I don't think CGI::Carp is lexically scoped. That is to say, if you put 
use CGI::Carp qw/fatalsToBrowser/;

[download]
in your CGI scripts and not in your modules, it should work fine both ways when some piece of code in the module's methods happens to die.

In reply to Re: How to conditionally use CGI::Carp? by Errto
in thread How to conditionally use CGI::Carp? by argv

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