Prompted by e-mail from Chris and continuing truncation at Sekai, I examined the feeds a bit with curl(1), and it seems that WP continues to truncate them, at least when the XML is fetched by a simple-minded client (like the Planet code which Sekai uses). Google Reader somehow manages to fetch the full feed now that I told WP to provide the full feed. How does it do it? It does not scrape HTML, I think, because it showed a limited feed when it was limited in Wordpress. Oh well. I'm entirely clueless about HTTP headers and WP, so it's something to investigate later.