         test_i18ngrep ! "Changes not staged for commit:" actual &&
         echo "/*" >.git/info/sparse-checkout &&
         git read-tree --reset -u HEAD &&
         git config core.sparseCheckout false &&
         rm .git/info/sparse-checkout
  '

  test_done
Previous: Elijah NewrenNext: Ben Peart
Message 17 of 22 in “[BUG] merge-recursive overly aggressive when skipping updating the working tree”
  1. Ben PeartJul 20, 2018
  2. Elijah NewrenJul 20, 2018
  3. Junio C HamanoJul 20, 2018
  4. Elijah NewrenJul 20, 2018
  5. Junio C HamanoJul 20, 2018
  6. Elijah NewrenJul 20, 2018
  7. Ben PeartJul 23, 2018
  8. 0/2 Preserve skip_worktree bit in merges when necessaryElijah Newren, Jul 21, 2018
  9. 1/2 t3507: add a testcase showing failure with sparse checkoutElijah Newren, Jul 21, 2018
  10. Eric SunshineJul 21, 2018
  11. Ben PeartJul 23, 2018
  12. Eric SunshineJul 23, 2018
  13. Ben PeartJul 23, 2018
  14. Ben PeartJul 21, 2018
  15. Junio C HamanoJul 23, 2018
  16. 2/2 merge-recursive: preserve skip_worktree bit when necessaryElijah Newren, Jul 21, 2018
  17. Ben PeartJul 23, 2018
  18. 0/2 Preserve skip_worktree bit in merges when necessaryBen Peart, Jul 27, 2018
  19. 1/2 t3507: add a testcase showing failure with sparse checkoutBen Peart, Jul 27, 2018
  20. 2/2 merge-recursive: preserve skip_worktree bit when necessaryBen Peart, Jul 27, 2018
  21. Junio C HamanoJul 27, 2018
  22. Elijah NewrenJul 31, 2018

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.