Re: Help, simple music function not compiling

[Xavier Scheuer]

On 29 January 2011 23:23, Eric Dedieu <address@hidden> wrote:
>
> Hi lilypond helpers,
>
> Here is a small program that does not compile:
>
> -----------------------------------
> \version "2.12.3"
>
> %% the function that will fail
> tempoMarkEqual =
> #(define-music-function (parser location before after)
>  (string? string?)
>  #{
>  \mark \markup \tiny { \note $before #1 = \note $after #1 }
>  #} )
>
> %% example begins here
> {
>  \time 2/4
>  re'2
>  |
>  %% this works well
>  \mark \markup \tiny {\note #"8" #1 = \note #"8" #1 }
>  re'2
>  |
>  %% this is an attempt to get the same result with a function
>  \tempoMarkEqual #"8" #"8"
>  re'2
> }
> ------------------------------
>
> The first \mark command works well, but the function fails with:
>
> <string>:2:30: Error : syntax error, unexpected STRING_IDENTIFIER,
> expecting SCM_IDENTIFIER or SCM_TOKEN
>  \mark \markup \tiny { \note
>                              \lilyvartmpb #1 = \note \lilyvartmpc #1 }
>
> What did I miss ?

Use

tempoMarkEqual =
#(define-music-function (parser location before after)
 (string? string?)
 #{
 \mark \markup \tiny { \note #$before #1 = \note #$after #1 }
 #} )

with a '#' before "$before" and "$after", it works.

Par contre pour les explications je passe la main...

Cordialement,
Xavier

-- 
Xavier Scheuer <address@hidden>