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From: Jeff King <peff@peff.net>
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org, "Eric Sunshine" <sunshine@sunshineco.com>,
	"Martin Ågren" <martin.agren@gmail.com>
Subject: Re: [PATCH v2 8/8] shortlog: allow multiple groups to be specified
Date: Sun, 27 Sep 2020 23:25:15 -0400	[thread overview]
Message-ID: <20200928032515.GC3059492@coredump.intra.peff.net> (raw)
In-Reply-To: <xmqq8scuor59.fsf@gitster.c.googlers.com>

On Sun, Sep 27, 2020 at 02:18:10PM -0700, Junio C Hamano wrote:

> Jeff King <peff@peff.net> writes:
> 
> > -		if (strcasecmp(iter.key.buf, log->trailer))
> > +		if (!string_list_has_string(&log->trailers, iter.key.buf))
> >  			continue;
> ...
> > +	if (!log.groups)
> > +		log.groups = SHORTLOG_GROUP_AUTHOR;
> > +	string_list_sort(&log.trailers);
> 
> I initially reacted with "oh, why sort?" to this line, before
> realizing that the list is used as a look-up table, which, if I
> recall correctly, you said you want to see us move off of in the
> longer term.
> 
> As we already have the string-set in this series, I am wondering
> why we are not using it.  It's not like the code at some point
> needs to iterate over log.trailers in some stable order, right?

Right, it's purely a lookup, and the new strset or any hashmap would
work.  However, the trailers list is part of the public shortlog.h[1]
interface, so we'd have to move strset to be a public thing, too. I
think that may be where we want to go eventually, but I thought I'd
trial it as something strictly internal to shortlog.c for now.

I'm also not _too_ bothered by this particular use of string-list as a
lookup table. It's one of the "easy" cases: we build up the list in one
phase, and then do lookups in the other, so sorting in between is no big
deal (though I do think a strset is even easier, as you do not have to
remember to sort between the phases).

-Peff

  reply	other threads:[~2020-09-28  3:25 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-25  7:01 [PATCH 0/8] parsing trailers with shortlog Jeff King
2020-09-25  7:01 ` [PATCH 1/8] shortlog: change "author" variables to "ident" Jeff King
2020-09-25  7:02 ` [PATCH 2/8] shortlog: refactor committer/author grouping Jeff King
2020-09-25 20:05   ` Eric Sunshine
2020-09-27  8:03     ` Jeff King
2020-09-27  8:08       ` Jeff King
2020-09-27  8:23         ` Eric Sunshine
2020-09-26 12:31   ` Martin Ågren
2020-09-27  7:59     ` Jeff King
2020-09-25  7:02 ` [PATCH 3/8] trailer: add interface for iterating over commit trailers Jeff King
2020-09-26 12:39   ` Martin Ågren
2020-09-27  8:20     ` Jeff King
2020-09-25  7:03 ` [PATCH 4/8] shortlog: match commit trailers with --group Jeff King
2020-09-25  7:05 ` [PATCH 5/8] shortlog: de-duplicate trailer values Jeff King
2020-09-25  7:05 ` [PATCH 6/8] shortlog: rename parse_stdin_ident() Jeff King
2020-09-25  7:05 ` [PATCH 7/8] shortlog: parse trailer idents Jeff King
2020-09-25  7:05 ` [PATCH 8/8] shortlog: allow multiple groups to be specified Jeff King
2020-09-25 20:23   ` Eric Sunshine
2020-09-27  8:06     ` Jeff King
2020-09-26 12:48   ` Martin Ågren
2020-09-27  8:25     ` Jeff King
2020-09-25 14:27 ` [PATCH 0/8] parsing trailers with shortlog Derrick Stolee
2020-09-25 16:57 ` Junio C Hamano
2020-09-27  8:39 ` [PATCH v2 " Jeff King
2020-09-27  8:39   ` [PATCH v2 1/8] shortlog: change "author" variables to "ident" Jeff King
2020-09-27 19:18     ` Junio C Hamano
2020-09-27  8:39   ` [PATCH v2 2/8] shortlog: add grouping option Jeff King
2020-09-27  8:40   ` [PATCH v2 3/8] trailer: add interface for iterating over commit trailers Jeff King
2020-09-27  8:40   ` [PATCH v2 4/8] shortlog: match commit trailers with --group Jeff King
2020-09-27 19:51     ` Junio C Hamano
2020-09-28  3:17       ` Jeff King
2020-09-28 17:01         ` Junio C Hamano
2020-09-27  8:40   ` [PATCH v2 5/8] shortlog: de-duplicate trailer values Jeff King
2020-09-27 20:23     ` Junio C Hamano
2020-09-28  3:19       ` Jeff King
2020-09-27  8:40   ` [PATCH v2 6/8] shortlog: rename parse_stdin_ident() Jeff King
2020-09-27  8:40   ` [PATCH v2 7/8] shortlog: parse trailer idents Jeff King
2020-09-27 20:49     ` Junio C Hamano
2020-09-27  8:40   ` [PATCH v2 8/8] shortlog: allow multiple groups to be specified Jeff King
2020-09-27 21:18     ` Junio C Hamano
2020-09-28  3:25       ` Jeff King [this message]
2020-12-28 11:29     ` Junio C Hamano
2021-02-04  6:44       ` Junio C Hamano
2020-09-27 14:38   ` [PATCH v2 0/8] parsing trailers with shortlog Martin Ågren

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