[MEI-L] Different <expansion> versions within <choice>?

[Craig Sapp]

One thought about the expansion list, such as:

<choice>
         <expansion xml:id="expansion-full" plist="#A #A1 #A #A2 #B #B1
               #B #B2 #C #C1 #C #C2 #A #A2 #B #B2">
         <expansion xml:id="expansion-minimal" plist="#A #A2 #B #B2 #C #A
#A2
               #B #B2">
         <expansion xml:id="expansion-arrau1956" plist="#A #A1 #A #A2 #B
               #B2 #C #C2 #A #A1 #A #A2 #B">
</choice>

It would be useful to have a standardized method of identifying what you
are IDing as "expansion-full" and "expansion-minimal".  In other words, the
performance sequence when taking repeats as instructed in the score and not
taking repeats.  Special labeling of these two expansion cases would be
useful for analytic purposes such as determining the duration of Beethoven
sonatas when taking written repeats or with no repeats.  And these special
cases should not be encoded only in the structure of the expansion IDs.
That is the main purpose of the expansion at type in the Humdrum conversions,
where the default expansion indicates the performance sequence taking
repeats as written, and "norep" is the minimal performance sequence (with
"norep" meaning "no repeats").  The norep expansion is particularly useful
for doing computational analysis of the score, since the repeated material
is usually not needed.

-=+Craig
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