Re: XML Quiz

David Carlisle <[email protected]> Tue, 3 May 2022 15:29:46 +0100

Newsgroups	gmane.text.xml.devel
Message-ID	<CAEW6iOi+6eLjPQo0QadVA-_0dr8Qa=tiBN+hv0FOTa5M0HCyCw@mail.gmail.com>

On Tue, 3 May 2022 at 13:28, Roger L Costello <[email protected]> wrote:

> After XML parsing is complete, every occurrence of &amp; will have been
> replaced by &
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>    1. True
>    2. False
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> Scroll down to see the answer ……………
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> False! If the &amp; is within a CDATA section or within a comment, then it
> will be unchanged. Otherwise, it will be changed.
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> Lesson Learned: An XML lexer/parser must perform conditional processing:
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> IF (&amp; is within a CDATA section or comment) THEN
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>     OUTPUT(“&amp;”)
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> ELSE
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>     OUTPUT(“&”)
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That's a strange way to describe the condition (and I doubt it corresponds
to real code)
It's not that you scoop up `&amp;` then decide what to do with it, rather
it is

if & is within a CDATA section or comment or PI ....
   &
else
 start scanning for an entity or character reference


Your description would need separate tests for &amp;  and &rightarrow; and
&eacute; ....

David