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Re: ISO character entitties (was Re: Web Magazine featuring Accessibility issues)

From: Christopher R. Maden <crism@exemplary.net>
Date: Thu, 21 Oct 1999 12:45:49 -0700
Message-Id: <v01530500b4351c9e719b@[]>
To: w3c-wai-ig@w3.org
[In reply to Gregory Rosmaita]
Short answer: always use a semicolon.  It's always right and never wrong.
What you tell your students is useful, and I don't see a need to modify it.

But what I was saying to Leonard is that, per ISO 8879 (SGML), an entity
reference can be ended with a semicolon or record end (RE, SGML's way of
referring to the end of a line).  However, if neither is present, the
parser will accept all of the name characters after the ampersand, and stop
when it comes to something that isn't a name character.  Name characters
are letters, numbers, the hyphen and the period.  In your example, AT&ampT,
the name characters following the ampersand are a-m-p-T, so there is a
reference to the undefined entity "ampT".  Many browsers incorrectly
interpret this; Lynx is not among them.  But in a URL with ampersands,
you're more likely to run into a non-name character such as = or " than you
are to run into a semicolon or end of line.  Entity recognition will
(properly) stop with those characters.


Christopher R. Maden, Solutions Architect
Exemplary Technologies
One Embarcadero Center, Ste. 2405
San Francisco, CA 94111
Received on Thursday, 21 October 1999 15:47:16 UTC

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