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RE: Invisible Skip navigation link

From: Steve Vosloo <stevenvosloo@yahoo.com>
Date: Tue, 6 Aug 2002 12:06:08 +0200
To: <w3c-wai-ig@w3.org>
Message-ID: <000001c23d30$e6535260$130310ac@theijunction.icelogic.co.za>

Hi,

Just tried this in IBM Homepage Reader (HPR) and had a problem with the
ALT on the image. By default HPR adds a full stop to an ALT description,
so ALT="Hello world" gets read as "Hello world." (with a pause after
'world'). But if you add a non-breaking space then you get "Hello world
." which sounds like "Hello world DOT" (because of the space).

Of course if you use the old ALT="Hello world." you get "Hello world..",
which also sounds like "Hello world DOT".

DOH!

Steve





-----Original Message-----
From: w3c-wai-ig-request@w3.org [mailto:w3c-wai-ig-request@w3.org] On
Behalf Of John Foliot - bytown internet
Sent: 26 July 2002 02:22 AM
To: poehlman1@comcast.net; jukka.korpela@tieke.fi; w3c-wai-ig@w3.org
Subject: RE: Invisible Skip navigation link



What about:
	<a href="#content" title="Skip Navigation. Access key =
2.&nbsp;">
	<img src="hello.gif" alt="Hello world.&nbsp;">
	<frame src="banner.html" title="Frame banner.&nbsp;">

I know this validates, but does it create any problems? (I can't think
of any, but...)

JF


> -----Original Message-----
> From: w3c-wai-ig-request@w3.org [mailto:w3c-wai-ig-request@w3.org]On
> Behalf Of poehlman1@comcast.net
> Sent: July 25, 2002 1:40 PM
> To: jukka.korpela@tieke.fi; w3c-wai-ig@w3.org
> Subject: RE: Invisible Skip navigation link
>
>
>
> It might be possible then to delimit the words in some other way such 
> as vertical bar or - or slash but vertical bar might be the best 
> choice.
>
>
> Original Message:
> -----------------
> From: Jukka Korpela jukka.korpela@tieke.fi
> Date: Wed, 24 Jul 2002 10:19:27 +0300
> To: w3c-wai-ig@w3.org
> Subject: RE: Invisible "Skip navigation" link
>
>
>
> Steve Vosloo wrote:
>
> > To cover all bases it seems a good idea to always put a space after 
> > a text description, and usually after some sort of punctuation:
> >
> > <a href="#content" title="Skip Navigation. Access key = 2. "> <img 
> > src="hello.gif" alt="Hello world. "> <frame src="banner.html" 
> > title="Frame banner. ">
>
> In practice, I tend to agree, at least in situations where alt texts 
> would otherwise "run together".
>
> But we have a problem here. The HTML 4 specification says that user 
> agents may ignore leading and trailing spaces in attributes (e.g., 
> treat alt="foo " as equivalent to alt="foo") for "CDATA attributes" 
> (such as title, alt, and
> many others). This is specified in section 6.2 "SGML basic types" (so
you
> may easily miss it when using the specification as a reference):
> http://www.w3.org/TR/html4/types.html#h-6.2
> And it even says in this context: "Authors should not declare
attribute
> values with leading or trailing white space." (Someone might
> interpret this
> "only" as a strong way of saying that authors should not _rely_ on
such
> space being preserved.)
>
> XHTML is a different beast:
> "Whitespace in attribute values is processed according to [XML]."
>   http://www.w3.org/TR/html/#uaconf
> And this means strict (and fairly complicated) normalization rules:
>   http://www.w3.org/TR/REC-xml#AVNormalize
> But those rules do not make stripping leading and trailing spaces 
> mandatory for CDATA attributes - though they _do_ require such 
> stripping for other attributes! (And they require compression of 
> multiple spaces, so that alt="foo  " is normalized to alt="foo ".)
>
> It's difficult to say whether XHTML is intended to _allow_ stripping 
> of leading and trailing spaces in CDATA attributes (as HTML 4 does).
>
> Note that if such stripping is allowed, alt=" " can be treated as 
> identical to alt="", which would not be nice at all if e.g. the image 
> is a separator between adjacent words.
>
> --
> Jukka Korpela, senior adviser
> TIEKE Finnish Information Society Development Centre 
> http://www.tieke.fi
> Phone: +358 9 4763 0397 Fax: +358 9 4763 0399
>
>
> --------------------------------------------------------------------
> mail2web - Check your email from the web at http://mail2web.com/ .
>
>
Received on Tuesday, 6 August 2002 06:03:53 GMT

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