revert: indicate the default choice when prompting to forget files

mercurial/cmdutil.py

@@ -3171,7 +3171,7 b' def _performrevert(repo, parents, ctx, a'
     for f in actions['forget'][0]:
         if interactive:
             choice = repo.ui.promptchoice(
-                _("forget added file %s (yn)?$$ &Yes $$ &No") % f)
+                _("forget added file %s (Yn)?$$ &Yes $$ &No") % f)
             if choice == 0:
                 repo.dirstate.drop(f)
             else:

tests/test-revert-interactive.t

@@ -424,14 +424,14 b' Check the experimental config to invert '
   > n
   > EOF
   forgetting newfile
-  forget added file newfile (yn)? n
+  forget added file newfile (Yn)? n
   $ hg status
   A newfile
   $ hg revert -i <<EOF
   > y
   > EOF
   forgetting newfile
-  forget added file newfile (yn)? y
+  forget added file newfile (Yn)? y
   $ hg status
   ? newfile