scan

/*
 *  call-seq:
 *     scan(pattern)                   => array
 *     scan(pattern) {|///| block }    => $_
 *  
 *  Equivalent to calling <code>$_.scan</code>. See
 *  <code>String#scan</code>.
 */

static VALUE
rb_f_scan(self, pat)
    VALUE self, pat;
{
    return rb_str_scan(uscore_get(), pat);
}