i>options</i>      Option bits
  <i>ovector</i>      Points to a vector of ints for result offsets
  <i>ovecsize</i>     Number of elements in the vector
  <i>workspace</i>    Points to a vector of ints used as working space
  <i>wscount</i>      Number of elements in the vector
</pre>
The options are:
<pre>
  PCRE_ANCHORED      Match only at the first position
  PCRE_NEWLINE_ANY   Recognize any Unicode newline sequence
  PCRE_NEWLINE_ANYCRLF  Recognize CR, LF, and CRLF as newline sequences
  PCRE_NEWLINE_C