Re: Help with a 2-argument markup command definition

[Robert Schmaus]

Am 11/19/11 4:07 PM, schrieb David Kastrup:
> Robert Schmaus<address@hidden>  writes:
>
> > Hi everyone,
> >
> > I'm trying to define a 2-argument markup command. the definition below
> > doesn't work, I get all sorts of errors when I call either
> > \jcStack{"x"}{"y"}
> > or
> > \jcStack "x" "y"
> > or
> > \jcStack #"x" #"y"
> >
> >
> >
> > #(define-markup-command (jcStack layout props jcHi jcLo) (markup? markup?)
> >      (interpret-markup layout props
> >        (markup #:smaller jcHi #:larger jcLo )
> >      )
> >    )
> >
> >
> > does anyone know what's my mistake here? and which one of the function
> > calls above would be the correct ones?
>
> The last variant will likely not start working until a recently proposed
> change of mine gets in.  The second variant would be fine, the first
> possibly not.
>
> Your mistake simply is that the markup macro accepts a markup, and you
> feed it two arguments.  You either need to create a markup-list command
> (and let it create a list of two markups), or you create a single
> line-markup from the two markups you have.  Or use concat or other ways
> of combining the two markups into one.
>
> If you don't want to think about all those intricacies, you can just
> side-step the issue of the internals, and use
>
> #(define-markup-command (jcStack layout props jcHi jcLo) (markup? markup?)
>      (interpret-markup layout props
>        #{ \markup { \smaller $jcHi \larger $jcLo } #}
>      )
>    )
>
> and then \markup will by itself be smart enough to create a \line-markup
> around the given markup list.

Hi David,

thanks for your reply! Yes, I should have thought of the #{ ... #} 
variant  myself ...

however, I still can't get it to work. I've used precisely your proposal 
above, and I get the following errors:

When I call the command as (\jcRaise is the 1-argument command that 
works fine):

\markup{\jcRaise{"7"}\jcStack "5" "9" }
I get
Preprocessing graphical objects...ERROR: Wrong number of arguments to 
#<primitive-procedure ly:text-interface::interpret-markup>


When I call the command as
\markup{\jcRaise{"7"}\jcStack{"5"}{"9"} }
I get
error: syntax error, unexpected '{'
        <c e gis bes dis'>-\markup{\jcRaise{"7"}\jcStack
                                                        {"5"}{"9"} }

Well you already said that this last variant might not work.
but I still don't see the error in the definition. Do you know what's 
happening?

Best,
Robert