You have an answer... but had you read On asking for help and How do I post a question effectively?, you would have known what that your question might be ill-received:
  1. The Monastery is NOT a code writing service. Rather, it seeks to be a site to help you learn (cf, "feed a man a fish...." and similar). To that end, "how should I (write some particular code)" is a question that tends to receive disparaging replies... or guides like this on some of the most basic protocols here.
  2. If you pose your question -- with code (and data if relevant) -- to seek assistance on a particular issue that has you stumped, you will have learned something in the course of writing that code and exploring the related documentation and you'll usually find that the Monks will be generous with their time and expertise.

In reply to Re: regex, use of lookaround for whole word filtering by ww
in thread regex, use of lookaround for whole word filtering by yonatan

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.