RhythmicStaff breaks annotate-spacing in 2.7.35

[Trevor Bača]

This snippet ...

%%%%%%%%% BEGIN BUG SNIPPET %%%%%%%

\version "2.7.35"

\paper {
   annotate-spacing = ##t
}

\new RhythmicStaff {
   c'4
}

%%%%%%%%% END BUG SNIPPET %%%%%%%%%%

... renders like this:

GNU LilyPond 2.7.35
Processing `0320.ly'
Parsing...
Interpreting music... [1]
Preprocessing graphical objects...
Calculating line breaks... [2]
Calculating page breaks...
FORMAT: error with call: (format #f "(~$<===,~$)" ===>+inf.0 -inf.0 )
        illegal character `i' in number->string

/Applications/LilyPond.app//Contents/Resources/share/lilypond/current/ly/init.ly:37:1:
error: GUILE signaled an error for the expression beginning here
#
 (if (pair? toplevel-scores)error in format

/Applications/LilyPond.app//Contents/Resources/share/lilypond/current/ly/init.ly:37:5:
error: syntax error, unexpected '(', expecting '='
#(if
     (pair? toplevel-scores)
error: failed files: "0320.ly"

On checking, bug was present at least as early as .29 and the error
disappears completely if you write a Staff in place of the
RhythmicStaff.


--
Trevor Bača
address@hidden