"fall-through" errors

[Bruce Korb]

../../autoopts/makeshell.c: In function ‘text_to_var’:
../../autoopts/makeshell.c:324:14: error: this statement may fall
through [-Werror=implicit-fallthrough=]
             (*(opts->pUsageProc))(opts, EXIT_SUCCESS);
             ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This warning goes away if the comment "/* FALLTHROUGH */ is present.
You are missing a condition:

        switch (which) {
        case TT_LONGUSAGE:
            (*(opts->pUsageProc))(opts, EXIT_SUCCESS);
            /* NOTREACHED */

Please add the exception for a "/* NOTREACHED */" comment. Thank you.