> Updating to 2.26.0 (using Frescobaldi’s preferences) broke my use of
> the lilyjazz font set. [...]
I don't know the Frescobaldi stuff, however, ...
> [...] So I tried commenting "\include lilyjazz.ily" out and using:
>
> \paper {
> #(set-paper-size "letter")
> indent = 0.0
> ragged-last = ##f
>
> #(define fonts
> (set-global-fonts
> #:music "LilyJAZZ"
> #:brace "LilyJAZZ"
> #:roman "Lilyjazz-text"
> #:sans "Lilyjazztext"
>
> ))
>
> }
>
> This is copied straight out of the documentation with the font names
> changed.
... this you got wrong: the syntax for setting fonts is different with
version 2.26 – please always check what has changed!
https://lilypond.org/doc/v2.26/Documentation/changes/text-and-font-improvements
Werner