Erik Sandberg wrote:
it's possible, but you have to have extra error checking to catch things
like
\transpose { f } \lyrics { bar } { ..victic-music.. }
What if we just define transpose using something like
transpose = #(def-music-function .. (ly:pitch? ly:pitch? ly:music?) .. )
?
I think this would catch the above with something like
wrong type for argument 1. Expecting pitch.
which IMHO even is better than the current
Unexpected '{'
yes, but a ly:pitch? object is a C++ Pitch object, which is different
from Music. So you would define transpose as
(ly:music? ly:music? ly:music?)
and check that the first 2 arguments are event-chords with a single
noteevent inside. Right now, you cannot define it as
(pitch, pitch, music)
since lily interprets
\transpose c d {..stuff..}
as
\transpose c4 d4 {..stuff..}
where c4 and d4 are in fact EventChords.
--
Han-Wen Nienhuys - [EMAIL PROTECTED] - http://www.xs4all.nl/~hanwen
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