D3665: graph: improve graph output by using Unicode characters

[johnstiles (John Stiles)]

johnstiles added a comment.


  A proper warning is now issued when the encoding is not UTF-8, or when East-Asian ambiguous characters will be rendered as wide characters.
  The tests have been updated to check these warnings.
  Yuya, I believe this should address everything we discussed. Let me know if you see a need for any further changes.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3665

To: johnstiles, #hg-reviewers
Cc: smf, yuja, mercurial-devel