D3439: templatefilters: add commonprefix

[joerg.sonnenberger (Joerg Sonnenberger)]

joerg.sonnenberger added a comment.


  In https://phab.mercurial-scm.org/D3439#58405, @martinvonz wrote:
  
  > Do you think we should call it `commonpath()` or `commondir()` instead in case we want `commonprefix()` to work for any string in the future (and not care about path separators)?
  
  
  `commondir()` would be fine as well. `commonpath()` doesn't feel better. I'm ambivalent about either name.

REPOSITORY
  rHG Mercurial

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

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