Re: "counting-numbers" above bars called with \repeat unfold

[Thomas Morley]

Hi David,

2012/1/28 David Nalesnik <address@hidden>:
[ ... ]
>> A little offtopic (might be worth another thread):
>> I noticed your engraver.
>> Learning how to programm my own scheme-engravers is top on my
>> wish-list. So I'm very interested to study all succesfull attempts.
>> (BTW Did you finish your box-engraver?)
>
>
> I've given up on the box engraver for the moment, but the engraver I just
> contributed for drawing glissandi between fingering numbers seems to work
> alright: http://lists.gnu.org/archive/html/lilypond-user/2012-01/msg00710.html
>
>>
>> I found a little tutorial
>> here:
>> http://lilypond.org/doc/v2.15/Documentation/contributor-big-page#engraver-tutorial
>> This seems to be more for the work with C++ but I guess the principles
>> are equal. Do you know about others, more scheme-orientated?
>
>
> I haven't found a tutorial for Scheme engravers (which doesn't mean one
> doesn't exist!) and whatever I know comes from the CG and the examples I've
> found.  Besides the engravers which Neil has contributed on the user list,
> there are a number of engravers to study: among the regression tests; the
> two snippets at
> http://lilypond.org/doc/v2.15/Documentation/snippets/contexts-and-engravers;
> Nicholas Sceaux's engraver for Baroque ornamentation
> at 
> https://github.com/nsceaux/nenuvar/blob/master/common/side-ornementations.ily.
>  These are the ones I know of.
>
> (One thing I find confusing is the order in which the various "methods" are
> called,  Drawing on the
> example at http://lilypond.org/doc/v2.15/input/regression/9d/lily-2181c892.ly 
>  I've
> found it very helpful to print moments to the log, or add a counter which
> increments as methods are called in turn.)

I finished my first own scheme.engraver. :)
It' a very simple one, but it should give me a starting point.

Many, many thanks for all your help!!

Best,
  Harm