Maybe there is a different plugin (I also tried toggle)?
+> I am not a fan of the more directive (thus the rant about it sucking
+> embedded in its [[example|ikiwiki/directive/more]]). But I don't think
+> that weakening it to not work in rss feeds is a good idea, if someone
+> wants to force users to go somewhere to view their full content,
+> they should be able to do it, even though it does suck.
+>
+> The toggle directive will degrade fairly well in an rss feed to
+> display the full text. (There is an annoying toggle link that does
+> nothing when embedded in an rss feed). --[[Joey]]
+
I also note, that at least currently, more seems to break on a few pages, not being parsed at all when aggregated into the front page.
+> It's just a simple directive, it should work anywhere any directive will,
+> and does as far as I can see. Details? --[[Joey]]
+
see also: [[/bugs/rss_feeds_do_not_use_recommended_encoding_of_entities_for_some_fields/]]