templates: document missing keywords or filters

Keywords keywords are not documented yet but are turned into function
definitions to avoid lambda docstring weirdness.

hgext/keyword.py

@@ -109,11 +109,14 b' colortable = {'
 }
 
 # date like in cvs' $Date
-utcdate = lambda x: util.datestr((x[0], 0), '%Y/%m/%d %H:%M:%S')
+def utcdate(text):
+    return util.datestr((text[0], 0), '%Y/%m/%d %H:%M:%S')
 # date like in svn's $Date
-svnisodate = lambda x: util.datestr(x, '%Y-%m-%d %H:%M:%S %1%2 (%a, %d %b %Y)')
+def svnisodate(text):
+    return util.datestr(text, '%Y-%m-%d %H:%M:%S %1%2 (%a, %d %b %Y)')
 # date like in svn's $Id
-svnutcdate = lambda x: util.datestr((x[0], 0), '%Y-%m-%d %H:%M:%SZ')
+def svnutcdate(text):
+    return util.datestr((text[0], 0), '%Y-%m-%d %H:%M:%SZ')
 
 # make keyword tools accessible
 kwtools = {'templater': None, 'hgcmd': ''}

mercurial/templatekw.py

@@ -163,6 +163,9 b' def showbranches(**args):'
         return showlist('branch', [branch], plural='branches', **args)
 
 def showbookmarks(**args):
+    """:bookmarks: List of strings. Any bookmarks associated with the
+    changeset.
+    """
     bookmarks = args['ctx'].bookmarks()
     return showlist('bookmark', bookmarks, **args)