It is generally useful to be able to restrict searches to a given site, to determine the inlinks of a given document, or to see just the summary of one url. This is what the commands search line site:, link:, and info: do for other search engines. These can be implemented by storing in the inverted index appropriate meta words such as hash(site:url) and the list of documents which are on the site given by that url. The info: meta word is especially for looking up the summary of a url when you are combining the link micropages of bug 5 using the grouping operator of bug 8.

Fixed with commit 7fb47f3