Different minimum-length for broken spanner

[Mark Knoop]

Hi,

I'm creating a TextSpanner to indicate a gradual transition between 
instrumental techniques. In order that the left and right texts don't collide, 
my before-line-breaking callback sets the minimum-length property of the 
spanner to the sum of the width of the two markups.

This all works well, until the spanner is broken. Then, the first part retains 
this minimum-length, making it unnecessarily long. The problem is that once the 
spanner has been broken, it is too late to reset minimum-length.

Ideally there could be a property `minimum-length-before-break` to match 
`minimum-length-after-break` to address this? Or am I simply approaching this 
problem from the wrong angle?

See attachments for code and examples.

Thanks for any input,

Mark

transitionSpanner.ly
Description: Text document

transitionSpanner.pdf
Description: Adobe PDF document

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Mark Knoop