Re: [tablatures] bends: pre-implementation issues

[Marc Hohl <marc@xxxxxxxxxx>]

Carl Sorensen schrieb:
> On 1/4/10 5:38 AM, "Marc Hohl" <marc@xxxxxxxxxx> wrote:
>
>   
> > {[..]
> >
> > so with bends, I have to add the commands to the parser. Is this correct?
> >     
>
> Yes, you will need to add something to the parser, I believe.  It's because
> bends need to be spanners (they connect notes, so they cover multiple
> moments).
>   
Ok.
>   
> > If this is true, it yields to the second question. Would it be better to
> > create three new commands, like \bend, \releaseBend and \preBend, or to use
> > one indicator/command and let lilypond decide what to do?
> >
> >     
>
> I don't know enough about your plans to be able to answer this.
>   
I attached an example to my answer to Han-Wens mail. In measures
1 to 6, the is a bend/release bend combination, measure 7 is bend up
only, measure 9 is a single pre bend, and measure 10 is a pre bend followed
by a release bend.

The usage code in ly files should be easily understandable, so
I think I'll vote for \preBend, \bend and \releaseBend, but I don't know 
if it is
wise to define three parser commands if there is a possibility of using 
only one
(see below).
>   
> > I see two possible solutions: either
> >
> > e4 \bend f \releaseBend e2
> >
> > or
> >
> > e4 ^ f ^ e2
> >
> > The "^" sign isn't mandatory, but it would make sense, as the output looks
> > similar in this case. The form
> >
> >     
>
> I'm sorry, but you can't use ^.  That's already used to place markups,
> slurs, ties, etc. in an up direction.
>   
Yes, of course. It was just meant as a simple abbreviation.
Perhaps \^ might do the job? I mean, if I can use a symbol, then
I think it would be best to use *one* symbol for the whole bend stuff,
but if I have to use a word as a command, then I'd prefer to
use three different commands.
> On the other hand, if a bend is always between two notes, something like a
> tie symbol may work.   You might consider ~^ to be a bend between two notes.
>   
A bend will definitely be always between two notes.
>   
>
> You can do whatever you want in engravers.  I'm sure that you can make this
> stuff work, but the exact mechanism isn't clear to me now, because I don't
> have a picture in my mind of what you want the notation to look like.
>   
Perhaps it is a bit clearer now (?), but David will post some more
sophisticated examples of what should be doable with bends, so
perhaps clarification will have to wait until then.

Thanks

Marc