--- a/CHANGELOG	Wed Dec 27 04:09:50 2017 +0530
+++ b/CHANGELOG	Wed Jan 10 19:47:43 2018 +0530
@@ -20,6 +20,7 @@
   * evolve: preserve phase information with --continue (issue5720)
   * evolve: --continue now properly reports merges as evolve
   * commit: suggest using topic on new heads
+  * obslog: add color support to content-diff output with --patch
 
 topic (0.7.1)
 

--- a/hgext3rd/evolve/obshistory.py	Wed Dec 27 04:09:50 2017 +0530
+++ b/hgext3rd/evolve/obshistory.py	Wed Jan 10 19:47:43 2018 +0530
@@ -167,18 +167,6 @@
     extra = ' ' * indent
     return "".join(extra + line for line in content.splitlines(True))
 
-def getmarkercontentpatch(repo, node, succ):
-    # Todo get the ops from the cmd
-    diffopts = patch.diffallopts(repo.ui, {})
-    matchfn = scmutil.matchall(repo)
-
-    repo.ui.pushbuffer()
-    cmdutil.diffordiffstat(repo.ui, repo, diffopts, node, succ,
-                           match=matchfn, stat=False)
-    buffer = repo.ui.popbuffer()
-
-    return _indent(buffer)
-
 def getmarkerdescriptionpatch(repo, base, succ):
     basectx = repo[base]
     succctx = repo[succ]
@@ -518,15 +506,24 @@
                 fm.plain(descriptionpatch)
 
             # Content patch
-            contentpatch = getmarkercontentpatch(repo, node, succ)
-            if contentpatch:
-                fm.plain("\n")
-                fm.plain(contentpatch)
+            diffopts = patch.diffallopts(repo.ui, {})
+            matchfn = scmutil.matchall(repo)
+            firstline = True
+            for chunk, label in patch.diffui(repo, node, succ, matchfn,
+                                             changes=None, opts=diffopts,
+                                             prefix='', relroot='',
+                                             hunksfilterfn=None):
+                if firstline:
+                    fm.plain('\n')
+                    firstline = False
+                if chunk and chunk != '\n':
+                    fm.plain('    ')
+                fm.write('patch', '%s', chunk, label=label)
         else:
-            patch = "    (No patch available, %s)" % _patchavailable[1]
+            nopatch = "    (No patch available, %s)" % _patchavailable[1]
             fm.plain("\n")
             # TODO: should be in json too
-            fm.plain(patch)
+            fm.plain(nopatch)
 
     fm.plain("\n")
 

--- a/tests/test-evolve-obshistory.t	Wed Dec 27 04:09:50 2017 +0530
+++ b/tests/test-evolve-obshistory.t	Wed Jan 10 19:47:43 2018 +0530
@@ -72,6 +72,27 @@
          +42
   
   
+  $ hg obslog --patch --color debug
+  @  [evolve.node|4ae3a4151de9] [evolve.rev|(2)] [evolve.short_description|A1]
+  |
+  x  [evolve.node|471f378eab4c] [evolve.rev|(1)] [evolve.short_description|A0]
+       [evolve.verb|rewritten](description, content) as [evolve.node|4ae3a4151de9] by [evolve.user|test] [evolve.date|(Thu Jan 01 00:00:00 1970 +0000)]
+         --- a/471f378eab4c-changeset-description
+         +++ b/4ae3a4151de9-changeset-description
+         @@ -1,1 +1,3 @@
+         -A0
+         +A1
+         +
+         +Better commit message
+  
+         [diff.diffline|diff -r 471f378eab4c -r 4ae3a4151de9 A0]
+         [diff.file_a|--- a/A0	Thu Jan 01 00:00:00 1970 +0000]
+         [diff.file_b|+++ b/A0	Thu Jan 01 00:00:00 1970 +0000]
+         [diff.hunk|@@ -1,1 +1,2 @@]
+          A0
+         [diff.inserted|+42]
+  
+  
 
   $ hg obslog --no-graph --patch 4ae3a4151de9
   4ae3a4151de9 (2) A1