Issue 1264 in lilypond: Enhancement: defining dynamics on-the-fly (with postfix syntax)

[lilypond]

Status: Accepted
Owner: v.villenave
Labels: Type-Enhancement Priority-Low Patch Syntax

New issue 1264 by v.villenave: Enhancement: defining dynamics on-the-fly  
(with postfix syntax)
http://code.google.com/p/lilypond/issues/detail?id=1264

Whilst it currently is possible to define new dynamics and attach them to  
notes, it cannot be done on-the-fly, eg.

  c1 \dynamic sffz

This is partly because the only way to pass a a text argument is by using a  
music-function, thereby forbidding postfix commands.  In the following  
pseudo-example, the dynamic will be attached to the next note instead of  
the previous one :

  c1 \dynamic #"sffz" d

A workaround is to use a dash before the Scheme-defined command:

  c1 -\dynamic #"sffz"

However, it's not an ideal solution. Implementing this more cleanly would  
require a parser modification, or, as David suggested, implement the  
ability to define postfix music-functions.

The discussion (and a patch) may be found on
http://lists.gnu.org/archive/html/lilypond-devel/2010-09/msg00148.html

See also related topics like issue 1066; LilyPond syntax will become much  
more consistent as we move to postfix functions everywhere it makes sense.