templater: replace 'ctx._repo' with 'ctx.repo()'

mercurial/templatekw.py

@@ -397,7 +397,7 b' def showsubrepos(**args):'
 def shownames(namespace, **args):
     """helper method to generate a template keyword for a namespace"""
     ctx = args['ctx']
-    repo = ctx._repo
+    repo = ctx.repo()
     ns = repo.names[namespace]
     names = ns.names(repo, ctx.node())
     return showlist(ns.templatename, names, plural=namespace, **args)

mercurial/templater.py

@@ -391,7 +391,7 b' def revset(context, mapping, args):'
 
     raw = args[0][1]
     ctx = mapping['ctx']
-    repo = ctx._repo
+    repo = ctx.repo()
 
     def query(expr):
         m = revsetmod.match(repo.ui, expr)