convert-ly rule for tocItem
Timothy Lanfear writes: (https://lists.gnu.org/archive/html/bug-lilypond/2020-08/msg00020.html)
Applying convert-ly (2.21.5) to this file produces illegal output with the first double quote escaped by a backslash
\version "2.20.0"
\tocItem "Score A" \score { { a'1 } }
Output
\version "2.21.2"
\tocItem \markup "Score A" \score { { a'1 } }
(input syntax for \score
fixed by me)
Edited by Jonas Hahnfeld