diff --git a/doc/ikiwiki/pagespec/discussion.mdwn b/doc/ikiwiki/pagespec/discussion.mdwn
index 2b2008001..1ffb89d6c 100644
--- a/doc/ikiwiki/pagespec/discussion.mdwn
+++ b/doc/ikiwiki/pagespec/discussion.mdwn
@@ -127,3 +127,8 @@ I'd like to create a collapsable tree with a map, eg
 but I can't work out how to specify "all items at this level, and all directories at ../ and all the other directories to the root
 
 any ideas?
+
+> I don't think pagespecs currently support that. How would such a made-up
+> pagespec look? I can imagine it supporting something like `glob(../*) and not
+> glob(../*/*)` to match all "directories" of the parent page, and so on up
+> to the root. --[[Joey]]