Brian Feldman created LUCENE-9718:
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Summary: REGEX Pattern Search, character classes with quantifiers
do not work
Key: LUCENE-9718
URL: https://issues.apache.org/jira/browse/LUCENE-9718
Project: Lucene - Core
Issue Type: Bug
Components: core/search
Affects Versions: 8.6.3, 7.7.3
Reporter: Brian Feldman
Character classes with a quantifier do not work, no error is given and no
results are returned. For example \d\{2} or \d\{2,3} as is commonly written in
most languages supporting regular expressions, simply and quietly does not
work. A user work around is to write them fully out such as \d\d or [0-9][0-9]
or as [0-9]\{2,3} .
This inconsistency or limitation is not documented, wasting the time of users
as they have to figure this out themselves. I believe this inconsistency should
be clearly documented and an effort to fixing the inconsistency would improve
pattern searching.
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