localrepo: don't reintroduce pruned tag entries when tagging If a commit and a followup tag commit are pruned, there are no references to it in any non obsolete version of .hgtags. Without this change however, the next time a tag is added to another branch, the obsolete references are appended in .hgtags before the new entries for the current tag command. The annotation to unfilter localrepo._tag() has been around since b3af182a1944. The log message for it mentions computing the tag cache though, so I'm not sure if this was misplaced? It looks like branchmap was aware of filtering then, and now tracks a cache per view.

--- a/mercurial/localrepo.py	Thu Feb 05 13:10:07 2015 -0800
+++ b/mercurial/localrepo.py	Wed Oct 01 20:26:33 2014 -0400
@@ -504,7 +504,6 @@
         """
         return hook.hook(self.ui, self, name, throw, **args)
 
-    @unfilteredmethod
     def _tag(self, names, node, message, local, user, date, extra={},
              editor=False):
         if isinstance(names, str):