Re: balloonText and DoublePercentEngraver

[Werner LEMBERG]

Hello Lukas and Jean,


thanks a lot for your help.

> It seems that the correct time offset for the DoublePercentRepeat is
> at the beginning of the _second_ of the two bars.

Undocumented...  While adding a balloon is probably exotic, being able
to modify other properties of a `DoublePercentRepeat` grob is
important.  To do that, you have to know where it is timewise.

> This can be conventiently handled with \after [...]

This is a very elegant solution.  On the other hand, it feels like a
hack – is Joe User really expected to find a grob with `\after`?  I
would consider something like the following as 'natural':

```
\once\override DoublePercentRepeat.slope = #.3
\repeat percent 2 { e'2 e' e' e' }
```

Would it be possible to make `\repeat` accept such overrides, passing
them down to the various repeat grobs?


    Werner