Dear Don,
I cannot reproduce the behaviour, i rather see the error at \shake and this
could be solved by putting it between {..} (for doing this i use the \relax
command).
This are the tex lines from the PMX run
\pnotes{2.83}\qu c\Coda{'g}\qu d\qu e\qu f\en%
\pnotes{2.83}\qu c\coda{'g}\qu d\qu e\qu f\en%
\pnotes{2.83}\qu c\shake{'g}\qu{`d}\qu e\qu f\en%
\pnotes{2.83}\qu c\shake{'g}\qu d\qu e\qu f\en% ---> this one runs away
\pnotes{2.83}\qu c\relax{\shake{'g}}\qu d\qu e\qu f\en% --> this solves it
\pnotes{2.83}\qu c\relax{\coda{'g}}\qu d\qu e\qu f\en%
I used pmx270
Andre
==============
1 1 4 4 0 6 0 -1
1 1 20 0
t
./
w180m
Ap
%
c44 \Coda{'g}\ d e f /
c44 \coda{'g}\ d e f /
c44 d ot e f /
c44 \shake{'g}\ d e f /
c44 \relax{\shake{'g}}\ d e f /
c44 \relax{\coda{'g}}\ d e f /
===================
-----Oorspronkelijk bericht-----
From: Don Simons
Sent: Friday, April 05, 2013 5:31 PM
To: 'Werner Icking Music Archive'
Subject: [Tex-music] Adventures with \coda
I'm trying to respond to the request to get PMX to do coda symbols. My plan
is to do it more like an ordinary ornament than I did segno, so each
instance of "oC" in PMX will only lead to a single coda symbol rather than
one in every staff. That would let you tweak the position of each symbol
independently.
In the process I've come across some weirdness in the behavior of \coda as
defined in musixtex.tex. My first test of my new PMX coding, with input "c44
d oC e f /", produced
\pnotes{2.83}\qu c\coda{'g}\qu{`d}\qu e\qu f\en%
as expected. Compare this to what I got with just "ot" instead of "oC":
\pnotes{2.83}\qu c\shake{'g}\qu{`d}\qu e\qu f\en%
Looks the same except for the ornament name, right? Well, it doesn't have
the same effect, because in the one with \coda, the octave change character
on g is not respected on the following notes, and they come out an octave
too low. I've looked at the definitions in musixtex.tex, and see that \coda
is defined differently so as to give an automatic horizontal offset from
where it is entered. But somehow that more complicated definition shields
the rest of the world from the octave change symbol in the argument of
\coda.
Since I refuse to revisit and revise PMX's tried and true pitch level
tracking just to accommodate this odd behavior of \coda, my tentative plan
is to define a new coda macro \pmxcoda (in pmx.tex) that handles pitch
levels the same as \shake. I would probably do away with musixtex's
automatic re-positioning, but you could still manually shift it vertically
or horizontally. Any objections? And if there are objections, i.e., if you
want to preserve musixtex's automatic repositioning of the coda symbol, then
please suggest an alternate way of writing musixtex's definition of \coda so
it doesn't hide the octave shifts from later commands.
PS: This complication validates my decision to postpone implementing this
until after releasing version 2.7.
--Don
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