D2903: utils: add isauthorwellformed function

[pulkit (Pulkit Goyal)]

pulkit added a comment.


  In https://phab.mercurial-scm.org/D2903#46731, @lothiraldan wrote:
  
  > @pulkit do we need the b prefix when calling `re.compile` for Python3 compat?
  
  
  Not necessary, transformer will do that but it will be good adding the b'' prefix.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D2903

To: sheehan, #hg-reviewers
Cc: lothiraldan, pulkit, mercurial-devel