D492: context: remove unnecessary default values for matchers (API)

[martinvonz (Martin von Zweigbergk)]

martinvonz added a comment.


  In https://phab.mercurial-scm.org/D492#7991, @dsp wrote:
  
  > if match can't be None, then we should remove it as the default value. Otherwise I look at this in a year and think "why do we not handle a None matcher, when it clearly can be None if the value for match is not set".
  
  
  Definitely. Good catch.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D492

To: martinvonz, #hg-reviewers, dsp
Cc: dsp, mercurial-devel