[
http://issues.apache.org/jira/browse/LUCENE-573?page=comments#action_12429287 ]
Hoss Man commented on LUCENE-573:
---------------------------------
> You assume that the queryparser unescapes the quotes inside
> the phrase, but the queryparser does not unescape *any*
> escaped characters inside a phrase. You can see that in (2),
> where the escaped + (plus) character does not become
> unescaped.
...I'm not sure if this is a fair comaprison. Query parser may not unescape
things like the \+ in this example....
foo "bar \+baz"
...but i believe that is because there is no reason for it to do so, if what
you intended was to match on the + character without a preceding s\ you could
have just written...
foo "bar +baz"
...ie: the plus is already escaped by the nature of being inside the phrase
bounding quotes
this same justification does not hold for the double-quote character however
... there is no way to inlcude a " character inside of a phrase without
escaping, so it seems like query parser should be unescaping it automatically
for you.
correct?
> Escaped quotes inside a phrase cause a ParseException
> -----------------------------------------------------
>
> Key: LUCENE-573
> URL: http://issues.apache.org/jira/browse/LUCENE-573
> Project: Lucene - Java
> Issue Type: Bug
> Components: QueryParser
> Affects Versions: 1.9
> Environment: Debian Sarge, Sun JDK 1.4.2
> Reporter: Tomislav Gountchev
> Priority: Minor
> Attachments: escaped_quotes_inside_phrases.patch
>
>
> QueryParser cannot handle escaped quotes when inside a phrase. Escaped quotes
> not in a phrase are not a problem. This can be added to
> TestQueryParser.testEscaped() to demonstrate the issue - the second assert
> throws an exception:
> assertQueryEquals("a \\\"b c\\\" d", a, "a \"b c\" d");
> assertQueryEquals("\"a \\\"b c\\\" d\"", a, "\"a \"b c\" d\"");
> See also this thread:
> http://www.nabble.com/ParseException-with-escaped-quotes-in-a-phrase-t1647115.html
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