Re: [frogs] Re: Add option to indicate frets by letters in tablature(issue164063)

[Carl Sorensen <c_sorensen@xxxxxxx>]

On 12/7/09 6:00 PM, "Carl Sorensen" <c_sorensen@xxxxxxx> wrote:

> 
> 
> 
> 
> On 12/7/09 5:40 PM, "Trevor Daniels" <t.daniels@xxxxxxxxxxx> wrote:
> 
>>> 
>>> You need to use a Scheme markup, not a lilypond markup.
>> 
>> Thanks Carl.  I had tried that earlier, and that
>> didn't work either.  The thing I was missing was
>> an eval-string function to cause the Scheme string
>> to be evaluated.  So, I've now got it working, but
>> the format is a bit convoluted.  The markup has to
>> be in scheme brackets in a string, which means
>> strings inside have to be escaped, like this:
>> 
>> fretLabels = #'("a" "b" "(markup #:italic #:smaller \"c\")")
> 
> Have you tried
> 
> fretLabels = #`("a" "b" ,(markup #:italic #:smaller "c"))
> 
> This worked for me.  Note that the character following the # is the backtick
> or accent grave character. When this expression is passed to Scheme, the
> (markup #:italic #:smaller "c") is evaluated (because it has a , before it)
> and the result of the evaluation (which is a markup) is stored in the list.
> Then that result is ready to be passed along to make-vcenter-markup.
> 

BTW, I used this list with the code already posted on Rietveld, so no other
modifications are necessary (of course it was fretLetterExceptions, not
fretLabels, in that code).

Thanks,

Carl



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