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Re: Note for manual


From: Erik Sandberg
Subject: Re: Note for manual
Date: Wed, 22 Feb 2006 13:26:16 +0100
User-agent: KMail/1.8.3

On Tuesday 21 February 2006 09.06, Graham Percival wrote:
> On 20-Feb-06, at 7:12 PM, Steve D wrote:
> > The graphical example doesn't seem to accurately illustrate the code
> > above it. The stems for notes on the middle line of the staff all point
> > down, despite "\override Stem #'neutral-direction = #up" (or #down).
>
> Thanks!  BTW, such reports can be sent directly to the bugs list.

Not sure if it is a bug: neutral-direction is very seldom used, with the new 
stem direction interpolation feature (see NEWS). I guess only very lonely 
notes should be affected by neutral-direction. I think neutral-direction 
should work as before if you remove the Melody_engraver (untested).

Han-Wen, the intended semantics of neutral-direction are a bit unclear to me. 
I have two guesses:
1. If melody spanner can't decide which direction to use, use 
neutral-direction instead. This seems to be the intended semantics, from 
looking at melody-spanner.cc, but it doesn't seem to work. Try e.g.
{ \override Stem #'neutral-direction = #up b'4 }
2. neutral-direction should override melody-spanner's decisions. I suppose 
this is the behaviour that most people would expect.

-- 
Erik




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