Thomas Morley <thomasmorle...@gmail.com> writes:

> Hi,
>
> the following works fine with current master (and every tested lily-version):
> #(begin
>  (define-markup-command (dummy layout props arg) (markup?)
>    (interpret-markup layout props arg))
>  (display-scheme-music (markup #:dummy "foo")))
> #(display "whatever")
>
> With guilev2 I get:
> $ lilypond-git-guile-2.2 atest-85.ly
> GNU LilyPond 2.21.0
> Processing `atest-85.ly'
> Parsing...
> fatal error: Not a markup command: dummy
>
> Not even the later 'display' is reached.
>
> Though this works:
> #(define-markup-command (dummy layout props arg) (markup?)
>    (interpret-markup layout props arg)
> #(display-scheme-music (markup #:dummy "foo")))
> #(display "whatever")
>
>
> I'm not able to track this down, anyone with some insight?

I think that Guilev2 may do the syntax form expansion concerning
"markup" before executing the define-markup-command when both are
contained in one begin form.  Macros are executed a bit differently in
Guilev2 than in Guilev1.

-- 
David Kastrup

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