6328855: String: Matches hangs at short and easy Strings containing \r \n
6192895: java.util.regex.Matcher: Performance issue
6345469: java.util.regex.Matcher utilizes 100% of the CPU
6988218: RegEx matcher loops
6693451: RegEx matcher goes into infinite delay
7006761: Matcher.matches() has infinite loop
8140212: Slow performance of Matcher.find
8151481: j.u.regex.Pattern cleanup
6609854: Regex does not match correctly for negative nested character classes
4916384: CANON_EQ supports only combining character sequences with non-spacing marks
4867170: Pattern doesn't work with composite character in CANON_EQ mode
6995635: CANON_EQ pattern flag is buggy
6728861: ExceptionInInitializerError is caught when the pattern has precomposed character
6736245: A character in Composition Exclusion Table does not match itself
7080302: the normalization in java regex pattern may have flaw
Reviewed-by: rriggs, okutsu, alanb