Strange (buggy) Scheme assignment

[Bertalan Fodor (LilyPondTool)]

Hi,

in property-init.ly I found this: aikenHeads = \set shapeNoteStyles = 
##(do re mi fa #f la ti)
That seems to be a vector definition in Scheme: #(do re mi fa #f la ti)
However, it is not a valid Scheme expression, at least according to its 
formal grammar and the online Scheme interpreter, 
http://sisc-scheme.org/sisc-online.php

What is your opinion?

Thanks,

Bert


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