Re: How to get warnings for unused parts of a file?

[Omid Mo'menzadeh]

Thank you for your reply. This is working, but like this:

main = #(if (not (defined? 'is-loaded-file))
  #{
    \score { \vocal }
  #}
)

\main

Any idea why it wouldn't work without defining the main variable? It's fine for me, but I don't get why the following snippet does not work for me:

#(if (not (defined? 'is-loaded-file))
  #{
    \score { \vocal }
  #}
)

I'm using Lilypond 2.22.1 if that makes a difference.

On Tue, Sep 14, 2021 at 12:44 PM Leo Correia de Verdier <leo.correia.de.verdier@gmail.com> wrote:

There might be more elegant ways to do it (there probably is), but I have a variable I define in my output files, is-loaded-file and then I can use #(if (defined? 'is-loaded-file) … ) in the definition files to test. This requires a situation where there’s a clear separation between ”definition files” and ”output files”, but works quite well for me.


> 14 sep. 2021 kl. 09:52 skrev Omid Mo'menzadeh <omid.mnzadeh@gmail.com>:
>
> Hello all. This might be a weird thing to seek, but here is the scenario:
> I have several files defining (but not using) different parts of the score, which other files use to construct several output types.
>
> But the problem is the command `lilypond -l WARNING -o /path/to/file.ly` does not show a warning for the following example file:
> ghigh = \relative c {
>   \clef "treble_8"
>   \time 4/4
>   \voiceOne
>   c2 |
> }
>
> It does, if I include the following part at the end of the file:
> \book {
>   \ghigh
> }
>
> But the problem is that when I include it in another file, I get an extra output!
>
> A possible solution could look like an `if __name__ == "__main__"` clause in Python, but I don't know if we have a similar variable available in Lilypond.
> Thanks in advance,
> Omid