Bug #82642 for Module-Runtime: "argument is not a module name" improve error please

Caleb Cushing via RT wrote: Show quoted text
For debugging you can use Carp::Always (or perform the $SIG{__DIE__} modification yourself) to get a confess-style stack trace from any exception. I'm not going to make Module::Runtime itself use confess, because convention is to have briefer error messages by default. I could possibly use croak instead of die, giving one line of error location, but in your case that would identify some line in Class::Load, not the location of the error in your code. Actually Class::Load calls check_module_name() before require_module(), which makes it more difficult: the line that calls check_module_name(), as it's performing an explicit check, isn't the line in error, so how far up the stack should one look? At best one can guess, which I'm not willing to do. This is a general problem with error handling in Perl, not at all specific to Module::Runtime. The problem arises from the history of using strings directly to represent errors, rather than structured objects that could squirrel away a usually-unseen stack trace. -zefram