The (fragment of an) example below gives two bars of music, which will
be
displayed correctly by Lilypond. As there is a half on beat #4 in
measure
#1, which lasts 'til beat #1, measure #2, the next 'c' will be
(correctly)
set on beat #2, measure #2.
There IS a bar line between these two measures, ... but I wasn't able
to
make Lilypond to put a line break there... and that's my problem. So my
suggestion would be to put something like
"only at bar lines WHEN THERE IS A COMPLETE MEASURE PRECEEDING..."