[commit-cp] [bugs #11133] java.util.regex.Pattern doesn't handle parens in character sets consistently

[Julian Scheid]

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 of the project: classpath.




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[bugs #11133] Full Item Snapshot:

URL: <http://savannah.gnu.org/bugs/?func=detailitem&item_id=11133>
Project: classpath
Submitted by: Julian Scheid
On: Thu 11/25/2004 at 18:18

Category:  classpath
Severity:  5 - Average
Resolution:  None
Privacy:  Public
Assigned to:  None
Status:  Open
Platform Version:  None


Summary:  java.util.regex.Pattern doesn't handle parens in character sets 
consistently

Original Submission:  Pattern.compile("[(]") works and matches a single open 
paren, but Pattern.compile("([(])") doesn't, nor does 
Pattern.compile("(?:[(])").

I'm not sure whether parens in character sets need to be escaped, but either 
way the current behavior is inconsistent.

A workaround is to extract the paren from the character set and use something 
like (?:[abc]|() instead.

 % gcj --version
gcj (GCC) 4.0.0 20041125 (experimental)













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