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Re: alpha test, horizontal spacing


From: Jan Warchoł
Subject: Re: alpha test, horizontal spacing
Date: Sat, 12 Feb 2011 12:04:10 +0100

2011/2/12 Trevor Daniels <address@hidden>:
>
> Jan Warchoł wrote Saturday, February 12, 2011 9:25 AM
>
>> I agree too, but in my opinion it's a less important problem than the
>> one marked in red in the attachment. (However, it was present in
>> 2.12.3 too).
>> The natural on c is perhaps moved because of the dot on f, but i don't
>> think it should be moved this way.
>
> Agreed.  Although two almost identical situations are typeset correctly
> in the same example, with the accidental sliding neatly over the dot.
>
> This must be a bug, so copying to Bug list for bug squad to process.

I think i have an idea how to explain this bug.
I suppose it happens because LilyPond is not aware that the dot is in
voiceTwo context (and therefore lower than usual).
compile this:

{ g'4.*1/32 d''!32 g'4.*1/32 e''!32 }
{ \voiceTwo g'4.*1/32 \voiceOne d''!32 \voiceTwo g'4.*1/32 \voiceOne e''!32 }

In the upper line, the first accidental (on d'') is too low to move
left (it would collide with the dot). The second accidental (on e'')
is high enough to be moved over dot. Everything fine here.
Now in the second line the music is the same except that dotted notes
are in lower voice. This makes the dots move down, they are a whole
staffspace lower. However, Lily fails to notice that, and engraves the
naturals exactly like in the upper line.

cheers,
Janek



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