I'm not new to regex, but new to Groovy. Please help, why won't the following
code match what I want?

The valid characters are A-Z, a-z, spaces, period, comma, apostrophe,
hyphen. I want to disqualify anything else.

I started with a simple regex to allow alpha only, but
even that is not working for me. What the heck am I doing wrong??

// mmn = String from posted form

// should match anything that is not alpha
matcher = ( mmn =~ /[^A-Za-z\ \.,'-]/ );
if (matcher.matches()) { //return error message}

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