D3439: templatefilters: add commonprefix

[joerg.sonnenberger (Joerg Sonnenberger)]

joerg.sonnenberger added a comment.


  {str|commonprefix} is not really interesting since it is naturally an iterable of text. The others are covered, the routine tries to optimize a couple of common cases as well now.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3439

To: joerg.sonnenberger, #hg-reviewers
Cc: yuja, mercurial-devel