Re: Remove given tagged expression from given context

[Simon Albrecht]

On 19.07.2017 01:02, Pierre-Luc Gauthier wrote:
> Hello there,
>
> I know it may sound silly but :
> Is it possible to remove tagged expression from a whole context?
> Or does it not make sense at all?

The example below does indeed not make sense, because \removeWithTag and 
its friends are music functions. You can of course enclose the entire 
music expression inside a score with \removeWithTag, or you can even 
trick around with toplevel-music-functions to use it on _all_ the music 
any following score:

%%%%%%%%%%%%%%%%%%%%%
\version "2.19.64"
musicFunctionDummy = #(define-music-function (mus) (ly:music?) mus)
addToplevelMusicFunctions =
#(define-scheme-function (names) (symbol-list-or-symbol?)
   (let* ((name-list (if (list? names) names (list names)))
          (lookup-function (lambda (name) (let ((fn (ly:parser-lookup 
name)))
                                            (if (equal? fn '())
                                                musicFunctionDummy
                                                fn))))
          (fn-list (map lookup-function name-list)))
     (set! toplevel-music-functions (append fn-list 
toplevel-music-functions))))

removeTagged = \removeWithTag tagged \etc
removeOther = \removeWithTag other \etc

\addToplevelMusicFunctions removeTagged,removeOther

% insert music here ;-)

%%%%%%%%%%%%%%%%%%%%%%

But the first question should be: what are you trying to do?

Best, Simon


> MWE :
>
> \version "2.19.64"
>
> \score {
>    \relative c' {
>      \tag #'tagged \clef alto
>      c4 d e f g
>    }
>    \layout {
>      \context {
>        \Staff
>        %\removeWithTag #'tagged …plox?
>      }
>    }
> }
>
>
> Thanks