Searching username breaks on short usernames

[cjg]

Because username field uses full text search, it doesn't allow you to search for very short (2 or 3 char names)

This could be sorted by making a very simple "String" metafield type for fields like username. It would just need a

sub get_search_group { return 'set'; }

and

sub get_search_conditions_not_ex (copied from Set.pm)

.. then change many text fields to be "string" instead. eg.

• access - most fields
• eprint - dir
• history - datasetid
• request - email, requester_email (also docid should become an itemid)
• subject - subjectid, parents, ancestors
• user - username, pin

[cjg]

Should now be resolved for usernames, at least.