TeX, LaTeX and Friends

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dedded

03:21

Just noticed that lualatex and lualatex-dev are both symlinks to luahbtex. Are they then identical?

AlMa1r

04:13

Suggestion, inspired by my tex.stackexchange.com/questions/170547 : add the [nonfrenchspacing] tag.

Wrong link above. Correction: tex.stackexchange.com/questions/710284 .

2 hours later…

Joseph Wright

06:26

@dedded No

@dedded The way this works is that TeX engines example arg[0] to see what format to load, so lualatex => luahbtex &lualtex but lualatex-dev => luahbtex &lualatex-dev, i.e. they use hte same engine but load different format files

2 hours later…

Jasper Habicht

08:14

@JosephWright Hmmm ...

        \draw_begin:
     	\draw_path_circle:nn { 0 , 0 } { 1.25cm }
     	\draw_path_use_clear:n { fill }

     	\draw_path_rectangle_corners:nn { -1cm , -1cm } { 1cm , 1cm }
     	\draw_path_replace_bb:
\draw_end:

so, something like this?

Output seems to be ... strange

Rmano

08:29

:65233215 I think that being able to force the BB would be useful in several cases... I do not think that clip is the same. An equivalent to \path [use as bounding box] (a,b) rectangle (c,d); would be useful --- example : gist.github.com/Rmano/c68789c5efe8feca897da66d4e991be8 @JosephWright

Jasper Habicht

@Rmano Yes, that's the idea.

Rmano

@JasperHabicht I had not time to look at the proposed implementation --- so it could be already like that. The semantic in pgf is a bit complex, I would prefer to have it last in the drawing and force the BB no matter what (sometimes you want part of the drawing stick outside of the BB, like a partial overlay).

Jasper Habicht

@Rmano The current idea is (if I understood Joseph right) to have a command \draw_path_replace_bb: that uses the current path to update the bbox. It will discard the current path, but you can put some \draw_path_use:n { ... } before.

But currently, it seems, that the command does not use the path to update the bbox, and the bbox just becomes a zero-sized box

David Carlisle

08:46

@dedded similarly latex, pdflatex, pdftex, etex,xmltex are all symlinks to pdftex

Skillmon

09:01

@DavidCarlisle pdftex is a symlink to pdftex?

Joseph Wright

@Skillmon :)

David Carlisle

09:40

@Skillmon it is if you choose the "make symlinks in /bin" install option (which is clearly what i was refering to, as I'd never have mistyped a list)

Skillmon

@DavidCarlisle :P

Jasper Habicht

10:02

The fill and stroke commands from the l3opacity package only work with the pdfmanagement module which ... does not exist currently?

Skillmon

@JasperHabicht \DocumentMetaData should load it, iirc.

Ulrike Fischer

@JasperHabicht as @Skillmon says, you need \DocumentMetadata{} (small d ...).

Skillmon

@UlrikeFischer whoopsie :)

Jasper Habicht

@UlrikeFischer Ah, thx!

Ulrike Fischer

@JasperHabicht transparency need resources in the PDF that must be managed to avoid incompabilities between packages like this one tex.stackexchange.com/a/253417/2388. That is one of the main point of the PDF management.

Jasper Habicht

10:13

@UlrikeFischer Yes, I understand this. I was trying to find out on my own, but I got stuck at some error pointing to \pdfmanagemant_add:nnn and then I tried to find where this is defined ... but I got lost

Ulrike Fischer

10:26

@JasperHabicht texdoc pdfmanagement or texdoc -l pdfmanagement

Jasper Habicht

@UlrikeFischer I searched on GitHub. There, it is in latex3 / pdfresources

Ulrike Fischer

@JasperHabicht yes it started under this name.

4 hours later…

dedded

14:29

@JosephWright Ah, I figured that was the difference between lualatex and luatex, but I always thought that ...-dev referred to a new engine.

David Carlisle

@UlrikeFischer can we redefine \pmb in latex-lab-amsmath ?

Ulrike Fischer

@DavidCarlisle I just wanted to look at that ;-). Any suggestion for a better definition? (Btw: I fixed the two bible issues in tagpdf/dev.)

David Carlisle

@UlrikeFischer can we just tag the first and tag the overprints as artifact?

yes I saw the diff mail although haven't rebuilt yet.

@UlrikeFischer you could in theory get the same from \bm if it can't find anything better and decides to do \bm@pmb which is similar to amsmath \pmb (but better, of course)

Jasper Habicht

14:57

@JosephWright With the code of your last commit, \draw_path_replace_bb: first does \draw_reset_bb: which sets \g__draw_(x|y)(min|max)_dim to \c_(min|max)_dim. Then, \__draw_path_use_bb: is called, but the comparison \dim_compare:nNnF { \dim_use:c { g__draw_ #1#2 _dim } } = { #3 -\c_max_dim } in \__draw_path_use_bb:NnNN will now always result in TRUE, so the bounding box won't get updated.

... if I am not lost in the code, that is ...

Ulrike Fischer

@DavidCarlisle I think that should work. Or do you think that we disturb spacing here somewhere:

\DocumentMetadata{uncompress,testphase=phase-III,debug={log=vvv}}
\documentclass{book}
\usepackage{amsmath}
\begin{document}
\makeatletter
\def\pmb@@#1#2#3{\leavevmode\setboxz@h{xxx#3}%
   \dimen@-\wdz@
   \kern-.5\ex@\copy\z@
   \tagmcend\tagmcbegin{artifact}%
   \kern\dimen@\kern.25\ex@\raise.4\ex@\copy\z@
   \kern\dimen@\kern.25\ex@\box\z@
   \tagmcend\tagmcbegin{}%
}

\def\pmb@#1#2{\setbox8\hbox{$\m@th#1{#2}$}%
  \setboxz@h{$\m@th#1\mkern.5mu$}\pmbraise@\wdz@
  \binrel@{#2}%
  \dimen@-\wd8 %

Joseph Wright

@JasperHabicht Yes, but that's also what pgf does - I must have missed a step somewhere

Jasper Habicht

@JosephWright Why is the comparison? To prevent \g__draw_xmin_dim from being too large?

Joseph Wright

@JasperHabicht I think I know what's up

David Carlisle

15:19

@UlrikeFischer I don't think so as there is no math magic spacing here it's all in hboxes positioned with \kern and \raise so the spacing is pretty much in explicit control

Joseph Wright

@JasperHabicht Ah, found a couple of issues

David Carlisle

@UlrikeFischer can you patch bm from latex-lab or do you want a modification in bm itself to give you a hook or socket or some such ?

Joseph Wright

@JasperHabicht Fix in hand I hope

Ulrike Fischer

@DavidCarlisle If I see that correct only has to redefine \bm@pmb@@? Imho it would be more sense now to that in latex-lab. I would use sockets in "external" packages only when we are sure which one we really want.

David Carlisle

@UlrikeFischer OK sounds good to me

Joseph Wright

15:30

@JasperHabicht github.com/latex3/latex3/commit/…

Jasper Habicht

15:42

@JosephWright Cool! I'll check later, but I will =)

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