Re: Catch direction operators

[David Nalesnik]

Hi Ming,

On Sun, Sep 29, 2013 at 8:37 AM, MING TSANG <address@hidden> wrote:

I was following the caption subject in lily user list. I run the following (copy from the lists).  I got error, please see the log at the end of lily code.

Thanks,

Ming

%lily code starts %%%%%%%%%%%%%%%%%

\version "2.17.27"

colorizeDir =

#(define-music-function (parser location item)

(symbol-list-or-music?)

(define (grob-colorize-dir grob)

(let ((ev (event-cause grob)))

(case (ly:event-property ev 'direction)

((1) red)

((-1) blue)

Remove one of the parentheses at the end of this line:

 

(else '())))))

[...] 

--David