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Re: Figured-Bass Bug Lilypond 2.9.18 on Windows

From: Han-Wen Nienhuys
Subject: Re: Figured-Bass Bug Lilypond 2.9.18 on Windows
Date: Fri, 22 Sep 2006 13:06:04 +0200
User-agent: Thunderbird (X11/20060913)

Trent Johnston wrote:


The figured bass bug I sent earlier on with version 2.9.17 remains the same in 2.9.18.

Since I was the sponsor of this feature it would be good if it worked how I had originally commissioned it.

Figures were able to placed above rests but in recent versions these are now ignored. The figured is excepted (ie. lilypond doesn't complain) but there is no figure printed in the output.

I've done some detective work and downloaded again each of the previous lilypond versions before 2.9.18. The last lilypond version that the figured bass work properly was 2.9.13. In version 2.9.14 the figured bass was not working at all. I sent a message to Lilypond User about this version which Mats then forwarded this onto Lilypond Bugs (http://lists.gnu.org/archive/html/bug-lilypond/2006-08/msg00044.html). Version 2.9.15 the figured bass was working again except that figures above a rest were ignored.

I hope this helps in tracking down the bug. I have several instrumental scores that I would like to now finish and print but can't until this issue is solved.


I think the problem is that due to Erik's stream changes in 2.9.something, now both Rest_engraver and Figured_bass_engraver listen to rest-events. The old behavior of \context FiguredBass was to cancel any running bassfigure (continuation line) when a rest was encountered.

When adding the bass figures to the Staff, rests would be caught by the normal Rest_engraver. Now both the rest_engraver and the figured_bass_engraver catch the rest-event. I could switch off the 'terminate continuation on rest' feature, but that would have other compatibility repercussions.

Erik, please advise on a strategy.


Han-Wen Nienhuys - address@hidden - http://www.xs4all.nl/~hanwen

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