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https://issues.apache.org/jira/browse/LUCENE-5839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14068520#comment-14068520
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Tim Allison commented on LUCENE-5839:
-------------------------------------
Created edge case to test this.
LUCENE-5504 is a cleaner way to go to deal with this.
While looking at the code again, I noticed that AnalyzingQueryParser is using
the superclass' getXQuery. This will have the effect of lowercasing whatever
happens after analysis. If someone's analyzer is upcasing,
AnalyzingQueryParser will fail. I can submit another patch to fix this, but I
think something along the lines of LUCENE-5504 is a better way to go.
> Regex bug in AnalyzingQueryParser
> ---------------------------------
>
> Key: LUCENE-5839
> URL: https://issues.apache.org/jira/browse/LUCENE-5839
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/queryparser
> Affects Versions: 4.9
> Reporter: Tim Allison
> Priority: Trivial
>
> Dennis Walter recently pointed out this bug on dev@lucene.apache.org:
> " // gobble escaped chars or find a wildcard character
> private final Pattern wildcardPattern = Pattern.compile("(\\.)|([?*]+)");
> The first group will match a literal dot ("."), while its intention seems to
> be to match a backslash and a single character. So the expression should
> instead be "(\\\\.)|([?*]+)" "
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