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Re: ly:version? unbound variable

From: David Kastrup
Subject: Re: ly:version? unbound variable
Date: Wed, 01 May 2019 19:40:03 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Stefano Troncaro <address@hidden> writes:

> Hi everyone! According to this page in the manual
> <>
> the function ly:version? should be implemented, but the example given fails
> with the error 'unbound variable: ly:version?' which suggests it's not. I'm
> running it in 2.19.83, was this function deleted and the documentation not
> updated?
> Copying the example here:
> #(cond
>   ((ly:version? > '(2 20))
>    (ly:message "This is code to run for LilyPond after 2.20"))
>   ((ly:version? = '(2 19 57))
>    (ly:message "This will only be executed with LilyPond 2.19.57"))
>   (else (ly:message "This will be executed in any other version")))
> Does anyone know what is happening?

They were never exported: they are defined using define, not
define-public.  Now _that_ would have been a feature worth a regtest!

David Kastrup

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