Function regnext

v2/engine/regexp.c:1147–1163

- regnext - dig the "next" pointer out of a node */

 - regnext - dig the "next" pointer out of a node
 */
static char *
regnext( register char *p )
{
    register int offset;

    if (p == &regdummy)
        return(NULL);

    offset = NEXT(p);
    if (offset == 0)
        return(NULL);

    if (OP(p) == BACK)
        return(p-offset);
    else
        return(p+offset);
}

#ifdef DEBUG