Lilypond: how to engrave a double bar at "Fine" when a \repeat statement follows

Question

Under Lilypond 2.18, the following does not work as expected:

\version "2.19.45"

{
g b c r-"Fine" \bar "|." \break
\tempo "Trio"
\repeat volta 2 {
c a f f }
}

The double bar at "Fine" fails to appear. The line closes with a regular bar.

I saw the discussion at Rendering second ending closing bar when followed by another repeat in Lilypond, and the hint in the manual to use \bar ".|:-||". However, no variation of the above yields the desired outcome.

Answer 1

This problem appeared in a multi-staff score. Usage of \repeat was not uniform across staffs. When correcting this, the closing double bar printed correctly.

Answer 2

As of LilyPond v2.23, there are new ways to enter repeats and related structure, including some barlines.

This page of the documentation explains the new syntax:
1.4.1 Long repeats

\version "2.23.6"
{
    \repeat segno 2 {
        g b c r |
        \volta 2 {
            \fine
        }
        \break
        
        \section
        \sectionLabel "Trio"
        \repeat volta 2 {
            c a f f |
        }
    }
}