TeX, LaTeX and Friends

7:00 AM

Hello. How can I reduce the distance between arrow and label text in Tikz-CD? I try to adjust row sep and column sep but it is for nodes and arrows.

David Carlisle

8:26 AM

@AlanMunn well it was a comment to the OP and he/she presumably knew the question that they had asked a few hours earlier.

Enthusiastic Engineer

8:44 AM

@barbarabeeton in the footnote @DavidCarlisle 's name is mentioned... ∗The original version of this document was written by David Carlisle, with several additional tables provided by Alexander Holt. See Section 10.8 on page 230 for more information about who did what.

David Carlisle

@EnthusiasticEngineer (@barbarabeeton) my version is still on ctan try texdoc maths-symbols in texlive, it's somewhat shorter

Paulo Cereda

9:00 AM

Teh dungeon!

Ulrike Fischer

@MarcelKrüger @DavidCarlisle @JosephWright I have a problem with the pageattr implementation in luatex. Basically I want to do something like \latelua{pdf.setpageattributes ("\ifodd \value{page} /Tabs/R\else /Tabs/S\fi ")}. But I want to store the \ifodd \value{page} /Tabs/R\else /Tabs/S\fi in a lua table and retrieve from there. But when I do this, the tex code is no longer expanded and ends verbatim in the pdf. Is there any chance to get this working?

Enthusiastic Engineer

@PauloCereda hi Paulo, how are you? long time I have been absent in TeX.SE

missed most of the TeX users here...

Paulo Cereda

9:15 AM

@EnthusiasticEngineer 'ello! :) In a hurry, but fine! And you? :)

Skillmon

@PauloCereda oh, a fast duck!

Enthusiastic Engineer

@PauloCereda fine thanks, these days I am mostly busy with python! Love it but not as much I love LaTeX!

Paulo Cereda

@Skillmon quack :)

@Skillmon 'ello mr. rabbit!

@EnthusiasticEngineer :)

Skillmon

@PauloCereda Hello, Mr. Duck!

David Carlisle

11:14 AM

@UlrikeFischer if you want the \ifodd expanded by tex you would have to tex.print it back to tex at some point but you could write the test in Lua instead, as you can access \c@page in Lua and test if it is odd.

Ulrike Fischer

11:48 AM

@DavidCarlisle the \ifodd was only an example for more or less random commands which perhaps need the current page number. I think I found a solution with set_macro but need to check.

Sebastiano

Good morning, everyone, and have a nice lunch if you haven't had lunch yet.

campa

@UlrikeFischer Too bad you could't be on the dante meeting this weekend. I would have surely enjoyed meeting you.

Sebastiano

Hi campa :-)

@egreg @Mico Thank you very very much for your suggestions.

2

Q: Is there a new partial symbol into newtx package?

At this moment I do not remember exactly if I had asked a specific question here or in chat. However I remember that I had asked courteously to @egreg to change, for my tastes, the default \partial symbol of mtpro2[lite] with another one that was coherent with the package newtxtext (actual Time...

On my previous question, has any of you had any news?

Dr. Manuel Kuehner

12:27 PM

i, I have a question about my login. How can I contact a moderator?

*Hi

My bad - I was totally blind and found it now :)

David Carlisle

@Sebastiano same answer I always give: don't ask to change one character from a font. Pick an entire font as one coherent work.

4

Marcel Krüger

12:59 PM

@UlrikeFischer I think you will have less problems if you store the token list instead of the string. Then it doesn't depend on catcodes etc and you can evaluate it on demand by writing it to TeX using token.put_next and then reading using token.scan_string

Joseph Wright

u

@UlrikeFischer I think \pdfmajorversion is sorted :)

@DavidCarlisle, @UlrikeFischer I've added \pdfmajorversion to expl3: probably will be on CTAN this week (today?) so well ahead of any engine support

David Carlisle

@JosephWright thanks for permuting some letters

Joseph Wright

1:25 PM

Grr, something is up with my siunitx test files and it is Not My Fault

\documentclass{article}
\usepackage{fontspec}
\setmainfont{OpenSans-Regular.ttf}[
   LetterSpace = 2,
   FontFace = {lt}{n}{OpenSans-Light.ttf},
   FontFace = {sb}{n}{OpenSans-Semibold.ttf},
   FontFace = {bf}{n}{OpenSans-Bold.ttf},
   FontFace = {bx}{n}{OpenSans-Bold.ttf},
   FontFace = {xb}{n}{OpenSans-ExtraBold.ttf},
   FontFace = {lt}{it}{OpenSans-LightItalic.ttf},
   FontFace = {md}{it}{OpenSans-Italic.ttf},
   FontFace = {sb}{it}{OpenSans-SemiboldItalic.ttf},
   FontFace = {bf}{it}{OpenSans-BoldItalic.ttf},

@UlrikeFischer, @MarcelKrüger ^^ Used to work with LuaTeX, now it doesn't, any idea why?

Ulrike Fischer

@MarcelKrüger can you show an example? (I'm currently on the road, and will be offline for some time)

barbara beeton

@EnthusiasticEngineer -- I remember the original, and in its heyday it was very useful. But it's only 6 pages long and covers only those symbols available for "original" TeX. Much more variety is needed and is now available.

Alan Munn

1:43 PM

@DavidCarlisle Ah ok, I missed that.

Paulo Cereda

@JosephWright ooh NMF

Marcel Krüger

2:17 PM

\pdfvariable compresslevel0
\pdfvariable objcompresslevel0
\documentclass{article}
\directlua{
my_crazy_table = {}
function store_tokens()
local name = token.scan_string()
local toks = token.scan_toks()
table.insert(toks, 1, token.new(123, 1))
toks[\csstring\#toks + 1] = token.new(125, 2)
my_crazy_table[name] = toks
end
function get_string(key)
token.put_next(my_crazy_table[key])
return token.scan_string()
end
}
% Jetzt können wir die Tabelle füllen. Da die Tokens aus TeX kommen,
% werden die catcodes auch nach normalen Kriterien bestimmt :)

@UlrikeFischer ^

Joseph Wright

2:31 PM

@UlrikeFischer, @MarcelKrüger Decided I'd post a question!

0

Q: OpenSans package and LuaLaTeX:

The OpenSans package seems to be failing to work with LuaLaTeX: \documentclass{article} \usepackage{opensans} \begin{document} Hello world \end{document} yields first error (of many): ! Package fontspec Error: The font "OpenSans-Regular" cannot be found. For immediate help type H <return>...

fontspec opensans

@egreg, @DavidCarlisle ^^^ It's not that hard to find the button

Phelype Oleinik

@JosephWright Works for me...

Joseph Wright

@PhelypeOleinik Hmm, what's your \listfiles? What platform are you on?

Phelype Oleinik

@JosephWright Just compared \listfiles: it's identical. I'm on Ubuntu TL 19

@JosephWright I can try on Windows. Hold on

Joseph Wright

@PhelypeOleinik OK: if it's important, I'll edit that in, but will wait on your first

@PhelypeOleinik I've tried two different systems ...

Paulo Cereda

@JosephWright works for me too

Joseph Wright

2:39 PM

@PauloCereda Linux?

Paulo Cereda

@JosephWright yes

Joseph Wright

@PauloCereda Hmm

Phelype Oleinik

@JosephWright “Working on updates...” ¬_¬

Joseph Wright

@PauloCereda, @PhelypeOleinik I've tried TeX Live 2019 on two machines and MiKTeX on one: same result in all cases

I wonder about the file searching change ... working on it

Pretty sure it's not expl3: I've checked with TL'18 and everything is fine with the latest expl3 ...

egreg

@JosephWright Works for me.

Joseph Wright

2:51 PM

@egreg Mac?

egreg

@JosephWright yes

Joseph Wright

@egreg Hmm, could do with another Windows user to check, them ... I'm almost certain I've got 'clean' set ups

Phelype Oleinik

After 20 minutes, Windows finished its updates. Lovely.

@JosephWright Works too

Faheem Mitha

Does the \\ that comes at the end of a line in a table have a name?

Just writing a log message. So it would be helpful to know what to call it.

Joseph Wright

@PhelypeOleinik Cool

@PhelypeOleinik Ah, OK, think I've managed to force things to work: did a cache rebuild

@PhelypeOleinik Thanks

Phelype Oleinik

2:59 PM

@JosephWright Ah

@JosephWright You're welcome!

David Carlisle

@JosephWright mine has a user css applying visibility:none which makes it quite hard to find

Joseph Wright

@DavidCarlisle Hah!

Paulo Cereda

@DavidCarlisle ooh

David Carlisle

@FaheemMitha not really, the named form is \tabularnewline

Faheem Mitha

@DavidCarlisle Oh. I didn't know that. Thanks.

David Carlisle

3:04 PM

@FaheemMitha you can use \tabularnewline to end a table row even after \centering or \raggedright have redefined \\

Faheem Mitha

@DavidCarlisle So \\ is the same as \tabularnewline by default?

David Carlisle

@FaheemMitha \\ in tables yes, but \\ has different definitions in centering or raggedright or several other places so in nested contexts it can have the wrong meaning hence \arraybackslash that sets it back to the tabular meaning

Faheem Mitha

@DavidCarlisle Oh. \arraybackslash resets \\ to \tabularnewline?

Paulo Cereda

@JosephWright twitter.com/patrickgundlach/status/1186262885976158208

2

David Carlisle

@FaheemMitha yes (well it has that effect, actually it uses some internal version of the same)

Faheem Mitha

3:10 PM

@DavidCarlisle Ok.

Joseph Wright

@PauloCereda One for wider use, I imagine

Paulo Cereda

@JosephWright yes!

Phelype Oleinik

@PauloCereda Oh, nice!

Paulo Cereda

@PhelypeOleinik indeed!

David Carlisle

@PauloCereda useful if you can write your entire thesis in one sitting as it saves you ever running latex more than once.

Paulo Cereda

3:12 PM

@DavidCarlisle ooh it could be an empty thesis

Faheem Mitha

@PauloCereda Is that in LuaTeX, then?

Paulo Cereda

@FaheemMitha yes

@DavidCarlisle I will submit a motion to the AGM

Faheem Mitha

@PauloCereda Oh.

David Carlisle

@PauloCereda you would know about those, I assume.

Joseph Wright

preining.info/blog/2019/10/…

3

Paulo Cereda

3:15 PM

@DavidCarlisle ooh

@JosephWright of course @DavidCarlisle already knew of that :)

Faheem Mitha

@JosephWright I didn't even know there was a language called Tibetan. Does it has its own alphabet?

David Carlisle

@PauloCereda well anyone following tl list recently knew quite a bit of it:-)

Paulo Cereda

@DavidCarlisle bah spam :)

Joseph Wright

@FaheemMitha Yes

Faheem Mitha

Looks exotic.

Presumably a challenge for typesetters.

Ulrike Fischer

3:19 PM

@JosephWright wow he really looked in it ;-)

barbara beeton

@FaheemMitha -- Ever hear of the Dalai Lama? Tibetan is the language he speaks as a native.

Faheem Mitha

@barbarabeeton I've heard of him, yes.

Paulo Cereda

@barbarabeeton for a minute, I read llama

Faheem Mitha

I think I might have vaguely heard of the language before.

Paulo Cereda

@JosephWright ¡CUIDADO, LLAMAS!

Joseph Wright

3:21 PM

@PauloCereda OH MY!!!

Faheem Mitha

But I'm pretty sure I've never met anyone from Tibet. I don't even know whether it is its own country. I seem to remember something about a Chinese invasion.

barbara beeton

@PauloCereda -- "A one-l lama is a priest. A two-l llama is a beast. And I will bet a silk pajama, there isn't any three-l lllama."

2

Faheem Mitha

But it's hard to keep track of all the horrible things that go on in the world. Even if I wanted to.

Paulo Cereda

@barbarabeeton oh!

Faheem Mitha

I did read "Tintin in Tibet" once. It didn't feature the Dalai Lama, though.

It did feature Llamas.

barbara beeton

3:23 PM

@FaheemMitha -- Misplaced geographically. Llamas, like alpacas, are native to the South American mountains.

Faheem Mitha

@barbarabeeton Maybe I got my Tintin books confused, then. It's been a while.

Paulo Cereda

@barbarabeeton speaking of llamas, I don't know if I ever told you this story: travelblog.dailymail.co.uk/2009/04/… I am sure you will find it very, very amusing!

Faheem Mitha

In "Tintin in Tibet", Tintin has a dream that his friend Chang, who is been in a plane crash, is still alive. So he goes to Tibet to find him. And since he's Tintin, he succeeds.

As I recall, Chang is being taken care of by a Yeti. Or the Yeti?

Anyway, that's about as much as I know about Tibet.

Except, if they are at the mercy of the Chinese, I feel sorry about them.

There aren't a lot of upsides to living in India. But at least we don't have to worry about being invaded by China.

@barbarabeeton I think I got it confused with "Prisoners of the Sun". Which does take place in South America.

Sebastiano

@DavidCarlisle :-):-) you're right, but I like them both right now. I was just curious to know what happened as the symbol in the table is the right one. :-)

Good afternoon to all from the warm Sicily. Here if any of you want to come to sea is always welcome.

@egreg Good afternoon to you and always an immense thank you with the heart. If I have to come to Sicily bring some rain here too. There is dry weather and very little rain.

barbara beeton

@PauloCereda -- Oh, absolutely delightful! Thank you! (I should have credited the poet I quoted -- Ogden Nash, a sometime denizen of the city where I grew up. His poetry helped develop my sense of the ridiculous.)

Faheem Mitha

3:37 PM

Hi @Sebastiano. How goes it?

barbara beeton

@FaheemMitha -- Which is why the Dalai Lama and much of the Tibetan expatriate community are now quartered in Dharamsala.

Paulo Cereda

@barbarabeeton <3

Faheem Mitha

@barbarabeeton They've living in India? I didn't know that.

Poor people. That's terrible.

Sebastiano

3:54 PM

@FaheemMitha Very good except for the heat out of season :-). There are many tourists: English, French, German, Russian. But I hope for my health that the rain and the cold will come. I always wish you the best.

Faheem Mitha

@Sebastiano I hope you have A/Cs in Sunny Sicily.

Ulrike Fischer

@MarcelKrüger I think I understand it, and I think that it the way to go - much safer than trying to escape stuff. But why does the get_string command use token.scan_string()? From the documentation I would have expected to get a list of catcode 11 and 12 characters ;-(.

Phelype Oleinik

4:13 PM

@JosephWright Yet another filehook update issue: tex.stackexchange.com/questions/513051/…

Ulrike Fischer

4:35 PM

@PhelypeOleinik hm, filehook loads filehook-memoir which requires filehook and then you get the error. This looks a bit like the circular call just discussed in the github.

Ulrike Fischer

5:03 PM

@MarcelKrüger I think I misunderstood the token.scan_string(). How can I at best map over a list of keys and create `pdf.setpageattributes(get_string 'keyA'..get_string 'keyB'..get_string 'keyC')?

Marcel Krüger

6:28 PM

@UlrikeFischer get_string does read a braced argument, if there are braces. If there are no braces it reads as much catcode 11 and catcode 12 tokens as possible. But after reading, you have a Lua string and no longer TeX tokens.

Ulrike Fischer

@MarcelKrüger yes, I got it now, I was a bit confused first as I thought it would expand my command, but this is earlier. I managed to loop over the table too. This is quite neat once one gets the hang on it.

Phelype Oleinik

@UlrikeFischer Indeed it is. Thanks!

Although memoir still needs an update to match the current version of \InputIfFileExists (@daleif).

Marcel Krüger

@UlrikeFischer It does actually expand your argument, most LuaTeX token library functions do full expansion.

If you want to iterate, you probably should use integer keys for the table.

Ulrike Fischer

@MarcelKrüger I have keys anyway (StructParents, Tabs, Rotate), and I need them as two setting of e.g. Rotate should overwrite each other.

daleif

6:49 PM

@PhelypeOleinik noted, I've scheduled time for memoir updates tomorrow (is currently taking a vacation)

Phelype Oleinik

@daleif No rush. Enjoy your vacations ;-)

daleif

7:06 PM

@PhelypeOleinik now that I'm not at a computer all day, I don't mind being at a computer at home. I'm wondering, when getting these changes inline do we also need to make this 2019-10-01 format only or are the new defs also usable on their own? In short what happens if a user only update memoir and not the kernel?

Phelype Oleinik

@daleif Since memoir redefines \InputIfFileExists there should be no problem of using the new code with an older kernel. The only changes were a small bug (github.com/latex3/latex2e/issues/109) and the command was made robust.

@daleif However if some package assumes that \InputIfFileExists has its old meaning, bad things may happen. We're talking about LaTeX packages after all ;-)

@daleif One bad combination, for example, would be someone using an updated memoir with an older version of filehook. I think that, for the sake of safety, you could have memoir detect which version of the kernel it is running on...

Paulo Cereda

8:38 PM

@JosephWright follow this account: twitter.com/duckoftheday

David Carlisle

8:50 PM

@PauloCereda menuoftomorrow

Paulo Cereda

@DavidCarlisle oh no

CarLaTeX

@DavidCarlisle You're mean

David Carlisle

@CarLaTeX not me vv

Sep 25 at 9:22, by Paulo Cereda

@DavidCarlisle ^^ I think @CarLaTeX is mean

CarLaTeX

@DavidCarlisle oh no

David Carlisle

@CarLaTeX you just need an ooh and your @PauloCereda impersonation will be complete

Paulo Cereda

8:54 PM

@DavidCarlisle ooh

CarLaTeX

9:10 PM

@DavidCarlisle Ooh

Ulrike Fischer

10:00 PM

@MarcelKrüger Is there any trick to use the token scanner together with \latelua?

David Carlisle

10:10 PM

@UlrikeFischer er, why?

Marcel Krüger

@UlrikeFischer You can. How exactly depends on what you are trying to do.

David Carlisle

@UlrikeFischer it's late at night and you are giving me \afterpage nightmares

Ulrike Fischer

@DavidCarlisle @MarcelKrüger well it is about setting \pdfpageattr: I'm trying to setup the commands so that they affect "the current page" and work like a \special.

@DavidCarlisle ;-). my husband sent me this for you (but he didn't say why):

David Carlisle

@UlrikeFischer needs a few more weeks

Marcel Krüger

@UlrikeFischer So do I understand this right? You are getting a string in Lua, want to tokenize and evaluate it and the assign it to \pdfpageattr. In the process, it is important that you use \pdfpageattr and not pdf.setpageattributes and you also want to avoid weird side-effects?

Ulrike Fischer

10:28 PM

@MarcelKrüger the command I have is \pdf_thispageattr_gput:nn. And it should affect the current page. So \pdf_thispageattr_gput:nn{Rotate}{90} should rotate the "current" page, which mean the page the command is "on" (would print something). The implementation is not really relevant but I used lua to avoid a second compilation. It worked quite fine until I realize that I also want \pdf_thispageattr_gput:nn{Rotate}{\ifodd\value{page}90\else-90\fi};-(.

Ulrike Fischer

10:39 PM

@MarcelKrüger I also want (in tagpdf) insert for every page a /Structparents entry with increasing page number. So something like \pdf_pageattr_gput:nn{Structparens}{\int_use:n{\g__tag_abspage_int}} should work too and "update the value on every page".

Marcel Krüger

@UlrikeFischer This gets a bit long for a message. I can prepare you a small GitHub gist tomorrow.

Ulrike Fischer

@MarcelKrüger that's fine. I need to sleep it over anyway. It took me some time to realize that there is a difference in directlua and latelua here ;-)

@campa I would liked to be there too, but it wasn't possible - we were just flying back from Sicily.

Marcel Krüger

10:57 PM

@UlrikeFischer Should \pdf_pageattr_gput:nn affect only the current page or all pages starting with the current one?

Ulrike Fischer

11:08 PM

@MarcelKrüger all pages starting from the current one, where it is not so important that it is really the current page in shipout sense, but if the value contains code referring to the page number it should work.

@MarcelKrüger with xetex one has specials and so a strong connection to the current page and I tried to mirror this for the other engines. At least for float pages it is important.

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$TeX - LaTeX$ TeX, LaTeX and Friends