I uncovered some problems with @INC and require, so I dug into the perl source for the first time (well, except for some playing around before). I found the place in perl.c that was causing our @INC problems (I sitll don't know the exact solution; I have some ideas, but am not sure of the ramifications), and Simon Cozens pointed me to pp_ctl.c for pp_require, and that led me to util.c for PERL_FILE_IS_ABSOLUTE or somesuch. I am not sure what the logic should be there yet, but I put in some test code and it is working OK for now.
Anyway, it's good to get into it and play around with the code.
