Select punctuation marks directly adjacent to links, wrap them in spans

Would like to use jQuery to:

1. select any punctuation marks (meaning . , ; : ' " “ ” ‘ ’ etc.) that occur directly before and after any links and then
2. wrap the punctuation marks in spans.

Hence this:

<div id="mydiv">
  Lorem ipsum
  <a href="#">dolor sit amet</a>,
  consectetur
  &ldquo;<a href="#">adipisicing elit</a>&rdquo;.
</div>

to become this:

<div id="mydiv">
  Lorem ipsum
  <a href="#">dolor sit amet</a><span>,</span>
  consectetur
  <span>&ldquo;</span><a href="#">adipisicing elit</a><span>&rdquo;.</span>
</div>

(BTW, &ldquo and ” are quotation marks.)

The content in the div is开发者_高级运维 not fixed. There may also be instances where there's more than one punctuation mark adjacent to a link (as in the above, ”. to become <span>&rdquo;.</span>)

Would really appreciate any help!!

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Sorta similar (but not quite) to this question with regards to selecting text nodes? Using jQuery, how to modify text outside of tags?

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This seems to work:

Try it out: http://jsfiddle.net/GutKg/1/

var $div = $('#mydiv');

var html = $div.html();

html = html.replace(/([^\s\w]+)<a/g, '<span>$1</span><a')
           .replace(/<\/a>([^\s\w]+)/g, '</a><span>$1</span>');

$div.html( html );​

EDIT: Updated to exclude alphanumeric characters adjacent to the tags.

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Extending my question somewhat: what if instead of a lone div with an id, there were many instances of the div (say with the class mydiv) throughout the page?

<div class="mydiv">
  Lorem ipsum
  <a href="#">dolor sit amet</a>,
  consectetur
  &ldquo;<a href="#">adipisicing elit</a>&rdquo;.
</div>
<div class="mydiv">
  Ei vel <a href="#">velit mollis vivendo</a>.
</div>

Cobbled something together off patrick's solution:

$('.mydiv').each(function () {
  html = $(this).html().replace(/([^\s\w]+)<a/g, '<span>$1</span><a')
                       .replace(/<\/a>([^\s\w]+)/g, '</a><span>$1</span>');
  $(this).html( html );
});

It works -- http://jsfiddle.net/ZEC3X/ -- but I dunno, is it the most efficient/logical way to go about doing it?