D723: templates: introduce a obsfateoperation() function

[quark (Jun Wu)]

quark added a comment.


  In https://phab.mercurial-scm.org/D723#12511, @martinvonz wrote:
  
  > This is just a test case, do we really care that much? (I don't :-))
  
  
  No. I thought there is a default template. But there isn't.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D723

To: martinvonz, #hg-reviewers, quark, durin42
Cc: lothiraldan, quark, mercurial-devel