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List:       lilypond-bug
Subject:    Re: Lilypond 2.22 & 2.23 return 0 when a Scheme error occurs.
From:       Jean Abou Samra <jean () abou-samra ! fr>
Date:       2022-05-17 8:37:55
Message-ID: 319c14b7-5636-a73a-f09f-b41ecb9a6d8b () abou-samra ! fr
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Le 02/05/2022 à 08:50, Stéphane SOPPERA a écrit :
> Hi,
>
> This very basic program reproduce the issue:
>
> #(error "test")
>
> \relative {
>   c'1 |
> }
>
> With Lilypond 2.20, the compilation produces:
>
> Processing `scheme_err.ly'
> Parsing...
> scheme_err.ly:1:2: error: GUILE signaled an error for the expression 
> beginning here
> #
>  (error "test")
> scheme_err.ly:1: warning: no \version statement found, please add
>
> \version "2.20.0"
>
> for future compatibility
> Interpreting music...
> Preprocessing graphical objects...
> Finding the ideal number of pages...
> Fitting music on 1 page...
> Drawing systems...
> Layout output to `/tmp/lilypond-Cgqpyv'...
> Converting to `scheme_err.pdf'...
> Deleting `/tmp/lilypond-Cgqpyv'...
> test
> fatal error: failed files: "scheme_err.ly"
>
> and the//`lilypond` process returns 1.
>
> With Lilypond 2.22 & 2.23, the compilation produces:
>
> Processing `scheme_err.ly'
> Parsing...
> scheme_err.ly:1:2: error: GUILE signaled an error for the expression 
> beginning here
> #
>  (error "test")
> scheme_err.ly:1: warning: no \version statement found, please add
>
> \version "2.22.2"
>
> for future compatibility
> Interpreting music...
> Preprocessing graphical objects...
> Finding the ideal number of pages...
> Fitting music on 1 page...
> Drawing systems...
> Converting to `scheme_err.pdf'...
> test
> Success: compilation successfully completed
>
> and the `lilypond` process returns 0.
>
> Note that if the `-V` flag is used, then all versions of Lilypond fail 
> and in that case no PDF is generated at all.
> Here is a quick summary of the outputs of the different versions:
>
> | version | -V  | rc | PDF |
> |---------+-----+----+-----|
> |  2.23.8 | no  |  0 | yes |
> |  2.23.8 | yes |  1 | no  |
> |    2.22 | no  |  0 | yes |
> |    2.22 | yes |  1 | no  |
> |    2.20 | no  |  1 | yes |
> |    2.20 | yes |  1 | yes |
>
> Is this intentional that the newer versions don't fail anymore on some 
> Scheme errors?
> What is the rationale for this change?
>
> Thanks!

Thanks, opened

https://gitlab.com/lilypond/lilypond/-/issues/6344

Best,
Jean



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