Octavian Mocanu created LUCENE-8572:
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Summary: StringIndexOutOfBoundsException in
parser/EscapeQuerySyntaxImpl.java
Key: LUCENE-8572
URL: https://issues.apache.org/jira/browse/LUCENE-8572
Project: Lucene - Core
Issue Type: Bug
Components: core/queryparser
Affects Versions: 6.3
Reporter: Octavian Mocanu
With "lucene-queryparser-6.3.0", specifically in
"org/apache/lucene/queryparser/flexible/standard/parser/EscapeQuerySyntaxImpl.java"
when escaping strings containing extended unicode chars, and with a locale
distinct from that of the character set the string uses, the process fails,
with a "java.lang.StringIndexOutOfBoundsException".
The reason is that the comparison is done by previously converting all of the
characters of the string to lower case chars, and by doing this, the original
string size isn't anymore the same, but less, as of the transformed one, so
that executing
org/apache/lucene/queryparser/flexible/standard/parser/EscapeQuerySyntaxImpl.java:89
fails with a java.lang.StringIndexOutOfBoundsException.
I wonder whether the transformation to lower case is really needed when
treating the escape chars, since by avoiding it, the error may be avoided.
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