On 13 Mar 2009, at 13:48, Valentin Villenave wrote:
I'd happily add an official enhancement request for that, but I need a
more precise and specific report (preferably with a minimal example).
Each \alternative might need a subsequence of the integer interval
[1...n] indicated. For example, suppose someone wanted truly large
repeat numbers, then it might be inconvenient to write them out all;
just take 1-3,5,7-8,10 to illustrate the feature. Is there a lilyPond
construct already that might express such a thing?
Then the feature that initiated this thread, the "hanging" last
alternative, it strikes me might just be a way to indicate that it is
empty. So a syntax like
\repeat volta {A B}
\alternative {C}
\alternative {}
\repeat volta {D E}
\alternative {F}
\alternative {}
G H I J ...
might suffice for that. - It seems me that the number after "volta" is
redundant, but might be kept as a check.
So combining these ideas, one might want to be able to write
\repeat volta {A}
\alternative 1,3 {B1}
\alternative 2 {B2}
\alternative 4-6 {B3}
\alternative {}
C
thus calling for
A B1 A B2 A B1 A B3 A B3 A B3 A C
typeset as
______ ______ ______ __
|1,3. ||2. ||4-6. ||7.
| ... | ... :|| ... :|| ... :|| ... |
A B1 B2 B3 C
With no terminating hook on the last case (7). Here, C is just what
follows. So if it is a part of a following \repeat volta ..., it
should look like
______ ______ ______ __
|1,3. ||2. ||4-6. ||7.
| ... | ... :|| ... :|| ... :||: ... |
A B1 B2 B3 C
Also, the number 7 could written in and the number 2 could be dropped:
\repeat volta 7 {A}
\alternative 1,3 {B1}
\alternative {B2}
\alternative 4-6 {B3}
\alternative 7 {}
C
That is, if not numbers follows an \alternative, just the next unused
number in the sequence 1, 2, 3, ... is filled in.
Would this not be backwards compatible with the current syntax and
semantics for the cases it covers?
Hans
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