ith
different values in the <i>match_limit</i> and <i>match_limit_recursion</i>
fields of the <b>pcre_extra</b> data structure, until it finds the minimum
numbers for each parameter that allow <b>pcre_exec()</b> to complete. The
<i>match_limit</i> number is a measure of the amount of backtracking that takes
place, and checking it out can be instructive. For most simple matches, the
number is quite small, but for patterns with very large numbers of matching
possibilities, it can become large very quickly wit