Re: Chapter "Collision resolution"

[David Kastrup]

"Trevor Daniels" <address@hidden> writes:

> David Kastrup wrote Wednesday, January 12, 2011 3:40 PM
>
>
>> Polyphony is not required here, as a proper notehead merge will do
>> the
>> trick, like the fourth example shows.  The fourth example is correct
>> after shifting an _unrelated_ notehead.
>
> In LilyPond terms polyphony is required when two (or
> more) notes of different duration start at the same
> moment.  Two (or more) voices are then required to
> code this.  Merging noteheads takes place only between
> notes in different voices.
>
> LilyPond currently has a documented restriction that
> merging cannot take place if there are three or more
> notes in the same note column.  Here there are three,
> so the third note has to be moved out to permit the
> first two notes to merge.  See the Real music example
> in the Learning Manual where this is explained.

Is there an insurmountable technical reason for this restriction?  It
seems rather arbitrary.

-- 
David Kastrup