Using regex with custom behaviour by compiling the Pattern with flags
suggest changeA Pattern can be compiled with flags, if the regex is used as a literal String, use inline modifiers:
Pattern pattern = Pattern.compile("foo.", Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
pattern.matcher("FOO\n").matches(); // Is true.
/* Had the regex not been compiled case insensitively and singlelined,
* it would fail because FOO does not match /foo/ and \n (newline)
* does not match /./.
*/
Pattern anotherPattern = Pattern.compile("(?si)foo");
anotherPattern.matcher("FOO\n").matches(); // Is true.
"foOt".replaceAll("(?si)foo", "ca"); // Returns "cat".
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