MQ: break up a 'qrefresh'

[Harvey Chapman]

> On Apr 14, 2015, at 12:32 PM, Harvey Chapman <hchapman-hg at 3gfp.com> wrote:
> 
> 
>> On Apr 14, 2015, at 12:10 PM, John W <jwdevel at gmail.com> wrote:
>> 
>> I know how to do what I want, but before I write an extension for it,
>> I figured I'd ask if there's some better and/or built-in way to do it.
>> 
>> It's a pretty simple situation:
>> 
>> 1. You have a patch applied (call it P1), and it modifies the file 'foo'.
>> 2. You make some updates to 'foo' and run 'qrefresh'. Now P1 is
>> modified (call it P1*).
>> 3. You decide that actually, those changes should be a separate patch (P2).
>> 
>> How best to extract those changes to P1 into a new patch, P2?
>> 
>> In other words: You have P1*, and you want P1, P2
>> 
>> If the MQ patches have their own repo, this is doable with some
>> moderate shenanigans - you need to create one head with P1 and another
>> with P1*, do a diff between them, save that diff as P2, etc.
>> 
>> Is there a more straightforward way to accomplish this in Mercurial?
>> it seems like a fairly common occurrence, so I imagined there might be.
> 
> "hg qrefresh —interactive” will probably work unless your changes are close together.

I had to remove the file from the patch first:

    hg qrefresh -X file
    hg qrefresh -s -i file