Subject: Re: jade or DSSSL: either one is strange - compared to Scheme From: Matthias Clasen <clasen@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 20 Jul 1999 13:45:32 +0200 |
> Date: Tue, 20 Jul 1999 11:24:27 +0200 (CEST) > From: Joerg Wittenberger <Joerg.Wittenberger@xxxxxxxxx> > Organization: softeYes > X-Url: http://pobox.com/~Joerg.Wittenberger > Sender: owner-dssslist@xxxxxxxxxxxxxxxx > Precedence: bulk > Reply-To: dssslist@xxxxxxxxxxxxxxxx > > Hello, > > This is a snippet of a DSSSL Style sheet. It should customize Norman > Walsh's famous docbook style sheets. > > The original style sheets labels nested sections to arbitrary > depth. I'd like to restrict those labels to a level up to three. > > Implementation idea > > I assumed that I could overwrite the definition of section-autolabel > (within my derived style sheet) as follows: > > (define section-autolabel > (let ((old-definition section-autolabel)) > (lambda (nd #!optional (force-label? #f)) > (let ((depth (node-list-length (ancestor (normalize "section") nd)))) > (if (> depth 3) > "" > (old-definition nd force-label?)))))) > > Problem > > Unfortunatly jade complains > > ...:E: loop in specification of value of "section-autolabel" > > Any ideas what's wrong? Is this what the DSSSL spec requires? I think that in Scheme, top-level definitions are evaluated sequentially, enabling redefinitions like the one you showed. But the dsssl expression language is purely functional and doesn't make promises about the evaluation order of top-level definitions apart from the one that redefinitions in later parts are ignored, redefinitions in the same part are an error and builtin definitions can be overridden. Matthias -- Matthias Clasen, Tel. 0761/203-5606 Email: clasen@xxxxxxxxxxxxxxxxxxxxxxxxxx Mathematisches Institut, Albert-Ludwigs-Universitaet Freiburg DSSSList info and archive: http://www.mulberrytech.com/dsssl/dssslist
Current Thread |
---|
|
<- Previous | Index | Next -> |
---|---|---|
jade or DSSSL: either one is strang, Joerg Wittenberger | Thread | Re: jade or DSSSL: either one is st, Joerg F. Wittenberge |
[OpenJade] OpenJade 1.2.2 Released, Avi Kivity | Date | RE: processing character entities, Steffen Heinrich |
Month |