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From: Phillip Wood <phillip.wood123@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: "brian m. carlson" <sandals@crustytoothpaste.net>,
	phillip.wood@dunelm.org.uk, git@vger.kernel.org,
	"SZEDER Gábor" <szeder.dev@gmail.com>,
	"Taylor Blau" <me@ttaylorr.com>, "Jeff King" <peff@peff.net>
Subject: Re: [PATCH v4 2/2] apply: reload .gitattributes after patching it
Date: Mon, 26 Aug 2019 16:09:20 +0100
Message-ID: <e8196c6e-7f3c-1b29-73ba-40094f1e0280@gmail.com> (raw)
In-Reply-To: <d59de3db-13e6-35d5-2cb1-b38dc8854c60@gmail.com>

On 20/08/2019 19:32, Phillip Wood wrote:
> On 20/08/2019 19:24, Junio C Hamano wrote:
>> Phillip Wood <phillip.wood123@gmail.com> writes:
>>
>>>>> Do you know why -m and -i aren't affected?
>>>>
>>>> I had to look, but I believe the answer is because they use the
>>>> sequencer, and the sequencer calls git merge-recursive as a separate
>>>> process, and so the writing of the tree is only done in a subprocess,
>>>> which can't persist state.
>>>
>>> The sequencer has been running in a single process for a while now. We
>>> do fork for 'git merge' sometimes when processing 'merge' commands but
>>> 'pick' commands are all done in a single process by calling
>>> do_recursive_merge().
>>>
>>> Best Wishes
>>>
>>> Phillip
>>>
>>>> Should we move the merge-recursive code into the main process, we'll
>>>> likely have the same problem there.
>>
>> So we actually have the same issue already?
> 
> I don't think so, I modified Brian's test to call 'rebase -i' and it 
> passes but no one seems to know why.

I spent some time digging into this and the attributes are reloaded 
before each pick. This is because check_updates() called by 
unpack_trees() calls git_attr_set_direction(GIT_ATTR_CHECKOUT) at the 
start of the function and git_attr_set_direction(GIT_ATTR_CHECKIN) at 
the end of the function. This has the effect of dropping all loaded 
attributes as git_attr_set_direction() calls drop_all_attr_stacks() when 
the direction is changed.

Best Wishes

Phillip

> Best Wishes
> 
> Phillip

  reply index

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-09 10:02 [PATCH] " brian m. carlson
2019-08-09 11:14 ` Taylor Blau
2019-08-09 11:25   ` brian m. carlson
2019-08-09 11:36     ` Jeff King
2019-08-09 11:47       ` brian m. carlson
2019-08-09 12:43       ` SZEDER Gábor
2019-08-09 13:51         ` Jeff King
2019-08-09 22:08           ` brian m. carlson
2019-08-11 17:47 ` [PATCH v2 0/2] Honor .gitattributes with rebase --am brian m. carlson
2019-08-11 17:47   ` [PATCH v2 1/2] path: add a function to check for path suffix brian m. carlson
2019-08-12  0:32     ` Junio C Hamano
2019-08-12  1:10       ` brian m. carlson
2019-08-12  4:36         ` SZEDER Gábor
2019-08-12 16:49         ` Junio C Hamano
2019-08-12 22:40           ` brian m. carlson
2019-08-13  1:13             ` Jeff King
2019-08-13 16:40             ` Junio C Hamano
2019-08-13  6:36           ` SZEDER Gábor
2019-08-13 16:42             ` Junio C Hamano
2019-08-11 17:47   ` [PATCH v2 2/2] apply: reload .gitattributes after patching it brian m. carlson
2019-08-13  2:43 ` [PATCH v3 0/2] Honor .gitattributes with rebase --am brian m. carlson
2019-08-13  2:43   ` [PATCH v3 1/2] path: add a function to check for path suffix brian m. carlson
2019-08-13  2:43   ` [PATCH v3 2/2] apply: reload .gitattributes after patching it brian m. carlson
2019-08-13 18:08     ` Junio C Hamano
2019-08-15 22:10       ` Junio C Hamano
2019-08-16  0:22         ` brian m. carlson
2019-08-13 22:37     ` Junio C Hamano
2019-08-13 22:48       ` brian m. carlson
2019-08-18 18:44 ` [PATCH v4 0/2] Honor .gitattributes with rebase --am brian m. carlson
2019-08-18 18:44   ` [PATCH v4 1/2] path: add a function to check for path suffix brian m. carlson
2019-08-18 18:44   ` [PATCH v4 2/2] apply: reload .gitattributes after patching it brian m. carlson
2019-08-19  9:41     ` Phillip Wood
2019-08-19  9:55       ` Phillip Wood
2019-08-20  3:05         ` brian m. carlson
2019-08-20  8:56           ` Phillip Wood
2019-08-20  2:45       ` brian m. carlson
2019-08-20  8:52         ` Phillip Wood
2019-08-20 18:24           ` Junio C Hamano
2019-08-20 18:32             ` Phillip Wood
2019-08-26 15:09               ` Phillip Wood [this message]
2019-08-26 16:41                 ` Junio C Hamano

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