[Bug 65100] matches string problem with pattern ^ on z/OS

[bugzilla]

https://bz.apache.org/bugzilla/show_bug.cgi?id=65100

--- Comment #1 from Stefan Bodewig <bode...@apache.org> ---
Well, Ant isn't really doing anything by itself here, it just uses the Java
classlib's regex package.

Can you run

import java.util.regex.Pattern;

public class A {
    public static void main(String[] args) {
        final Pattern without = Pattern.compile("(8|9|10|11)");
        System.err.println("Without carret matches: " +
without.matcher("11").matches());
        final Pattern with = Pattern.compile("^(8|9|10|11)");
        System.err.println("With carret matches: " +
with.matcher("11").matches());
    }
}

and see what you get as a result?

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