Re: More than 5 nested tuplets of large value hangs Lilypond permanently

[Urs Liska]

Am 13.11.2016 um 07:28 schrieb mclaren:
> \version "2.18.2"
>
> <<
>
> \new Staff {
>     \clef "treble"
>
> % This is a Nancarrow-style 1% acceleration. It hangs Lily permanently with
> message "Preprocessing graphical objects..."
> % One fewer nested tuplet runs without error. To prove this, comment out
> next line, and uncomment the line after that.
>  \tuplet 100/99{a8 \tuplet 100/99{a8 \tuplet 100/99{a8  \tuplet 100/99{a8
> \tuplet 100/99{a8 \tuplet 100/99{a8}}}}}}  
>
>
> %\tuplet 100/99{a8 \tuplet 100/99{a8 \tuplet 100/99{a8  \tuplet 100/99{a8
> \tuplet 100/99{a8}}}}} 
> }    
>

I have reformatted the example to make it more accessible and readable.
I have the impression this actually hits an internal calculating limitation.

Could please someone check this?
And if that's so:
a) should this be documented (in
http://lilypond.org/doc/v2.19/Documentation/notation/writing-rhythms#tuplets)
b) is there a way to catch this type of issue and abort with an error
instead of hanging?

Urs

\version "2.18.2"

\new Staff {
  \clef "treble"

  % This is a Nancarrow-style 1% acceleration. It hangs Lily permanently
with
  % message "Preprocessing graphical objects..."
  % One fewer nested tuplet runs without error. To prove this, comment out
  %next line, and uncomment the line after that.
  \tuplet 100/99 {
    a8 \tuplet 100/99 {
      a8 \tuplet 100/99 {
        a8 \tuplet 100/99 {
          a8 \tuplet 100/99 {
% Prepend the next line with an additional percent to uncomment the
fifth tuplet
%{
              a8 \tuplet 100/99{
                a8
              }
%}
          }
        }
      }
    }
  }
}


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