Change Details

When getopt encounters an unknown/invalid option, it puts the character in optopt, and sets ch to '?'. We probably want to either set opterr to 0 to suppress the built-in message ("dtc: illegal option") or remove the one in dtc.cc ("Unknown option").

Since we don't set opterr to 0, getopt prints a message when it encounters an unknown/invalid option. We therefore don't need to print our own message in the default handler.

When getopt encounters an unknown/invalid optionSince we don't set opterr to 0, it puts thegetopt prints a message when it character inencounters an unknown/invalid optopt,ion. and sets ch to '?'. We probably want to eiWe ther set opterr to 0 to suppress theefore don't need to built-iprint our own message ("dtc: illegal option") or remove the onein the default handler. in dtc.cc ("Unknown option").