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From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
To: "SZEDER Gábor" <szeder.dev@gmail.com>
Cc: Junio C Hamano <gitster@pobox.com>,
	David Turner <novalis@novalis.org>,
	git@vger.kernel.org
Subject: Re: [PATCH 5/5] path.c: don't call the match function without value in trie_find()
Date: Mon, 28 Oct 2019 22:30:17 +0100 (CET)	[thread overview]
Message-ID: <nycvar.QRO.7.76.6.1910282229480.46@tvgsbejvaqbjf.bet> (raw)
In-Reply-To: <20191028120054.GS4348@szeder.dev>

[-- Attachment #1: Type: text/plain, Size: 1532 bytes --]

Hi Gábor,

On Mon, 28 Oct 2019, SZEDER Gábor wrote:

> On Mon, Oct 28, 2019 at 11:57:10AM +0100, Johannes Schindelin wrote:
> > >   - According to the comment describing trie_find(), it should only
> > >     call the given match function 'fn' for a "/-or-\0-terminated
> > >     prefix of the key for which the trie contains a value".  This is
> > >     not true: there are three places where trie_find() calls the match
> > >     function, but one of them is missing the check for value's
> > >     existence.
>
> > Thank you for this entire patch series. Just one nit:
> >
> >
> > > diff --git a/path.c b/path.c
> > > index cf57bd52dd..e21b00c4d4 100644
> > > --- a/path.c
> > > +++ b/path.c
> > > @@ -299,9 +299,13 @@ static int trie_find(struct trie *root, const char *key, match_fn fn,
> > >
> > >  	/* Matched the entire compressed section */
> > >  	key += i;
> > > -	if (!*key)
> > > +	if (!*key) {
> > >  		/* End of key */
> > > -		return fn(key, root->value, baton);
> > > +		if (root->value)
> > > +			return fn(key, root->value, baton);
> > > +		else
> > > +			return -1;
> >
> > I would have preferred this:
> >
> > +		if (!root->value)
> > +			return -1;
> > +		return fn(key, root->value, baton);
> >
> > ... as it would more accurately reflect my mental model of an "early
> > out".
>
> The checks at the other two of those three callsites look like this,
> and I just followed suit for the sake of consistency.

Oh, okay. Sorry for the noise, then.

Thanks,
Dscho

  reply	other threads:[~2019-10-28 21:30 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-16  7:07 [PATCH 0/2] Handle git_path() with lock files correctly in worktrees Johannes Schindelin via GitGitGadget
2019-10-16  7:07 ` [PATCH 1/2] t1400: wrap setup code in test case Johannes Schindelin via GitGitGadget
2019-10-16  7:07 ` [PATCH 2/2] git_path(): handle `.lock` files correctly Johannes Schindelin via GitGitGadget
2019-10-16 11:04   ` SZEDER Gábor
2019-10-17  7:15     ` Junio C Hamano
2019-10-17 22:05     ` Johannes Schindelin
2019-10-18 11:06       ` SZEDER Gábor
2019-10-18 11:35         ` SZEDER Gábor
2019-10-21 16:00           ` [PATCH 0/5] path.c: a couple of common dir/trie fixes SZEDER Gábor
2019-10-21 16:00             ` [PATCH 1/5] Documentation: mention more worktree-specific exceptions SZEDER Gábor
2019-10-21 16:00             ` [PATCH 2/5] path.c: clarify trie_find()'s in-code comment SZEDER Gábor
2019-10-21 16:00             ` [PATCH 3/5] path.c: mark 'logs/HEAD' in 'common_list' as file SZEDER Gábor
2019-10-21 16:00             ` [PATCH 4/5] path.c: clarify two field names in 'struct common_dir' SZEDER Gábor
2019-10-21 16:00             ` [PATCH 5/5] path.c: don't call the match function without value in trie_find() SZEDER Gábor
2019-10-21 17:39               ` David Turner
2019-10-21 20:57               ` SZEDER Gábor
2019-10-23  4:01                 ` Junio C Hamano
2019-10-23 16:20                   ` SZEDER Gábor
2019-10-24  3:29                     ` Junio C Hamano
2019-10-28 10:57               ` Johannes Schindelin
2019-10-28 12:00                 ` SZEDER Gábor
2019-10-28 21:30                   ` Johannes Schindelin [this message]
2019-10-18 11:42         ` [PATCH 0/2] path.c: minor common_list fixes SZEDER Gábor
2019-10-18 11:42           ` [PATCH 1/2] path.c: fix field name in 'struct common_dir' SZEDER Gábor
2019-10-18 11:42           ` [PATCH 2/2] path.c: mark 'logs/HEAD' in 'common_list' as file SZEDER Gábor
2019-10-21 19:35           ` [PATCH 0/2] path.c: minor common_list fixes Johannes Schindelin
2019-10-17 22:07 ` [PATCH v2 0/2] Handle git_path() with lock files correctly in worktrees Johannes Schindelin via GitGitGadget
2019-10-17 22:07   ` [PATCH v2 1/2] t1400: wrap setup code in test case Johannes Schindelin via GitGitGadget
2019-10-17 22:07   ` [PATCH v2 2/2] git_path(): handle `.lock` files correctly Johannes Schindelin via GitGitGadget
2019-10-18  1:23     ` Junio C Hamano
2019-10-18 12:35       ` SZEDER Gábor
2019-10-21 20:26       ` Johannes Schindelin
2019-10-23  2:12         ` Junio C Hamano
2019-10-21 21:54   ` [PATCH v3 0/2] Handle git_path() with lock files correctly in worktrees Johannes Schindelin via GitGitGadget
2019-10-21 21:54     ` [PATCH v3 1/2] t1400: wrap setup code in test case Johannes Schindelin via GitGitGadget
2019-10-21 21:54     ` [PATCH v3 2/2] git_path(): handle `.lock` files correctly Johannes Schindelin via GitGitGadget
2019-10-22 16:01       ` SZEDER Gábor
2019-10-23  3:38         ` Junio C Hamano
2019-10-28 12:01         ` Johannes Schindelin
2019-10-28 12:32           ` SZEDER Gábor
2019-10-28 17:30           ` Junio C Hamano
2019-10-28 12:57     ` [PATCH v4 0/2] Handle git_path() with lock files correctly in worktrees Johannes Schindelin via GitGitGadget
2019-10-28 12:57       ` [PATCH v4 1/2] t1400: wrap setup code in test case Johannes Schindelin via GitGitGadget
2019-10-28 12:57       ` [PATCH v4 2/2] git_path(): handle `.lock` files correctly Johannes Schindelin via GitGitGadget
2019-10-29  3:39       ` [PATCH v4 0/2] Handle git_path() with lock files correctly in worktrees Junio C Hamano

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