Of all the things in Lilypnd I find barline syntax perhaps the most baffling. What I want is a double barline to end an 8 bar intro section at the end of a line (I am using \break to force 4 bars to a line) and then a repeat barline at the start of the next line where the head begins. I’ve tried every combination I can figure out from https://lilypond.org/doc/v2.24/Documentation/notation/list-of-bar-lines without success. I get either no barline at all at the end of the intro, or a plain carline and no repeat at the start of the head. I am very curious as to what I am doing wrong and any suggestions happily received. This sort of thing is common engraving practice, so I must be missing something obvious.
Thanks!