Re: gregorian.ly omissions

[Trevor Daniels]

Bill, you wrote Tuesday, October 18, 2011 12:06 AM


> It would appear that the gregorian.ly file included in version 
> 2.15.14 /Windows/  of LP has some elements omitted - namely 
> episema : I haven't checked any others, I found this more or less 
> by accident when seeking to include the episema in a bit of 
> gregorian I was trying to reproduce.
>
> from the NM:-
> " ... \episemInitium ... \episemFinis "
> Is this a simple oversight or has something changed in the 
> fundamental coding?

The latter.  The implementation of episema was changed
in March 2010 to fix issue 189.  See
http://code.google.com/p/lilypond/issues/detail?id=189
and commit 8dd920d2143611a60bdaf82831613aae6342d2aa.

The change first appeared in 2.13.15.

> These are featured in gregorian.ly in 2.12.2, and using that file 
> instead of the 2.15.14 one seems to work with no obvious problems.

The definitions of \episemInitium and \episemFinis were
changed, and moved to ly/spanners-init.ly.  Episema
are now implemented by the Episema_engraver, which is
included by default in VaticanaVoice and
GregorianTranscriptionVoice, but not in any other voices.
Without the engraver episema will not work.

Trevor