[PATCH] hg: show code function in diffs

[Thomas De Schampheleire]

# HG changeset patch
# User Thomas De Schampheleire <thomas.de.schampheleire at gmail.com>
# Date 1430758036 -7200
#      Mon May 04 18:47:16 2015 +0200
# Node ID 1f24798c84fac57d2c3c2c453289a9ce9c9a3496
# Parent  f318ddf79897faeb0d8ba520014d993657249803
hg: show code function in diffs

Just like already done for git diffs, show the function containing the
change in the hunk header of a diff, if available:

   @@ -19,7 +19,7 @@ int func(void)

instead of

   @@ -19,7 +19,7 @@

diff --git a/kallithea/lib/vcs/backends/hg/repository.py b/kallithea/lib/vcs/backends/hg/repository.py
--- a/kallithea/lib/vcs/backends/hg/repository.py
+++ b/kallithea/lib/vcs/backends/hg/repository.py
@@ -264,6 +264,7 @@ class MercurialRepository(BaseRepository
 
         return ''.join(patch.diff(self._repo, rev1, rev2, match=file_filter,
                           opts=diffopts(git=True,
+                                        showfunc=True,
                                         ignorews=ignore_whitespace,
                                         context=context)))