Hi Paolo, After some googling and tweaking I managed to make the counter you wished:
\version "2.19.83" #(define* (make-counter #:optional (cnt 0) (inc 1)) (lambda () (set! cnt (+ cnt inc)) cnt)) #(define serial (make-counter)) token = -\tweak output-attributes #`((id . ,(string-append "foobar_" (number->string (serial))))) \etc \relative { c'4 d8 -\token [ e ] f -\token [ g ] c,4 } I will test your snippet for modifying beams later! Thank you for the work you are doing. Hope this helps! Stéfano El mar., 17 dic. 2019 a las 19:23, Paolo Prete (<paolopr...@gmail.com>) escribió: > In addition, Stefano, If you have time, please try the snippet for tuning > the beams (second attachment). Any test of these things are very helpful > for me. > > On Tue, Dec 17, 2019 at 11:18 PM Stefano Troncaro < > stefanotronc...@gmail.com> wrote: > >> Hi Paolo, >> >> Look at this: >> >> \version "2.19.83" >> >> token = -\tweak output-attributes #'((id . "foobar")) \etc >> >> \relative { c'4 d8 -\token [ e ] f2 } >> >> That achieves half of what you want. Now, how to make "foobar" >> automatically increment I don't know, perhaps someone else can help with >> that. >> >> Hope that helps! >> Stéfano >> >> El mar., 17 dic. 2019 a las 19:06, Paolo Prete (<paolopr...@gmail.com>) >> escribió: >> >>> Hello all, >>> >>> In order to automate the reverse process of the lilypond+javascript >>> snippets (write the GUI modifications of the grobs to the .ly file) I need >>> to make the following code work: >>> >>> %%%%%%%%%%%%%%%%%%%%%%%%% >>> token = \tweak output-attributes #'((id . "foobar")) >>> >>> \score >>> { >>> { >>> a8 \token [ c' c' c'] >>> } >>> } >>> >>> %%%%%%%%%%%%%%%%%%%%%%%%% >>> >>> But it doesn't compile. >>> What's the right way to define the "token" variable? >>> >>> Note that I can compile on 2.19.84 (but not on 2.19.55) the following >>> code >>> >>> %%%%%%%%%%%%%%%%%%%%%%%%% >>> >>> \score >>> { >>> { >>> a8 \tweak output-attributes #'((id . "foobar")) [ c' c' c'] >>> } >>> } >>> >>> %%%%%%%%%%%%%%%%%%%%%%%%% >>> >>> In addition: how can replace "foobar" with a global variable (string + >>> number) that is incremented at each call of "token" ? >>> The ids must be: foobar_1, foobar_2 etc. >>> >>> Thanks, >>> Paolo >>> >>> >>> >>> >>>