D3162: bookmarks: introduce a repo._bookmarks.ctx(mark) method and use it

[indygreg (Gregory Szorc)]

indygreg added a comment.


  How do you feel about `changectx` instead of `ctx`? This would seemingly jive with other naming throughout the code base.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3162

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