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From: Jeff King <>
To: Stefan Beller <>
Subject: Re: [PATCH 3/7] diff.c: do not pass diff options as keydata to hashmap
Date: Fri, 6 Apr 2018 16:04:43 -0400	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Mon, Apr 02, 2018 at 03:48:50PM -0700, Stefan Beller wrote:

> The diff options are passed to the compare function as
> 'hashmap_cmp_fn_data', which are given when the hashmaps
> are initialized.
> A later patch will make use of the keydata to signal
> different settings for comparision.

I had to scratch my head here for a moment. Don't we use those options
as part of the comparison?

I took the "which" to mean "the compare function", but I think you mean
"we pass these diff options already when the hashmap is initialized".

Maybe something like this would be more clear:

  When we initialize the hashmap, we give it a pointer to the
  diff_options, which it then passes along to each call of the
  hashmap_cmp_fn function. There's no need to pass it a second time as
  the "keydata" parameter, and our comparison functions never look at

  This was a mistake left over from an earlier round of 2e2d5ac184
  (diff.c: color moved lines differently, 2017-06-30), before hashmap
  learned to pass the data pointer for us.

(I'm just guessing on the second paragraph based on a quick look at
git-blame and my recollection from the time).


  reply	other threads:[~2018-04-06 20:04 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-02 22:48 [RFC PATCH 0/7] Moved code detection: ignore space on uniform indentation Stefan Beller
2018-04-02 22:48 ` [PATCH 1/7] xdiff/xdiff.h: remove unused flags Stefan Beller
2018-04-02 22:48 ` [PATCH 2/7] xdiff/xdiffi.c: remove unneeded function declarations Stefan Beller
2018-04-02 22:48 ` [PATCH 3/7] diff.c: do not pass diff options as keydata to hashmap Stefan Beller
2018-04-06 20:04   ` Jeff King [this message]
2018-04-06 20:41     ` Stefan Beller
2018-04-02 22:48 ` [PATCH 4/7] diff.c: adjust hash function signature to match hashmap expectation Stefan Beller
2018-04-02 22:48 ` [PATCH 5/7] diff.c: refactor internal representation for coloring moved code Stefan Beller
2018-04-02 23:51   ` Jonathan Tan
2018-04-03 18:59     ` Stefan Beller
2018-04-06 21:28     ` Stefan Beller
2018-04-06 22:27       ` Jonathan Tan
2018-04-03 19:39   ` Ævar Arnfjörð Bjarmason
2018-04-03 19:49     ` Stefan Beller
2018-04-03 20:44       ` Ævar Arnfjörð Bjarmason
2018-04-03 21:05         ` [PATCH] diff: add a blocks mode for moved code detection Stefan Beller
2018-04-02 22:48 ` [PATCH 6/7] diff.c: decouple white space treatment for move detection from generic option Stefan Beller
2018-04-03  0:31   ` Jonathan Tan
2018-04-02 22:48 ` [PATCH 7/7] diff.c: add --color-moved-ignore-space-delta option Stefan Beller
2018-04-03  0:41   ` Jonathan Tan
2018-04-03 19:22     ` Stefan Beller
2018-04-03 20:38       ` Jonathan Tan
2018-04-02 23:47 ` [RFC PATCH 0/7] Moved code detection: ignore space on uniform indentation Jonathan Tan
2018-04-03  0:03   ` Jacob Keller
2018-04-03 19:00     ` Stefan Beller
2018-04-03 19:55       ` Jacob Keller
  -- strict thread matches above, loose matches on Subject: below --
2018-04-24 21:03 [PATCHv2 " Stefan Beller
2018-04-24 21:03 ` [PATCH 3/7] diff.c: do not pass diff options as keydata to hashmap Stefan Beller

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