Always wrap FTS5 query terms in phrase double-quotes instead of
checking a hardcoded list of special characters. Characters like
|, ;, +, #, @ were missing from the list, causing FTS5 syntax
errors (production errors #1 and #1398). Phrase-quoting every term
produces identical results for normal ASCII search (verified via
SQL) while safely handling any character FTS5 chokes on.
Add regression tests for bare special characters and special
characters mixed with normal words.
Claudio Ortolina
ba2566828c