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Re: New Working Draft : BECSS

From: Håkon Wium Lie <howcome@operasoftware.com>
Date: Sun, 24 Oct 1999 22:07:13 +0200 (Europe de l'Ouest (Heure d'?t?))
Message-ID: <14355.26353.780000.883456@TING>
To: www-style@w3.org
I'm running late on this one, but here's my reply:

 > Can you please all answer to the 3 following questions (mark answer with X)?
 > [ ]	[x]	Should CSS and Behavioral Extensions be mergeable in a
 > 		single file, from a web author's perspective ?
 > [ ]	[x]	Should CSS and Behavioral Extensions be mergeable in a
 > 		single file, from a developer's perspective ?
 > [ ]  [x]	Should the text/css mimetype be used for CSS and BECSS ?

(CSS should continue to use "text/css", however)

 > [x]	[ ]	Should we propose instead a new mimetype and a new rel/rev value ?
 > Comments and explanations :

The distiction between presentation and user interface is somewhat
blurry and I support experiments in the field -- :hover is a good
example. I think, however, that all new proposals for CSS should be
declarative; adding executable code to content labeled as "text/css"
(which is proposed by [1]) is too much of a break with the past. For
example, the last line of CSS1 [2] -- before Appendix A -- states:

   We do not expect CSS to evolve into:
      a programming language

The RFC [1] which describes the "text/css" content type says, under
"Security considerations":

    CSS style sheets consist of declarative property/value pairs
    assigned to element selectors. They contain no executable code.

I do not think it is prudent to remove the "no" in the last sentence
at this point.

[1] http://www.w3.org/TR/1999/WD-becss-19990804
[2] http://www.w3.org/TR/REC-CSS1
[3] http://sunsite.auc.dk/RFC/rfc/rfc2318.html

I believe it's in everyone's long term interest -- including web
designers -- that executable code is kept out of CSS.


Håkon Wium Lie                     http://www.opera.com/people/howcome
howcome@opera.com                                gets you there faster
Received on Sunday, 24 October 1999 16:17:58 UTC

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