I want something to tell me, while I'm debugging, the current line # from the input file. For instance, I'd like to add a watch for $. . Is that possible?
Well, you can enable "Show Global Variables" and "Show Perl Internal Variables" in the Variables view to make $. appear there. Another way to check a variable's value is to use the Perl expression view. There's no support for watch expressions in EPIC (they seem to cause huge performance problems, btw).