[PATCH 0 of 2] Better support for diffing individual changesets.
Patrick Mézard
pmezard at gmail.com
Thu Oct 9 14:07:55 CDT 2008
Matt Mackall a écrit :
> On Wed, 2008-10-08 at 21:59 +0200, Sune Foldager wrote:
>> Hi Matt,
>>
>> On 08/10/2008, at 20.13, Matt Mackall wrote:
>>
>>> On Wed, 2008-10-08 at 16:03 +0200, Sune Foldager wrote:
>>>> These patches add a -c (--changeset) option to diff and extdiff.
>>>> [...]
>>>>
>>> If I understand correctly, this is almost the same as hg export, no?
>>> The difference being that it works with external diff?
>>
>> Yes... when used like hg diff -cr ..., it's about the same as hg
>> export ..., but I think it's a good addition for two reasons:
>>
>> 1. People probably don't think about looking for the export command
>> when they want to see what differences a changeset contains, and
>> 2. No such thing could be done with external diff, and I think it's a
>> good thing to keep the features somewhat in sync, so people can have
>> stronger expectations about the options of related commands.
>>
>> Also, it provides a convenient way to diff the working dir against a
>> second parent (when used like hg diff --switch-parent, same with
>> extdiff). For what it's worth, I had no idea export could already do
>> something similar before I skimmed the code for it, because it was
>> right next to diff in commands.py ;-). But also log can do something
>> similar: hg log -pr .., but again without the --switch-parent feature
>> (-p apparently just picks the first parent).
>>
>> Also, I guess this would work with individual files (I didn't touch
>> that part of the diff code at all), so that's another feature :-).
>
> Ok, you've convinced me it's an interesting feature, I'm just not sure I
> like having even more options for diff. It would be nice if we had some
> standard way of referring to "the first parent of changeset x", "the
> ancestor of x and y", etc. and then we'd have more general capability
> everywhere without new options.
Addressing revisions instead of revisions delta would be very handy too with "hg status".
--
Patrick Mézard
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