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&apos isn't and HTML entity and should be encoded as &#39

Most browsers does recognize and render &apos but you may experience
problems in javascript



On Tue, Jun 5, 2012 at 3:00 PM, Vern Hamberg <vhamberg@xxxxxxxxxxx> wrote:

I think this discussion has made a little sense out of something in one
of our products - I had to HTML-encode things like apostrophes - &apos
did not always work - had to use &27, as I recall.

Now I just saw a site that differentiated HTML-encoding vs XML-encoding
- the former has only 4 reserved characters, the latter has 5. The 5th
one is &apos - not part of HTML, therefore, not consistently rendered, IME.

Nice!!

On 6/5/2012 4:05 AM, Larry Ducie wrote:
Hi David,


Firstly, the parser should not parse the content of a CDATA block. That
doesn't mean it wont though. You are at the mercy of the implementation and
they are not all standard. Anybody who has had to talk to many SOAP servers
learns this lesson quickly.
See http://www.w3schools.com/xml/xml_cdata.asp for some details
confirming your belief.

Secondly, when escaping entities yourself there are a few characters to
watch out for - not just the ampersand (&):

Certain characters are reserved because they form the structure of the
markup language. they are<>'".

To escape them they are replaced by representations:

< goes to&lt;
goes to&gt;
' goes to&apos;
" goes to&quot;

Because the escaped representations begin with an ampersand (&) that
character is now also reserved! So we have to escape it too:

& goes to&amp;

If you want to escape the characters yourself NEVER escape the ampersand
last because escaping all the others introduces new ampersands into the
markup and you want to leave those ones alone.

Finally, why work this out yourself? Use an open source tool to do this.
Henrik has built a good one, and you can download mine at
http://sourceforge.net/projects/xmli/files/ They're free and much used.


Cheers

Larry Ducie

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