On Wed, Feb 08, 2017 at 08:51:53PM +0000, Eric Wong
wrote:> Hello,
>
> I'm reading xapian-core/docs/queryparser.rst and haven't been
> able to find a way to escape " (double-quote) inside quoted
> phrases.
>
> Is this possible?
For boolean terms, you can escape double-quote by doubling it.
But for phrases it doesn't make much sense unless your terms contain
double quotes. But TermGenerator treats a double quote as a word
separator, and QueryParser's behaviour is aligned with that.
> I'm also wondering if searching for other special characters,
> such as a literal '*', is possible without triggering a wildcard
> match. It would be helpful for some source code searches.
You can include "*" in a boolean term, but for probabilistic terms you
can't - and TermGenerator similarly treats '*' as a word separator.
You really need compatible definitions of what a word is at indexing
and search time, so if you're doing indexing without TermGenerator with a
radically different definition of what a "word" is, you'll
currently need
to also eschew QueryParser and parse queries yourself.
Cheers,
Olly