Subject: Re: [xsl] Re: Output validation with XSLT 2.0 From: Tony Graham <Tony.Graham@xxxxxxxxxxxxxxxxxxxxxx> Date: Mon, 05 May 2008 14:32:45 +0100 |
On Mon, May 05 2008 13:24:12 +0100, dnovatchev@xxxxxxxxx wrote: > On Mon, May 5, 2008 at 4:02 AM, Liam Quin <liam@xxxxxx> wrote: >> On Sun, May 04, 2008 at 08:29:33AM -0700, Dimitre Novatchev wrote: >> > And what if there are two good books that say different things about a >> > feature? Isn't then the spec the "true source" to be used in resolving >> > any such ambiguities? >> >> Not always -- you have to compare what implementations actually do in >> such cases; sometimes the best anser is to change the specification to >> reflect actual implementations. > > We are *not* comparing worms and apples here. > By "resolving ambiguities" of two different implementations of a > feature I mean deciding which of them is compliant and which not > (wasn't this clear?). Sometimes reality isn't that clear, e.g.: But most of all CSS 2.1 represents a "snapshot" of CSS usage: it consists of all CSS features that are implemented interoperably at the date of publication of the Recommendation. [1] I doubt that producing a CSS 2.1 this way was a design goal of the original CSS 2 effort. > Even if in a particular case the answer is that both implementations > are not compliant, the base for giving such an answer still will be > the spec that the implementations implement. Unless enough people decide otherwise, e.g.: WS-I's deliverables provide resources for Web services developers to create interoperable Web services and verify that their results are compliant with WS-I guidelines. Key WS-I deliverables include Profiles, Sample Applications and Testing Tools. [2] I like specs, I really do -- I've worked on several and am helping work towards another one even now -- but Liam does have a point about specs sometimes having to accommodate to reality. Regards, Tony Graham Tony.Graham@xxxxxxxxxxxxxxxxxxxxxx Director W3C XSL FO SG Invited Expert Menteith Consulting Ltd XML, XSL and XSLT consulting, programming and training Registered Office: 13 Kelly's Bay Beach, Skerries, Co. Dublin, Ireland Registered in Ireland - No. 428599 http://www.menteithconsulting.com -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- xmlroff XSL Formatter http://xmlroff.org xslide Emacs mode http://www.menteith.com/wiki/xslide Unicode: A Primer urn:isbn:0-7645-4625-2 [1] http://www.w3.org/TR/CSS21/ [2] http://www.ws-i.org/deliverables/Default.aspx
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