Re: parser location inTab

[Aaron Hill]

On 2019-01-25 7:22 pm, Gack McShite wrote:
> Trying to clean up errors.  I see this pattern a lot, so I assume it
> should work.
>
> TrackAVoiceAMusic = #(define-music-function (parser location inTab) 
> (boolean?)
> #{
>    \tempo 4=106
>    \clef #(if $inTab "tab" "treble_8")

What stands out to me is the extra $.  Since the # already switches 
context from LilyPond syntax to Scheme, you need only write "inTab" in 
that case.  Otherwise to Scheme, "$inTab" is a different symbol than 
"inTab".

Side note: It is a common convention in Scheme that Boolean variables 
and functions end in a question mark.  Certainly not required, but you 
might consider using "inTab?".


-- Aaron Hill