Subject: Style vs. transformation From: Richard Light <richard@xxxxxxxxxxxxxxxxx> Date: Tue, 3 Mar 1998 09:20:57 +0000 |
In message <34FB3F36.1F751837@xxxxxxxxxxxxxxxx>, Paul Prescod <papresco@xxxxxxxxxxxxxxxx> writes >I think that this is the correct argument against a two-step transform. >It is worth noting that DSSSL's first-step is optional, not implemented >by Jade, and not relied upon by any of the stylesheets I am aware of. In >other words, it is optional in every relevant sense. It would be strange >if the DSSSL "subset" for the web made it mandatory. I take the point about real-world DSSSL implementation being a one-step process, but it might be worth our being more precise about the DSSSL situation. The DSSSL standard has two parts - a Transformation Language and a Style Language. Both parts are equally 'optional': the wording of Section 2 (Conformance) is carefully symmetrical in allowing transformation-only, style-only and 'two-stage' conforming DSSSL applications. So yes, DSSSL _as_implemented_ just gives us the DSSSL style language, or more precisely, the DSSSL-O subset of the DSSSL style language. This, I would argue, has very limited transformation abilities, which beings us back to the original point - how do we support reasonably complex transformations in XSL? If we do have to invent something, then I am simply suggesting that we look to DSSSL-transform for ideas rather than starting from scratch. (Incidentally, I would see this issue as similar to the need to include XLL and XSL itself in the XML framework, even though its antecedent SGML doesn't have built-in linking and style support. Sometimes the needs of the Web take us further than we went before ...) Richard Light. Richard Light SGML/XML and Museum Information Consultancy richard@xxxxxxxxxxxxxxxxx XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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