If you are typesetting guitar-music with two voices you often need
in the lower voice a half note and the upper voice has for example
a figure consisting of eighth notes. The first note of both voices
have the same pitch. Usually the half note has a stem down and an
upper stem is integrated in the beam of the upper voice. In MusiXTeX
it's easy to get:
\zhl a\ibu0j0\hb0a\qb0{hj}\tqh0h
If you say in PMX
a23 //
a83 a+ c a /
the quarter-head of the eighth covers up the head of the half. How can
I get in PMX, what's so easy in MusiXTeX? Is it difficult to integrate
in PMX, Mr. Simons?
You could try an inline TeX solution like
\def\hB\{\let\oldqb\qb\let\qb\qB}
\def\qB{\hb\let\qb\oldqb}
Putting now \hB\ in front of the second line changes \qb into \qB which
will expand into \qh and restore \qb to its original value afterwards,
thereby expiring so to say. I didn't try this code, some \global s may
have to be inserted to circumvent local assignments due to grouping,
but in general it should work.
regards
Bernhard
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