Yes, it has to be one regex... basically I'm using some third-party software (which I don't want to have to hack) that wants me to provide it with the contents of a regular expression in a config variable so that it can use it later for substitution. Something like this:
# IN the config file
$regexp = '@example.com';
$replacement = '@other.com';
# Many places nestled in the code
$mail = s/$regexp/$replacement;
I think I found what I was looking for. Thanks to all.
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