[PATCH topic-ext] topics: allow commits that only change topic (issue4725)

[Matt Mackall]

On Tue, 2015-06-16 at 10:12 -0700, Pierre-Yves David wrote:
> 
> On 06/15/2015 03:30 PM, Matt Mackall wrote:
> > # HG changeset patch
> > # User Matt Mackall <mpm at selenic.com>
> > # Date 1434407347 18000
> > #      Mon Jun 15 17:29:07 2015 -0500
> > # Node ID d038b92c51d91c99b50fd17c829e22212de051bb
> > # Parent  ca2b4e5329fe018fc1279694cc89f74a7d6f4ccd
> > topics: allow commits that only change topic (issue4725)
> >
> > This allows amend to change topics. It also matches the behavior of branches.
> 
> I do want the amend feature, but I'm not sure if allowing it for plain 
> commit make sense. Matching the behavior for named branches do not make 
> so much sense as this could result in plain empty commit when they 
> become public.

Perhaps we can require that the commit already has a topic set (and is
thus non-empty for other reasons).

-- 
Mathematics is the supreme nostalgia of our time.