The rss spec says that unless the attribute is set, guid elements *are*
permalinks. The problem with that is that if [[meta permalink=]] is used,
as is done with aggregated posts, that goes into the link element, and
apparently some rss readers prefer the not-really-permalink in the guid
element when linking to the post.
Without meta permalink, the link and guid elements have the same content,
so it should be ok, in that case too for the guid to not be a permalink.
(Checked and this does not flood aggregators.)
atom feeds, and also changing the publication time for a feed to the
newest modiciation time (was newest creation time).
* The patch also adds dcterms:creator to rss items that have a known author.
ESCAPE=HTML for titles in the templates for these feeds, and instead
escape the title going in to the template. Previously, the title was
sometimes double-escaped in a feed (if set via meta title), and sometimes
not (if set from the page filename).
* In the meta plugin, when a title is set, encode the html entities in it
numerically. This works better in the current landscape of a rss spec that
doesn't specify encoding, and variously broken feed consumers, according
to <http://www.rssboard.org/rss-profile#data-types-characterdata>.
* Add feeds=no option to inline preprocessor directive to turn off all types
of feeds. feeds=rss will still work, and feeds=atom was also added, for
fine control.
* $IkiWiki::version now holds the program version, and is accessible to
plugins.
* Add permalink and author support to meta plugin, affecting RSS feeds
and blog pages.
* Change titlepage() to encode utf-8 alnum characters. This is necessary
to avoid UTF-8 creeping into filenames in urls. (There are still
some other ways that it can get in.)