On Fri, 6 Feb 2026 at 21:56, Udi Fogiel wrote:

The shipped box direction can be set explicitly, so we can get the warning even if bodydir and pagedir are the same:

\showthe\pagedir\showthe\bodydir \shipout\vbox bdir 1 {Test} \bye

This is LuaTeX, Version 1.22.0 (TeX Live 2025) restricted system commands enabled. (./test.tex

...

TLT. l.1 \showthe\pagedir \showthe\bodydir ? TLT. l.1 \showthe\pagedir\showthe\bodydir

? [1 warning (backend): pagedir differs from bodydir, the output may be placed wrongly on the page

I attached a diff withe a possible improvement.

I will check it but the code is frozen because the texlive is in build phase, see https://tug.org/texlive/ so we have to wait after the release (just remind me) . -- luigi

On Fri, 6 Feb 2026 at 21:56, Udi Fogiel wrote:

The shipped box direction can be set explicitly, so we can get the warning even if bodydir and pagedir are the same:

\showthe\pagedir\showthe\bodydir \shipout\vbox bdir 1 {Test} \bye

This is LuaTeX, Version 1.22.0 (TeX Live 2025) restricted system commands enabled. (./test.tex

...

TLT. l.1 \showthe\pagedir \showthe\bodydir ? TLT. l.1 \showthe\pagedir\showthe\bodydir

? [1 warning (backend): pagedir differs from bodydir, the output may be placed wrongly on the page

I attached a diff withe a possible improvement.

done. TexLive repo: ------------------------------------------------------------------------ r77943 | lscarso | 2026-02-18 17:11:12 +0100 (mer, 18 feb 2026) | 1 line LuaTeX: better warning when box_dir(p) != page_direction_par (thanks to Udi Fogiel) ------------------------------------------------------------------------ LuaTex repo: commit be905bae7a0e830c3f8b55d2d4ae73f3e87137d4 Author: Luigi Scarso Date: Wed Feb 18 17:08:48 2026 +0100 better warning when box_dir(p) != page_direction_par (thanks to Udi Fogiel) -- luigi