Function argcheck

src/earlyarg.c:449–560

* Returns: * 0 = no match * 1 = found and skip past this argument * 2 = found and trigger immediate exit */

 *    2 = found and trigger immediate exit
 */
int
argcheck(int argc, char *argv[], enum earlyarg e_arg)
{
    int i, idx;
    boolean match = FALSE;
    char *userea = (char *) 0;
    const char *dashdash = "";

    for (idx = 0; idx < SIZE(earlyopts); idx++) {
        if (earlyopts[idx].e == e_arg){
            break;
        }
    }
    if (idx >= SIZE(earlyopts) || argc < 1)
        return 0;

    for (i = 0; i < argc; ++i) {
        if (argv[i][0] != '-')
            continue;
        if (argv[i][1] == '-') {
            userea = &argv[i][2];
            dashdash = "-";
        } else {
            userea = &argv[i][1];
        }
        match = match_optname(userea, earlyopts[idx].name,
                              earlyopts[idx].minlength,
                              earlyopts[idx].valallowed);
        if (match)
            break;
    }

    if (match) {
        const char *extended_opt = strchr(userea, ':');

        if (!extended_opt)
            extended_opt = strchr(userea, '=');
        switch(e_arg) {
        case ARG_DEBUG:
            if (extended_opt) {
                char *cpy_extended_opt;

                cpy_extended_opt = dupstr(extended_opt);
                debug_fields(cpy_extended_opt + 1);
                free((genericptr_t) cpy_extended_opt);
            }
            return 1;
        case ARG_VERSION: {
            boolean insert_into_pastebuf = FALSE;

            if (extended_opt) {
                extended_opt++;
                    /* Deprecated in favor of "copy" - remove no later
                       than  next major version */
                if (match_optname(extended_opt, "paste", 5, FALSE)) {
                    insert_into_pastebuf = TRUE;
                } else if (match_optname(extended_opt, "copy", 4, FALSE)) {
                    insert_into_pastebuf = TRUE;