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From: Jeff King <peff@peff.net>
To: Eric Sunshine <sunshine@sunshineco.com>
Cc: Git Mailing List <git@vger.kernel.org>, Johannes Sixt <j6t@kdbg.org>
Subject: Re: [PATCH 3/3] fsck: mention file path for index errors
Date: Thu, 11 May 2023 12:17:57 -0400	[thread overview]
Message-ID: <20230511161757.GA1973344@coredump.intra.peff.net> (raw)
In-Reply-To: <305ccc55-25e3-6b01-cd86-9a9035839d06@sunshineco.com>

On Thu, May 11, 2023 at 02:39:59AM -0400, Eric Sunshine wrote:

> > Signed-off-by: Jeff King <peff@peff.net>
> > ---
> > diff --git a/builtin/fsck.c b/builtin/fsck.c
> > @@ -795,7 +797,8 @@ static int fsck_resolve_undo(struct index_state *istate)
> > -static void fsck_index(struct index_state *istate)
> > +static void fsck_index(struct index_state *istate, const char *index_path,
> > +		       int is_main_index)
> 
> This adds an `is_main_index` flag, but...
> 
> > @@ -993,12 +998,19 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
> > +			if (read_index_from(&istate, path,
> >   					    get_worktree_git_dir(wt)) > 0)
> > -				fsck_index(&istate);
> > +				fsck_index(&istate, path, wt->is_current);
> 
> ...this accesses `is_current`, the value of which is "true" only for the
> worktree in which the Git command was run, which is not necessarily the main
> worktree. The main worktree, on the other hand, is guaranteed to be the
> first entry returned by get_worktrees(), so shouldn't this instead be:
> 
>     worktrees = get_worktrees();
>     for (p = worktrees; *p; p++) {
>         ...
>         fsck_index(&istate, path, p == worktrees);
>         ...
>     }
>     free_worktrees(worktrees);
> 
> Or am I fundamentally misunderstanding something?

I think "current" is what we want here, since the point was to return
the short-but-syntactically-correct ":path-in-index" for the current
worktree, which is where "rev-parse :path-in-index", etc, would look
when resolving that name.

So the code is working as intended, but I may have misused the term
"main" with respect to other worktree code. I didn't even know that was
a concept, not having dealt much with worktrees.

Maybe it's worth s/main/current/ here (and I guess in t1450)?

-Peff

  reply	other threads:[~2023-05-11 16:18 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-18  9:38 Bug: fsck and repack don't agree when a worktree index extension is "broken" Johannes Sixt
2023-02-24  8:05 ` [PATCH 0/3] fsck index files from all worktrees Jeff King
2023-02-24  8:07   ` [PATCH 1/3] fsck: factor out index fsck Jeff King
2023-02-24  8:09   ` [PATCH 2/3] fsck: check index files in all worktrees Jeff King
2023-02-24  8:45     ` Jeff King
2023-02-24  8:12   ` [PATCH 3/3] fsck: mention file path for index errors Jeff King
2023-05-11  6:39     ` Eric Sunshine
2023-05-11 16:17       ` Jeff King [this message]
2023-05-11 16:28         ` Eric Sunshine
2023-05-11 17:01           ` Jeff King
2023-06-29 18:21             ` Eric Sunshine
2023-06-29 19:37               ` Junio C Hamano
2023-06-01 12:15     ` Andreas Schwab
2023-06-01 14:04       ` Jeff King
2023-02-24 17:30   ` [PATCH 0/3] fsck index files from all worktrees Junio C Hamano
2023-02-26 22:29     ` [PATCH 4/3] fsck: check even zero-entry index files Jeff King
2023-02-27 12:09       ` Derrick Stolee
2023-02-27 15:58       ` Junio C Hamano
2023-02-26 21:49   ` [PATCH 0/3] fsck index files from all worktrees Johannes Sixt

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