Re: [Lilypond-auto] Issue 3993 in lilypond: undocument make-simple-closure

[lilypond]

Comment #2 on issue 3993 by address@hidden: undocument  
make-simple-closure
http://code.google.com/p/lilypond/issues/detail?id=3993

The best documentation I see is in misc/ChangeLog 2005-11-02:
* lily/simple-closure.cc: new file. Smob type that allows "grob
  member functions",
      (ly:make-simple-closure FUNC A B)
  is evaluated as (FUNC grob A B). This allows chaining of callbacks
  in various ways.

This is more difficult to use than a Scheme lambda(g), so we should remove  
make-simple-closure from 'extending'.   Removing it from define-grobs.scm  
would also be helpful and fairly easily.

We should keep the definition of make-simple-closure, because users will  
have followed the old documentation examples.

The underlying C implementation is still used in lily/grob-closure.cc, to  
support building composite Scheme functions ('chained callbacks') from the  
C code.

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