Re: Suggestion to make sharps and flats persistent

[Fr. Samuel Springuel]

> On 20 May, 2020, at 9:43 AM, Paul McKay <address@hidden> wrote:
> 
> Todays thoughts are: when you specify \language, then part of what you are 
> doing is setting up the parser to understand which character sequence should 
> indicate an f-sharp. I would like to be able to temporarily reconfigure this 
> so that as well as mapping ‘fs’  to f-sharp you can ask it to map ‘F’ to 
> f-sharp. I imagine that the parser is a finite state machine and that at the 
> appropriate point it looks up a list. Normally this would say that ‘fs’ means 
> f-sharp (or ‘fes’ means f-sharp if you were in another language). I guess it 
> looks up a list of pitch names to check whether the current token is a pitch 
> as expected and, if so, which one. If that list might have ‘F’ added at the 
> beginning of the search order, then the parser would recognize the letter ‘F’ 
> as meaning the pitch f-sharp. Later on, you could ask to remove the ‘F’ entry 
> from that list. Removing it would automatically revert to the default 
> behaviour because the list would still contain the entry to say that ‘fs’ 
> means f-sharp. To avoid confusion, the request to add an item to the list 
> would have the form (newName, pitchNameInOriginalLanguage).

I’ve done something like this for transcribing solfege music (while retaining 
English note names for other purposes):

myNames = #(append (assoc-get 'english language-pitch-names)
  `(
    (do . ,(ly:make-pitch -1 0 NATURAL))
    (re . ,(ly:make-pitch -1 1 NATURAL))
    (mi . ,(ly:make-pitch -1 2 NATURAL))
    (fa . ,(ly:make-pitch -1 3 NATURAL))
    (sol . ,(ly:make-pitch -1 4 NATURAL))
    (la . ,(ly:make-pitch -1 5 NATURAL))
    (ta . ,(ly:make-pitch -1 6 FLAT))
    (ti . ,(ly:make-pitch -1 6 NATURAL))
  ))

solfegenglish = \myNames
#(ly:parser-set-note-names solfegenglish)


You should be able to adapt this for any particular set of note names you want.


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Fr. Samuel, OSB
(R. Padraic Springuel)
St. Anselm’s Abbey
4501 South Dakota Ave, NE
Washington, DC, 20017
202-269-2300
(c) 202-853-7036

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