--- a/hgext3rd/topic/__init__.py	Tue Jun 27 15:21:38 2017 +0200
+++ b/hgext3rd/topic/__init__.py	Wed Jun 28 01:58:09 2017 +0200
@@ -129,7 +129,7 @@
         topic = repo.currenttopic
         if not topic:
             raise error.Abort(_('cannot resolve "%s": no active topic') % name)
-        revs = list(stack.getstack(repo, topic))
+        revs = list(stack.getstack(repo, topic=topic))
         try:
             r = revs[idx - 1]
         except IndexError:
@@ -312,7 +312,7 @@
         topic = repo.currenttopic
     if not topic:
         raise error.Abort(_('no active topic to list'))
-    return stack.showstack(ui, repo, topic, opts)
+    return stack.showstack(ui, repo, topic=topic, opts=opts)
 
 def _changecurrenttopic(repo, newtopic):
     """changes the current topic."""
@@ -420,7 +420,7 @@
         fm.data(active=active)
         if ui.verbose:
             # XXX we should include the data even when not verbose
-            data = stack.stackdata(repo, topic)
+            data = stack.stackdata(repo, topic=topic)
             fm.plain(' (')
             fm.write('branches+', 'on branch: %s',
                      '+'.join(data['branches']), # XXX use list directly after 4.0 is released