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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
> <http://lilypond.org/doc/v2.19/Documentation/usage/writing-code-to-support-multiple-versions>
> 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