skip

/*
 * call-seq: skip(pattern)
 *
 * Attempts to skip over the given +pattern+ beginning with the scan pointer.
 * If it matches, the scan pointer is advanced to the end of the match, and the
 * length of the match is returned.  Otherwise, +nil+ is returned.
 *
 * It's similar to #scan, but without returning the matched string.
 *
 *   s = StringScanner.new('test string')
 *   p s.skip(/\w+/)   # -> 4
 *   p s.skip(/\w+/)   # -> nil
 *   p s.skip(/\s+/)   # -> 1
 *   p s.skip(/\w+/)   # -> 6
 *   p s.skip(/./)     # -> nil
 *
 */
static VALUE
strscan_skip(VALUE self, VALUE re)
{
    return strscan_do_scan(self, re, 1, 0, 1);
}