[Xapian-discuss] [issue] The difference between QueryParser::FLAG_AUTO_SYNONYMS and QueryParser::FLAG_AUTO_MULTIWORD_SYNONYMS

[hightman]

I don't know whether this is a BUG or for special purpose...

According to the definition of "xapian/queryparser.h", FLAG_AUTO_MULTIWORD_SYNONYMS contains bit of
FLAG_AUTO_SYNONYMS .

Therefore, long as I set the parse flag with FLAG_AUTO_SYNONYMS, the query parser will automatically activate 
the function of FLAG_AUTO_MULTIWORD_SYNONYMS. See the below source code part from "queryparser.lemon"

...
1358     subqs.reserve(terms.size());
1359     if (state->flags & QueryParser::FLAG_AUTO_MULTIWORD_SYNONYMS) {
1360         // Check for multi-word synonyms.
1361         Database db = state->get_database();
...