Matching Line Boundaries in a Regular Expression (Pattern.MULTILINE/(?m)) is broken in Java?
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by Mister M. Bean
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Published on 2010-04-25T08:34:32Z
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2010/04/25
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The example on http://www.exampledepot.com/egs/java.util.regex/Line.html gives false for me twice but should'nt! Why?
CharSequence inputStr = "abc\ndef";
String patternStr = "abc$";
// Compile with multiline enabled
Pattern pattern = Pattern.compile(patternStr, Pattern.MULTILINE);
Matcher matcher = pattern.matcher(inputStr);
boolean matchFound = matcher.find(); // true
// Use an inline modifier to enable multiline mode
matchFound = pattern.matches(".*abc$.*", "abc\r\ndef"); // false
System.out.println(matchFound); // false
matchFound = pattern.matches("(?m).*abc$.*", "abc\r\ndef"); // true
System.out.println(matchFound);// false !!!!!
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