bug#63579: org-babal-lilypond fontification error

[Jonas Damm <mailing@jonas-damm.de>]

Thank you, I did.
Ihor Radchenko <yantar92@posteo.net> writes:

> Jonas Damm <mailing@jonas-damm.de> writes:
>
>> User-agent: mu4e 1.8.13; emacs 29.0.91
>> Example:
>>
>> Hi,
>> I am using org-babel to create music sheets with lilypond.
>> For some reason the fontification is not working anymore:
>>
>> [2. text/x-org]
>> #+begin_src lilypond
>>
>>   \relative c' {
>>     c d e f g
>>     }
>>
>> #+end_src
>
> This is a problem with lilypond:
>
> Debugger entered--Lisp error: (void-variable font-lock-reference-face)
>   (eval font-lock-reference-face t)
>   (#f(compiled-function (highlight) "Apply HIGHLIGHT following a
> match.\nHIGHLIGHT should be of the form MATCH-HIGHLIGHT, see
> `font-lock-keywords'." #<bytecode -0xf53eae0ec5f928c>) (0
> font-lock-reference-face t))
>   (font-lock-fontify-keywords-region 1 42 nil)
>   (font-lock-default-fontify-region 1 42 nil)
>   (font-lock-fontify-region 1 42)
>   (#f(compiled-function (beg end) #<bytecode -0x19f31ec42bd98447>) 1
> 42)
>   (font-lock-ensure)
>
> `font-lock-reference-face' is an obsolete variable that has been
> removed
> in Emacs 29.
>
> Please report this issue to Lilypond developers. See
> https://lilypond.org/bug-reports.html