Function regnode

v2/engine/regexp.c:656–675

- regnode - emit a node */

 - regnode - emit a node
 */
static char *           /* Location. */
regnode( int op )
{
    register char *ret;
    register char *ptr;

    ret = regcode;
    if (ret == &regdummy) {
        regsize += 3;
        return(ret);
    }

    ptr = ret;
    *ptr++ = op;
    *ptr++ = '\0';      /* Null "next" pointer. */
    *ptr++ = '\0';
    regcode = ptr;

    return(ret);
}

/*
 - regc - emit (if appropriate) a byte of code