@ShreevatsaR probably there was (or someone feared that there would be) general internet trolling for any question about "security issues".

@ShreevatsaR If you look at the history of the question tex.stackexchange.com/posts/358642/revisions you can see who protected it.

^^^ Not a duplicate, please vote to reopen

@HenriMenke Voted

@PauloCereda The Post Office claims that my mail will reach you 'usually within five to seven working days'. And they're supposed to return it to me for free if it is undelivered. (Not that I want them to return it, of course, else I wouldn't have paid them to take it to Brazil in the first place. There is something worrying about a service which offers to undo for free what you've just paid them to do ....)

@AlanMunn oh

@cfr Our postal service works basically the same, however there's almost no guarantee that a mail is returned if, for some reason, it could not be properly delivered. :)

@DavidCarlisle ^^ :D

@PauloCereda the high point being my thesis, naturally

@PauloCereda I'm happy (but confused) seeing that graph. Has it become better in the last years?

@mickep Sometimes I think people plot random stuff just to increase the chances of approving a paper. :)

@PauloCereda Yeah, who doesn't love a beautiful graph? :)

@mickep :)

@mickep ^^

@PauloCereda Hoho, I'm happy to be in the mathematics department. No pie charts at least.

@DavidCarlisle normal mode. :)

@PauloCereda so true!

@JonasStein :)

What is the modern way to define hyphenation rules for multiple languages in Lualatex? I expected, this is an FAQ, but did not find a Q on sx. Did I search with the wrong words, or should I open a new question?

@PauloCereda @mickep even seen this one before: youtu.be/3T7jMcstxY0

@daleif Very nice!

tex.stackexchange.com/questions/411685/… I think I need to elaborate on this question a bit... any suggestions, what I should add?

on the one hand it is so short. On the other hand I do not see what could be missing.

@barbarabeeton My understanding is that \colon is appropriate here. I left a comment on the question. (Also, one arrow should be \mapsto.)

@daleif Thanks! I think I've seen this graphic in one of Tufte's books (don't remember which one).

@PauloCereda Relative of yours? washingtonpost.com/news/animalia/wp/2016/10/20/…

@HaraldHanche-Olsen Very touching! The entire reading made me smile!

> After the flight, he looked up Daniel’s breed and discovered that Indian Runner ducks do not fly.

Of course they fly! By plane. :)

@barbarabeeton: ^^ see Harald's link above! :)

@HaraldHanche-Olsen: there's a comment in the article: Hope first class was not serving duck... Hmmm that sounds suspiciously like our resident English bloke...

@PauloCereda It sounds more like not him, if you ask me.

@HaraldHanche-Olsen :)

@JonasStein it's not at all clear what you are asking for, Do you want an answer that says "use \setlanguage{german} to enable German hyphenation", or do you want an answer that says "German hyphenation is defined in a 24 thousand line file starting \patterns{.ab1a .abi4t .ab3l " ?

English tea, anyone? Yummy!

@PauloCereda Do you want lemon or milk with that?

@HaraldHanche-Olsen I tried both separately. :)

@PauloCereda “Surely you're joking, Mr. Feynman”

@HaraldHanche-Olsen :)

@DavidCarlisle What's with this example on your machine?

\edef\tenitnumber{\pdffontobjnum\tenit}
\message{The font number is \tenitnumber}

\tenitnumber

\bye

@egreg Oooh

@JosephWright But LuaTeX doesn't fail on this one

\edef\first{\pdffeedback fontobjnum\tenit}

\first

\bye

@egreg Indeed

Bug in pdftex?

It surely shouldn't fail like that

@egreg Yes

@egreg Indeed: an assertion failure is a bug in the software

@egreg Now, who do we report this too?

@JosephWright Good question. Akira?

@egreg I'm minded to try the TL list: best place as any

@JosephWright I can do it.

@JosephWright tug.org/pipermail/tex-live/2018-January/040966.html

@egreg, @DavidCarlisle Thank you for your comments! Anything I should add in tex.stackexchange.com/questions/411685/… ?

$ etex fi
This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017) (preloaded format=etex)
 restricted \write18 enabled.
entering extended mode
(./fi.tex{/usr/local/texlive/2017/texmf-var/fonts/map/pdftex/updmap/pdftex.map}
The font number is 1 [1] )
Output written on fi.dvi (1 page, 232 bytes).
Transcript written on fi.log.


$ pdftex fi
This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017) (preloaded format=pdftex)
 restricted \write18 enabled.
entering extended mode
(./fi.tex{/usr/local/texlive/2017/texmf-var/fonts/map/pdftex/updmap/pdftex.map}

@egreg @JosephWright ^^

@DavidCarlisle Yes, the error happens when the PDF file is being finalized.

@JonasStein it still isn't very clear what you want to do. add additional \hyphenation babel (and I assume polyglossia) have commands for that or add \patterns (which is only possible in luatex or ... ? Your example already shows what I thought was one possible answer, namely how to switch between german and english hyphenation

@egreg does it do same on older texlive?

@egreg: for a minute, I thought you tested in Windows. :)

@DavidCarlisle I tried on TL2012 and it's the same

@egreg oh I see {\tenit a} makes the error go, it seems it's an empty set assertion first <= last failing if there are no characters in that font

@DavidCarlisle wow, you are good.

@DavidCarlisle my question is, how do I define something like long\-german\=word and long\-english\=word

for the whole document

am I looking for \begin{hyphenrules}{ngerman}...

or perhaps \hyphenation[ngerman]{mord-op-fer}? I am not sure what is the right way. At least I found these in the links after writing my question

will I need babel? I thought babel is obsolete with polyglossia

I am looking for a WYSIWYG editor/drawing program for mac. TikZiT can only do nodes and lines between them. I specifically want Bézier curves with no nodes. I know that there are questions discussing different editors - can someone guide me?

@hpekristiansen Inkscape can export to PSTricks

if that helps...

Yes - I know Inkscape, but I do not like the ugly exported code - I am hoping for a true WYSIWYG editor for TikZ, where the code is visible while drawing.

@JonasStein \hyphenation{mord-op-fer} will do what you expect if german is the current active language. If needed add a \selectlanguage{ngerman}. And babel is not obsolete, it works fine also with lualatex and xelatex (for german and english I would prefer babel over polyglossia).

why would you prefer babel over polyglossia?

So I will have to create one \hyphenation{} per word, or is there also an environment? Is this part of polyglossia, or babel?

@JonasStein because babel is maintained actively.

@JonasStein You can add a list of words (separated by spaces) in \hyphenation.

oh! I really thought polyglossia would be the successor of babel. I do not remember why I switched to polyglossia, but in connection with lualatex I remember that I wrote "use polyglossia with Lualatex" in my notebook

@JonasStein There are a number of scripts which needs polyglossia as babel doesn't support them. But if you don't use them babel is fine (and e.g. for french the language file is much better).

but polyglossia is already abandomed/unmaintained?

@JonasStein that's a political question not a technical one:-)

I see ;-)

@JonasStein \hyphenation is a tex primitive and takes a space separated list of words, it's only designed for fixing exceptions where the patterns have not matched in the way you want, it doesn't do any kind of matching, the word has to be exact so any plurals or random German combinations of six words stuck together all need to be listed separately

OK and what should I do, if I want to add some more words to a "personal" list?

@JonasStein just stick \hyphenation{zz-zz zzz-zzz-zz zz-zz-zz-zz-zz} in myhyphenations.tex and \input{myhyphenations} in whatever document you need it

@JonasStein none of this is luatex specific, it would be the same in classic tex

ok. Where can I look up the syntax for it?

@JonasStein The texbook but that is the full syntax, a space separated list of words with - denoting hyphenation points

in german for example I have to write klik-kern

klickern gets klik-kern

@JonasStein Well the last commit on the master branch was in april, there are over 100 open issues and 16 open pull requests.

@JonasStein Not in the new ortography.

@JonasStein you can not do c->k via automatic hyphenation

@JonasStein please don't that is an illegal copy the site has been asked multiple times to take it down

@UlrikeFischer oh 100 open issues and 16 open PR for so long that looks bad

@JonasStein you could delete the comment with that url if there is still time

@DavidCarlisle ok, it was the first hit in the search engine

@UlrikeFischer (don't mention the longtable bug tracker)

@JonasStein because there are no legal copies to come ahead of it. The tex source of the book is in texlive but the copyright notice explicitly says you are not to process it with tex

Hi all..

@JonasStein that very example is in the texbook though, it says:

\dangerexercise Before 1998, some ^{German} words changed their spelling
when split between lines. For example, `backen' became `bak-ken'
and `Bettuch' sometimes became `Bett-tuch'.
How can you instruct \TeX\ to produce such effects?
\answer |ba\ck/en| and |Be\ttt/uch|, where the macros |\ck/| and |\ttt/|
are defined by
\begintt
\def\ck/{\discretionary{k-}{k}{ck}}
\def\ttt/{tt\discretionary{-}{t}{}}
\endtt

@JonasStein but note you would then need kli\ck/ern as input

@DavidCarlisle one may distribute the source of the texbook, but not the compiled pdf?

@JonasStein exactly, the book you are supposed to buy, the source is made available for education, so you can see how Knuth marked it up, it has a trivial bit of tex code in the first line so that it does not produce any output, and you are asked not to disable that

@JonasStein the top of the file says

% This manual is copyright (C) 1984 by the American Mathematical Society.
% All rights are reserved!
% The file is distributed only for people to see its examples of TeX input,
% not for use in the preparation of books like The TeXbook.
% Permission for any other use of this file must be obtained in writing
% from the copyright holder and also from the publisher (Addison-Wesley).
\loop\iftrue
  \errmessage{This manual is copyrighted and should not be TeXed}\repeat

@DavidCarlisle Should I add one more about tex.stackexchange.com/a/384462/2388?

@UlrikeFischer probably a good idea as I had forgotten all about that, but the patch seems to be adding endgraf after the skip? how does that do anything if i is in vmode already?

@UlrikeFischer oh triggering the output routine..

@DavidCarlisle Added an issue.

@DavidCarlisle Something like this. I forgot the details, I only remember that the \vskip disappeared ...

@UlrikeFischer thanks

@DavidCarlisle I seem to remember that a long time ago, it was standard practice to benchmark TeX engines by compiling the book. Though technically a copyright violation, it was considered okay so long as you didn't use the resulting dvi file for anything. But I guess times have changed, and nobody does this anymore.

@HaraldHanche-Olsen It would take so little time as to not be worth it

@JosephWright On modern computers, yes, I suppose.

@UlrikeFischer Eek! It appears that Arthur Reutenauer ran out of steam after five or six years. And nobody wants to take over? I too thought the future belonged to polyglossia, but now I am not so sure.

@DavidCarlisle We have some similar issues in Norwegian. With babel, I can write pa"kkasse and have it render as pakkasse og pakk-kasse, but it would have been nice to have an extension to the \hyphenation mechanism to deal with this. Are there any hyphenation related hooks in LuaTeX?

@HaraldHanche-Olsen luatex has an extended syntax:

\documentclass{article}
\usepackage[ngerman]{babel}

\hyphenation{ba{k-}{}{c}ken}
\textwidth=3cm
\begin{document}
backen backen backen backen backen backen

\end{document}

@HaraldHanche-Olsen in addition to the extended syntax Ulrike showed there is a callback so you can, in theory, implement a completely different algorithm in lua (I think I have seen experiments that run two different passes of the normal hyphenation run, one targetting compound word breaks and then another looking for a full set of break points0

@DavidCarlisle When they think it's working they can test it on this:

@barbarabeeton you're famous ^^

@DavidCarlisle cake!

The dreaded smallpox virus was eradicated more than 40 years ago, but the threat of its return still looms. In an effort to develop a safer vaccine substitute, Canadian researchers have resurrected a close relative—the extinct horsepox virus—from scratch. Critics say the exercise was pointless, and because the results were published in an open access journal, they fear the smallpox virus can now be manufactured by virtually anybody—terrorists included.

Researchers from the University of Alberta revived the horsepox virus by referencing a publically available genome sequence and by chemical…

futilitycloset.com/2018/01/23/notice-2

@AlanMunn ^^

@PauloCereda OMYAHWEH

@AlanMunn LOL well played. :)

@PauloCereda Those Canadians, always up to no good.

@AlanMunn :) I found the open access journal mention quite... misplaced, perhaps.

@UlrikeFischer Ah, page 57 in the LuaTeX manual! I should have looked before asking. But thanks.

In other Canadian news: outabouter.com/2017/01/18/…

@AlanMunn ooh I like how polite they are!

@PauloCereda The crazy thing about this is that the British actually did it: atlasobscura.com/articles/colonial-india-british-hedge-salt-tax

@AlanMunn WOW

@HaraldHanche-Olsen -- using the texbook file to benchmark tex was explicitly approved by knuth, with, as you said, the caveat that the output was not to be further distributed.

@AlanMunn we're good at hedges

@PauloCereda we could build a hedge of these ^^ across Brazil

@DavidCarlisle I'd prefer a shrubbery, myself.

@HaraldHanche-Olsen just say ni to that

@DavidCarlisle Cut down a tree with a herring? It can't be done.

@DiaaAbidou isn't that the question you just asked on site?

@DavidCarlisle awwww

@AlanMunn I learned from today's paper that Philip Glass will perform in Verona on May 27. I think I'll be touring somewhere else. ;-)

@egreg I think you should go and be amazed.

@cfr Hi long time no see!

Quack!