Searching for domain.com or username does not produce expected results without host: and author: prefixes

When searching for a domain name without specifying it via the host: prefix, hnapp should find items from that domain anyway. Same for username.

Examples of unsatisfactory searches: http://hnapp.com/?q=type%3Astory+techcrunch.com (no stories from domain techcrunch.com) http://hnapp.com/?q=patio11 (no comments by patio11, only about him)

Possible ways to fix that:

Implement a "did you mean" feature. If any word in the query exists as a username in the DB, or looks like a URL / domain name, show a link to a query that fixes that.
- Make sure to only do this for non-dictionary words and non-technical terms, or it will get annoying.
Create a new tsv_meta TSVECTOR field and put the domain and username in it.
- Must disable stemming for this one.
Amend the DB query to check every word in the query against domain and username fields. Inefficient.

raquo / hnapp