D932: filemerge: introduce functions to halt merge flow

[martinvonz (Martin von Zweigbergk)]

martinvonz added a comment.


  In https://phab.mercurial-scm.org/D932#20158, @durin42 wrote:
  
  > Fixing unclear prompts in freeze is fine with me.
  
  
  +1

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D932

To: ryanmce, #hg-reviewers, krbullock, mbthomas, durin42
Cc: yuja, martinvonz, durin42, krbullock, pulkit, mercurial-devel