Thank you David, this explains me what I didn't understand.
It turned out that somehow I was looking at a bad parser.yy.
Actually I'm not running/debugging the C code, but instead only reading it
(and porting some of the parsing code to Java).
Bertalan
On Wed, Oct 26, 2011 at 7:26 AM, David Kastrup <d...@gnu.org> wrote:
> "Bertalan Fodor (LilyPondTool)" <lilypondt...@organum.hu> writes:
>
> > Dear LilyPond devs,
> >
> > I have a problem with the LilyPond markup parsing, which prevents me
> > to finish my new release of LilyPondTool.
> > Could you help me a bit on that?
> >
> > I have this ly file
> > ------------------
> > dot = \markup {
> > "q" \musicglyph #"accordion.dot"
> > }
> >
> > { c^\dot }
> > ------------------
> >
> > When the markup is parsed, it will become:
> > ( "q" (musicglyph "accordion.dot"))
> > through the rules: markup_braced_list -> markup_list -> markup_top ->
> > full_markup -> identifier_init
> >
> > This really makes sense, but please correct me if I'm wrong.
>
> You are wrong. \markuplines (soon to become \markuplist) takes this
> markup list verbatim. \markup, however, wraps it in a line-markup. Put
> the following after your assignment:
>
> #(begin)
> #(display dot)
>
> This produces:
>
> (#<procedure line-markup (layout props args)> ( q (#<procedure
> musicglyph-markup (layout props glyph-name)> accordion.dot)))
>
> > Now when I'm referring to it in c^\dot, the following code is run:
> >
> > if (Text_interface::is_markup (sid)) {
> > ....
> > return MARKUP_IDENTIFIER;
> > } else if (Text_interface::is_markup_list (sid)) {
> > ....
> > return MARKUPLINES_IDENTIFIER;
> > }
> >
> > The result of this must be MARKUP_IDENTIFIER (as only those can be
> > used as direction_reqd_event -> gen_text_def -> full_markup
> >
> > But if I look in Text_interface.isMarkup, it will just do the
> > following:
> >
> > return (scm_is_string (x)
> > || (scm_is_pair (x)
> > && SCM_BOOL_F
> > != scm_object_property (scm_car (x),
> > ly_symbol2scm ("markup-signature"))));
> > }
> > So my value, ( "q" (musicglyph "accordion.dot")) will not be
> > considered as a markup, but instead a markup list, so I'm getting a
> > parse error.
> >
> > Can you help me where I misunderstand the code?
>
> Have you actually tried your code? Works fine here.
>
> --
> David Kastrup
>
>
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