Re: Harmonics in tablature

[Lukas-Fabian Moser]

Hi,
> In Staceys example, I stumbled across the following strange thing 
> where \relative behaves strangely:
>
> mus = \relative c,, { \harmonicByRatio #1/4 <e\3 a\2>2. }
>
> <<
>   \new TabStaff
>   {
>     \set Staff.stringTunings = \stringTuning <a,,, e,, a,, e, a, cis>
>     \tabFullNotation
>     \mus
>   }
>   \new Staff \mus
> >>

Just to make this explicit: \harmonicByRatio and \harmonicByFret both 
fail if used for chords in \relative mode. The reason is the behaviour 
of calc-harmonic-pitch that can be seen in the attached file.

(calc-harmonic-pitch looks like a direct reimplementation of \transpose 
c' #pitch #mus, but it differs from \transpose in that in actually does 
something - and even "the right thing" - for music inside \relative if 
given only _one_ note.)

So I agree (if I understood your remark correctly) that \harmonicByFret 
and \harmonicByRatio should rather accept single pitches only.

But you're obviously also right in that the implementation of harmonics 
handling should be reconsidered because of the different ways they have 
to be handled in a) staves, b) tabstaves, c) midi. Maybe I can try 
something in that direction over the next few days, but I know this is 
going to be pushing my understanding of Lilypond and scheme programming 
to its boundaries :-).

Lukas

calc-harmonic-pitch-relative-fail.ly
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