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From: Junio C Hamano <>
To: Elijah Newren <>
Cc: Ævar Arnfjörð Bjarmason <>,
	Git Mailing List <>
Subject: Re: Fwd: Opinions on changing add/add conflict resolution?
Date: Tue, 13 Mar 2018 15:12:14 -0700
Message-ID: <> (raw)
In-Reply-To: <>

Elijah Newren <> writes:

> As currently implemented, yes.  However, I was more concerned the idea
> of handling files differently based on whether or not they were
> similar, rather than on what the precise definition of "similar" is
> for this context.
> As far as the definition of similarity goes, estimate_similarity() is
> currently used by rename detection to compare files recorded at
> different pathnames.  By contrast, in this context, we are comparing
> two files which were recorded with the same pathname.  That suggests
> the heuristic could be a bit different and use more than just
> estimate_similarity().  (e.g. "We consider these files similar IF more
> than 50% of the lines match OR both files are less than 2K.")

Yeah, I think there is similar difference between similarity score
that is used by diffcore-rename and dissimilarity score that is used
by diffcore-break exactly for that reason.  If you start from a
100-line original file and grow it to 100-line one by adding 900
lines, as long as you kept the original 100 lines, it is easier to
view the change within the same path as a continued development,
instead of saying they are so dissimilar.

In any case, I think the way the stage #2 and stage #3 (i.e. ours
and theirs) contents are externalized during a conflicted mergy
operation should be consistent across edit/edit and add/add
conflict, so if we are adding a new way to write out extra temporary
files out of these higher stage index entries, it should be made
applicable not only to add/add conflict (i.e. there shounld't be a
code that says "oh, let's see, this lacks stage #1, so do this
different thing").

Personally, I think it is best to leave it all outside of the core
and make "git mergetool" to be responsible for the job of
externalizing higher stage index entries to temporary working tree
files.  They already need to do so in order to work with external
tools that do not read directly from our index file anyway, no?

  reply index

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-12 18:32 Elijah Newren
2018-03-12 18:47 ` Jonathan Nieder
2018-03-12 21:26   ` Elijah Newren
2018-03-12 21:35     ` Jonathan Nieder
2018-03-12 23:08       ` Hilco Wijbenga
2018-03-12 23:14         ` Jonathan Nieder
2018-03-13  0:38       ` Elijah Newren
2018-03-13 17:22         ` Elijah Newren
2018-03-13  5:30     ` Junio C Hamano
2018-03-13 18:21       ` Elijah Newren
2018-03-13 22:26         ` Junio C Hamano
2018-03-13 22:42           ` Elijah Newren
2018-03-13 22:52             ` Junio C Hamano
2018-03-13 23:04               ` Elijah Newren
2018-03-13 22:56             ` Jonathan Nieder
2018-03-13 23:14               ` Elijah Newren
2018-03-13 23:30                 ` Junio C Hamano
2018-03-12 22:19 ` Ævar Arnfjörð Bjarmason
     [not found]   ` <>
2018-03-13  2:53     ` Fwd: " Elijah Newren
2018-03-13 22:12       ` Junio C Hamano [this message]
2018-03-13  9:59     ` Ævar Arnfjörð Bjarmason
2018-03-13 17:09       ` Elijah Newren

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