Re: Build failure with Scheme (again)

[Nicolas Sceaux]

Le 26 avr. 08 à 12:21, Graham Percival a écrit :

> On Sat, 26 Apr 2008 12:02:03 +0200
> Nicolas Sceaux <address@hidden> wrote:
>
> > Le 26 avr. 08 __ 11:49, Nicolas Sceaux a __crit :
> >
> > > Le 26 avr. 08 __ 04:28, Han-Wen Nienhuys a __crit :
> > >
> > > > It would be cool if we could define the markups like
> > > >
> > > > (define-markup-command (bla layout properties width arg) (number?
> > > > markup?)
> > > > ((line-thickness 0.0)
> > > >  (corner-radius 0.2))
> > > >
> > > > ..
> > > > )
> > > >
> > > > where this defines that the bla command uses line-thickness and
> > > > corner-radius, and automatically extracts them from properties.
> > > > We could then annotate the bla command automatically.
> > > >
> > > >
> > > > Nicolas, what do you think?
> > >
> > > Sorry, I didn't follow that thread. The aim is to automatically
> > > extract
> > > the properties a markup command is using, for the documentation,
> > > right?
> > > Then we could restrict this syntax change to builtin commands.
> > > Anyway, implementing this should not be a problem. I can have a
> > > look at it.
> >
> > Was not there also something about markup commands categories?
>
> Valentin is already working on giving
> define-builtin-markup-command an extra argument for "category",
> and when we build the list of markup commands for the docs, we'd
> group them by category.  He had a preliminary patch which worked
> (but was ugly) that I rejected a week or two ago.
>
> I don't know precisely what Han-Wen and Mats were talking about,
> though; it's beyond my understanding of the lilypond internals.

The first part is about having for instance:

(define-builtin-markup-command (triangle layout props filled) (boolean?)
  ((thickness 0.1)
   (font-size 0)
   (baseline-skip 2))
  "A triangle, either filled or empty. [...]"
  ..code using thickness, font-size, etc, extracted from props..)

Then the generated documentation would be:

*\triangle* /filled/ (boolean)

    A triangle, either filled or empty. [...]

    Used properties:
       thickness (0.1)
       font-size (0)
       baseline-skip (2)

While I'm at it, I was proposing to implement the category thing.

nicolas