[PATCH 11 of 12] templatekw: add a keyword to list all labels

[Sean Farley]

# HG changeset patch
# User Sean Farley <sean.michael.farley at gmail.com>
# Date 1408394525 18000
#      Mon Aug 18 15:42:05 2014 -0500
# Node ID e1ab9da20be237323a1340efa16b58b03525596f
# Parent  f49b99874b05d0a902f8ed02201d9e57fc81c684
templatekw: add a keyword to list all labels

diff --git a/mercurial/templatekw.py b/mercurial/templatekw.py
--- a/mercurial/templatekw.py
+++ b/mercurial/templatekw.py
@@ -374,10 +374,16 @@ def showsubrepos(**args):
 
 def showtags(**args):
     """:tags: List of strings. Any tags associated with the changeset."""
     return showlist('tag', args['ctx'].tags(), **args)
 
+def showlabels(**args):
+    """:tags: List of strings. Any labels in the namespace `namespace`
+    associated with the changeset."""
+    labels = sorted(l[0] for l in args['repo'].nodelabels(args['ctx'].node()))
+    return showlist('label', labels, **args)
+
 # keywords are callables like:
 # fn(repo, ctx, templ, cache, revcache, **args)
 # with:
 # repo - current repository instance
 # ctx - the changectx being displayed
@@ -400,10 +406,11 @@ keywords = {
     'file_copies': showfilecopies,
     'file_copies_switch': showfilecopiesswitch,
     'file_dels': showfiledels,
     'file_mods': showfilemods,
     'files': showfiles,
+    'labels': showlabels,
     'latesttag': showlatesttag,
     'latesttagdistance': showlatesttagdistance,
     'manifest': showmanifest,
     'node': shownode,
     'p1rev': showp1rev,