note sundialsvc4 <p> To me, this is the sort of problem that should be described in terms of a <em>grammar,</em> and then handled using [mod://Parse::RecDescent]. &nbsp; (I have used that module quite extensively and it works very well.) </p><p> Let me give you one small tip if you go that way... &nbsp; Part of your code will consist of the grammar and Perl code that will be compiled on-the-fly into it. &nbsp; This is a great place to put a <tt>use</tt> statement(s) that will link to any subroutines that you find that you need to make use of in the grammar code. </p><p> Anyway, the advantage of this approach is that you describe the structure of the language being processed and let the parser do the magic. &nbsp; It takes a bit of practice to get the grammar right, heh, but the <em>parser</em> can handle the mechanics of regex&rsquo;ing and backtracking so that your code doesn&rsquo;t have to. &nbsp; You can extend it to do more things without getting buried. </p> 1017155 1017155