Capitalized terms are incorrectly mapped to fields

[Arjen]

I'm sorry for not having tested this simple case.

The query "title:acm"

Returns this correct description: Xapian::Query(XTTacm:(pos=1))

The query "title:ACM" Xapian::Query(XTT:Racm:(pos=1))

The term is indexed as XTTRacm, so there won't be a match

[Olly Betts]

I guess XTTRacm is the incorrect one - otherwise we get a collision between ACM with prefix XTT and acm with prefix XTTR. But that does mean existing indexes need rebuilding. Hmm. I'll take a look.

[Olly Betts]

OK, raw terms with a multicharacter prefix are now indexed with a : inserted (e.g. as XFOO:Rterm). This matches what the query parser does.

[Olly Betts]

Fixed in 0.8.0