Lyx files converted from 2.1 to 2.2 contain parbeak and latexpar separators that
would not appear if the lyx file was written in 2.2 from scratch. The script
removes latexpar separators and transforms parbreak separators into plain
separators. Then it displays a diff of the resulting pdf files (requires
diffpdf) for manual control. All lyx files shipped with lyx should be updated in
this way. See #10068.
example usage:
cd lib/doc
../development/tools/separator-convert.sh Math.lyx