[Bug 4116] wishlist request - please provide a way to check whether a commit is mq

[Faheem Mitha]

On Sun, 1 Dec 2013, mercurial-bugs at selenic.com wrote:

> http://bz.selenic.com/show_bug.cgi?id=4116
>
> Matt Mackall <mpm at selenic.com> changed:
>
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>             Status|UNCONFIRMED                 |RESOLVED
>                 CC|                            |mpm at selenic.com
>         Resolution|---                         |INVALID
>
> --- Comment #2 from Matt Mackall <mpm at selenic.com> ---
> Python hooks are unsupported and the internal "API" is unsupported -> closed.
>
> I recommend using the mq() revset. For instance:
>
> try:
>  if repo.set('%d and mq()', myrev):
>    print 'yep'
>  else:
>    print 'nope'
> except:
>  print 'no mq extension?'

It doesn't look like this works in my use case.

     print list(repo.set('%d and mq()', ctx))

always gives an empty set, regardless whether I'm qpushing or doing a 
regular commit. I think the problem is that the code needs to be called 
before the commit has completed so it can abort, but in this case the code 
can't check for the commit because it isn't there yet. Perhaps something 
more low level is needed.

                                                            Regards, Faheem