"Cornelius C. Noack" wrote:
>...
> [Don wrote]
> > (5) Alexander's solution does not give the proper positioning if used in
> > the middle of a bar. That's because the "way-after" grace note is
> > handled differently at the end of a bar, where it is inserted from
> > within a \znotes, which sets \noteskip=0pt. When used in the middle of
> > a bar, \noteskip is not zero and \caesura offsets the character by
> > .5\noteskip as it normally does.
> >
> > Since this has come up several times already, I suppose I should
> > consider including the \caesura as an ornament in PMX (even though I've
> > never had occasion to use it myself).
>...
> Don: 1) your point (5) is well taken; but then, in the middle of a bar,
> in-line use of the regular \caesura works flawlessly, so there's
> no need to bother with any extra gimmicks,
> 2) I strongly support the idea to include \caesura in PMX
> (in whateverwhich way, as an ornament, or in a separate option
> to Gw...). It's important not only as a help for performers, but
> also as a way of describing a composers intentions; the most
> famous example I can think of is in the last movement of
> Stravinskys Symphony of Psalms ("laudate, laudate, laudate
> Do -- mi -- \caesura num".
>
> But if/when you make it available in PMX, please remember to
> include \cbreath as well; I myself found \cbreath
> [in the form of \def\Sbreath{\adv@box{\raise\si@\internote
> \hbox\@to\noteskip{\hss\bigfont'\hss}}}
> instead of the regular musixtex
> \def\cbreath{\adv@box{\raise\si@\internote
> \hbox\@to\noteskip{\hss\BIGfont'\hss}}} ]
> more esthetically pleasing than a \caesura in most cases,
Questions about spacing:
1. What should the default location of a caesura really be? In PMX as
an ornament, it would be straightforward, and similar to musixtex, and
wouldn't require special end-of-bar treatment, to put it 1/2 \noteskip
BEYOND the current note. The ornament command would follow the note (as
usual) and in that sense would be quite natural. In the spirit of other
PMX ornaments, the user would be able to tweak the position.
2. Re \cbreath, doesn't \adv@box add horizontal space? If this symbol
means what I think it does (take a breath), then I don't see why it
needs extra space. I would propose positioning it exactly the same way
as \caesura.
> 3) when I tried Alexanders trick, I first inserted the redefined
> \def\grcu#1 (by the way, why is there an argument ???)
because when PMX writes the command, it puts in an argument. Even
though the re-defined macro doesn't use the argument, it must "eat" it
(as Werner used to say); otherwise TeX would get very confused.
> in the
> preamble of pmx, instead of fiddling with musixtex.tex; but that
> was somehow completely ignored: I got a regular way-after grace
> note instead. It's not so important; but: why ?? (When I change
> replace the \def in musixtex.tex, it works).
A TeXpert could explain this better than I, but I know if you do a \def
or \let inside something TeX regards as an inner module (in a sense that
is very unclear to me, except I know a \notes group counts as one), then
the definition will not normally apply outside that module. However,
the definition can always be made "global" by using \gdef instead of
\def, and \global\let instead of just \let. Whenever TeX seems to be
ignoring one of my definitions, I start sprinkling around \global's and
\gdef's until it comes out right. I find this empirical approach
adequate; trying to reason it out precisely can be very confusing
especially if you have \def's within \def's.
--Don Simons
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