Henri Menke

@Mo-Gul I've put some stuff in place so that you can add options to the Lua examples. A table of examples can be converted as such: ```diff - examples =...

Aha! Another `\iftikz@shapeborder` issue. Related #420

Resources allocation for the current page also takes place in `shipout/background` but is ordered before your drawing. I don't know whether it's possible to reorder them.

Something like this ```patch diff --git a/tex/generic/pgf/utilities/pgfutil-latex.def b/tex/generic/pgf/utilities/pgfutil-latex.def index a21f3b4d6..a9d97b2fc 100644 --- a/tex/generic/pgf/utilities/pgfutil-latex.def +++ b/tex/generic/pgf/utilities/pgfutil-latex.def @@ -124,11 +124,12 @@ \let\pgfutil@abe\pgfutil@empty% \pgfutil@ifl@t@r\fmtversion{2020/10/01}{% - \AddToHook{shipout/background}{% + \AddToHook{shipout/background}[pgf]{% \put(\hoffset-1in,\voffset-1in){% \pgfutil@abe\unhbox\pgfutil@abb\pgfutil@abc\global\let\pgfutil@abc\pgfutil@empty }% }% +...

Yes, it looks like the pdftex and luatex driver unconditionally allocate these resources.

You `LaTeX_logo.pdf` is broken. When I feed it through Ghostscript ``` gs -o LaTeX_logo_fixed.pdf -sDEVICE=pdfwrite LaTeX_logo.pdf ``` and then use `LaTeX_logo_fixed.pdf` it shows fine.

> how can I check if a pdf is broken? When included PDFs don't work correctly I just feed them through Ghostscript and see if it works then. > If...

Adding it to the hooks is not very elegant, but definitely much more elegant than just making `\tikz@tangent` global. Please go ahead.

This is an interesting proposal but it needs very careful testing because there are a lot of downstream consumers of this code like `tikz-cd`. Please also sign-off on your commits....

This PR is blocked by #1116.