I'm trying to engrave a highly repetitive piano part using repeats as much as possible to save page-turns, but I need to display the bar numbers as if the repeats were written out (other parts don't repeat). It seems to me that this raises three issues, to none of which have I found a solution in the manuals.
1) Notating the number of repeats automatically . One can do a markup of "3×" on the repeat bar, so it's not a major problem, but Lilypond doesn't seem to do this automatically, which is a bit of a shame.
2) Adjusting the bar count to take the repeated bars into account. For example, if an 8-bar phrase is repeated 4 times, the bar count after the end of the section is 33, rather than 9. Again, this can be done by setting the bar number, but it would be useful to have a computer do the arithmetic.
3) Displaying the multiple bar numbers. In the above example, displaying something like "1-9-17-25". Without this, rehearsals will be a bit fraught!