Item11918: The {MailerContrib}{EmailFilterin} example yields regexp warning. Provide better example.

The info text in bin/configure for {MailerContrib}{EmailFilterIn} states: "You can use this expression to - for example - filter email addresses on your company domain, or even block use of raw emails in WebNotify altogether (just make it something that will never match, e.g. ^notAnEmail$)."

However, with the LocalSite.cfg line:

$Foswiki::cfg{MailerContrib}{EmailFilterIn} = '^notAnEmail$';

I get stderr output on the cron job that runs tools/mailnotify :

$+ matches null string many times in regex; marked by <-- HERE in m/                 
                    ^\s+\*\s(?-xism:(?:Main\.)?)                                     
                    ((?x-ism:                                                        
            [A-Z]+                                                                   
            [a-z\d]+                                                                 
            [A-Z]+                                                                   
            [A-Za-z\d]*                                                              
       ))                                                                            
                    \s+\-\s+                                                         
                    (^notAnEmail$+ <-- HERE )                        
                    \s*$/ at /var/www/wiki/lib/Foswiki/Contrib/MailerContrib/WebNotify.pm line 347.

mailnotify once again performs as expected when I substitute the pattern ^@@notAnEmail

This is either a documentation fix, or a regexp fix. I'll leave that determination to folks who are familiar with the code.

-- ArthurProkosch - 01 Jun 2012

Updated the documentation to use your suggested match, and added a unit test that demonstrated the original problem and confirms that your suggestion works. Thanks!

-- GeorgeClark - 07 Nov 2012

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