Subject: Re: [xsl] Notes on Comparison of XSL FO Renderers From: Tony Graham <Tony.Graham@xxxxxxx> Date: Tue, 21 Oct 2003 00:38:29 +0100 (BST) |
Tokushige Kobayashi <koba@xxxxxxxxxxxxx> wrote at Sun, 19 Oct 2003 18:48:47 +0900: ... > Overall, implementation level is as follows: > > XSL Formatter V2.5: 79% > XSL Formatter V3.0: 70% > FOP 0.20.5: 46% > XEP V3.6: 74% > xmlroff: 39% > > There should be many notes for each implementation, I suppose. > More important is incompatibility issue. XSL-FO specification > is sometimes implimented depending on different understanding. Simplistic, single-quantity percentages don't tell enough of the implementation story and could be an impediment to people considering adopting XSL. A single percentage for implementation level is too broad a categorisation to be useful. The XSL 1.0 Recommendation defines three conformance levels, and it would be more useful to present the implementation levels broken up by conformance level. Showing that multiple implementations have 100% or close to 100% for 'Basic' conformance would be a good thing for boosting public confidence in XSL interoperability. Hiding the common level of 'Basic' conformance shows XSL interoperability as worse than it really is and will discourage any people who won't adopt XSL unless there's interoperability. There's also many aspects of XSL formatting that don't fit the neat categorisation of percentage of properties implemented. For example, support for Thai, the ability to use expressions in any property value, and the ability to handle lengths expressed as percentages of the current IPD or BPD don't figure in the conformance section of the Recommendation, but they would each be important to some people. Regards, Tony Graham ------------------------------------------------------------------------ XML Technology Center - Dublin Sun Microsystems Ireland Ltd Phone: +353 1 8199708 Hamilton House, East Point Business Park, Dublin 3 x(70)19708 XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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