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List:       lilypond-user
Subject:    Re: Feed list of strings into markup command expecting markuplist?
From:       Lukas-Fabian Moser <lfm () gmx ! de>
Date:       2020-03-30 12:09:30
Message-ID: 62c7eaa2-dbaa-b130-ec47-6cfc3e7dd3e5 () gmx ! de
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Hi David,
>> What is the scheme way to construct a markup list (out of a list of
>> strings, for example) that can be passed to a markup command?
> A list of strings is a markup list.  However, not every markup list is a
> list of strings, so you might be on the safer side by using markup list
> processing commands rather than string processing commands.
Yes, sure. In my use case, the function-taking-markup-list (where I 
simply used string-concatenate) is "given by the opponent", so to speak...
> That's more a case of
>      Known issues and warnings
>      .........................
>
>      The markup-list argument of commands such as ‘#:line', ‘#:center', and
>      ‘#:column' cannot be a variable or the result of a function call.
>
>           (markup #:line (function-that-returns-markups))
>
>      is invalid.  One should use the ‘make-line-markup',
>      ‘make-center-markup', or ‘make-column-markup' functions instead,
>
>           (markup (make-line-markup (function-that-returns-markups)))

Aaaargh. I _knew_ I was missing something fundamental. Thanks much!

Best
Lukas


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