Hi Gilles,
Unforced breaks can depend on previous margin settings,
possibly making the numbering wrong when the user reruns
the compilation with different settings.
Of course that *can* happen… but it doesn’t have to. In all my
scores, once the layout is fixed, I no longer *ever* let Lilypond
make
layout choices: I turn off auto-breaking and manually force-break all
lines and pages, i.e., page numbers in my scores never change [after
that point].
Why “rather”? Why not “in addition to”?
Because (I guess that) the former will not likely produce
the expected output, particularly when there are many pages.
Unless you mean that the typesetting should only rely on
forced breaks.
No… I’m saying I don’t understand why there cannot be options — then
users (like me) who control breaks completely can do one thing, and
those who don’t can do another.
That’s one of my favourite philosophical features about Lilypond: it
so often allows the user to choose, offering many parameters for
adjustment (with reasonable defaults).