Quoting quoted material fails

[Mats Bengtsson]

Hi,

This is probably more of a limitation than a bug, but should at least be 
documented. If you try to quote a voice that itself contains quoted 
material, the nested quote fails (without any warning message).

Here's a reasonably minimal example.

\version "2.23.3"

A = \fixed c' {c4 d e f | g f e d | c1 }
\addQuote "A" {\A }

B = \fixed c' {\quoteDuring "A" s1 | g1 | \quoteDuring "A" s1 }
\addQuote "B" {\B}

% The first measure that attempts to quote quoted material is empty:
C = \fixed c' {\quoteDuring "B" s1*2 | e1 }

\score{
<<
  \new Staff \A
  \new Staff \B
  \new Staff \C
>>
}

I propose to add a sentence under Known issues and warnings in 
http://lilypond.org/doc/v2.23/Documentation/notation/writing-parts#quoting-other-voices, 
saying,

"Quoting music that itself contains quoted sections does not work."

I would also be happy if the possibility to do nested quotes could be 
recorded as a feature request. I just typeset a concerto grosso, where I 
in the ripieni string parts quoted sections from the solo string parts 
and where the woodwind parts were almost identical to the ripieni string 
parts and i hence tried to quote these, which resulted in mostly empty 
music, to my great surprise and disappointment. Apart from such use 
cases, I would expect that it could a more common problem when adding 
cue notes using \cueDuring of parts that themselves contain quoted 
material.

   /Mats