# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1443238682 -32400
# Node ID 882b170ae6162d60e03d60009286d46fdbdb442f
# Parent  0a823de8d7b7be69a10215bffc0153d3528a6e0a
templatekw: port implementation of showparents() from changeset_templater

It isn't cool, but we can peek at ui flag via repo.ui. So, it is possible
to implement showparents() in templatekw, and therefore we can eliminate the
dockeywords hack.

diff -r 0a823de8d7b7 -r 882b170ae616 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Sat Sep 26 12:32:03 2015 +0900
+++ b/mercurial/cmdutil.py	Sat Sep 26 12:38:02 2015 +0900
@@ -1428,24 +1428,8 @@
 
     def _show(self, ctx, copies, matchfn, props):
         '''show a single changeset or file revision'''
-
-        showlist = templatekw.showlist
-
-        # showparents() behavior depends on ui trace level which
-        # causes unexpected behaviors at templating level and makes
-        # it harder to extract it in a standalone function. Its
-        # behavior cannot be changed so leave it here for now.
-        def showparents(**args):
-            ctx = args['ctx']
-            parents = [[('rev', p.rev()),
-                        ('node', p.hex()),
-                        ('phase', p.phasestr())]
-                       for p in scmutil.meaningfulparents(self.repo, ctx)]
-            return showlist('parent', parents, **args)
-
         props = props.copy()
         props.update(templatekw.keywords)
-        props['parents'] = showparents
         props['templ'] = self.t
         props['ctx'] = ctx
         props['repo'] = self.repo
diff -r 0a823de8d7b7 -r 882b170ae616 mercurial/templatekw.py
--- a/mercurial/templatekw.py	Sat Sep 26 12:32:03 2015 +0900
+++ b/mercurial/templatekw.py	Sat Sep 26 12:38:02 2015 +0900
@@ -397,11 +397,17 @@
     parent, all digits are 0."""
     return ctx.p2().hex()
 
-def _showparents(**args):
+def showparents(**args):
     """:parents: List of strings. The parents of the changeset in "rev:node"
     format. If the changeset has only one "natural" parent (the predecessor
     revision) nothing is shown."""
-    pass
+    repo = args['repo']
+    ctx = args['ctx']
+    parents = [[('rev', p.rev()),
+                ('node', p.hex()),
+                ('phase', p.phasestr())]
+               for p in scmutil.meaningfulparents(repo, ctx)]
+    return showlist('parent', parents, **args)
 
 def showphase(repo, ctx, templ, **args):
     """:phase: String. The changeset phase name."""
@@ -491,6 +497,7 @@
     'p1node': showp1node,
     'p2rev': showp2rev,
     'p2node': showp2node,
+    'parents': showparents,
     'phase': showphase,
     'phaseidx': showphaseidx,
     'rev': showrev,
@@ -499,7 +506,6 @@
 }
 
 dockeywords = {
-    'parents': _showparents,
 }
 dockeywords.update(keywords)
 del dockeywords['branches']