12:00 AM
also getting an error of using multiple labels

12:24 AM
@BAYMAX -- On all but the last line, put the label just before the \\ and on the last line, just before \end{align} . You want to have one label per line.

@DavidCarlisle I want it to stop undoing my tabbing, and refusing to tab further in while I'm between begin and end

1:26 AM
@barbarabeeton oh nice! that was the catch!

@BAYMAX -- You might consider reading the user manual for amsmath. It's not that long, and it tries to be clear -- texdoc amsldoc at a command prompt.

@barbarabeeton oh nice! thanks! i will google it!

1:46 AM
@BAYMAX -- Yes. That's the current version.

5 hours later…
6:33 AM
@BAYMAX you will also have a copy on your local machine texdoc amsmath

6:52 AM
oh cool! actually am using Overleaf but that's informative as well! thanks

1 hour later…
8:22 AM
> Following an incident on a bus, Transport for Greater Manchester have stated that live snakes are not acceptable face coverings.
2

@PauloCereda I'm Samuel L. Jackson and I've had enough of those **** snakes on this ***** ~~~plane~~~ bus.

@PauloCereda what was the mark up for strike throughs again?

I'm Samuel L. Jackson and I've had enough of those **** snakes on this ***** plane bus.
@PauloCereda why didn't it work when I tried? :(
@PauloCereda ---test---without space, ah, doesn't work if you don't put a space after it. Stupid markup.

8:28 AM
> Giraffes Are Basically Fuzzy Lightning Rods, New Research Suggests

@PauloCereda do you know that awesome giraffes fighting video?
@PauloCereda haven't found the one with added light sabre sounds, but here it is:

8:46 AM

@DavidCarlisle regarding the smashoperator vs bemaer issue, does it make sense to add \color{.} to the definition (aka into the boxes)? Not sure if that part requires specific packages.

9:06 AM
@daleif no it requires xcolor and isn't yet clearly the right fix

9:33 AM
@DavidCarlisle ok, thanks. I was quite confused where it came from, so the analysis on github was very illuminating.

3 hours later…
12:40 PM
You could run emacs in that piece of thingy

12:53 PM
Is there a quick way to list the BibTeX entry types for a given .bst file, or do I have to read the .bst file manually to figure this out?

1:10 PM
@PauloCereda Hola don Pato, Spix is is the younger brother of arara?

@PabloGonzálezL Hola, es un pajaro distinto. :)

@PauloCereda Interesante, no conocía Spix :-)

@PabloGonzálezL pero no es una arara :)

@PauloCereda It is missing manual pages to reach it :)
@PauloCereda Ask separately, how will they do it in your country for the national tests?
@PhelypeOleinik mail sent (no subject)

@PabloGonzálezL Reading it just now :-)

1:18 PM
@PabloGonzálezL I am sorry, what do you mean with tests?

@PhelypeOleinik :-)
@PauloCereda Vestibular
@PauloCereda It is the equivalent of PSU in my country (creo)

@PabloGonzálezL Oh I have no idea, I am not following the news. I knew some exams were postponed. Since school activities are probably suspended until next year, perhaps they will wait a bit to disclose more information...

@PauloCereda Interesting, here they will be given on January 4th (yes or yes) ...but they have not said under what conditions

@PabloGonzálezL There's a lot of pressure, it seems.

@PauloCereda The same here, many students "froze" this year, and to take up the next one more the new candidates and the handling of the spaces by the covid-19...it's all a theme.

1:25 PM
@PabloGonzálezL Schools and universities in here are not prepared for drastically changing their teaching methods, and not to mention the ongoing drop of quality in education...

@PauloCereda Here it is the same, even worse if it is about technical careers, not everything can be done/simulated from a computer...that is one of the main reasons why many students have "frozen ".

1:37 PM
@PauloCereda @PabloGonzálezL if you are interested I can tell you how we are managing here in ICAI, Spain to teach engineering ... But probably in a separate chat otherwise I'll be nagged for off-topic...
And a bit later, I'm on a bus now

@Rmano Jeje, es verdad...solo patos y TeX en este chat :-)

1:57 PM
@PabloGonzálezL You forgot cricket

@PauloCereda awesome!

Why does this counter not work?
\edef\temp{
\ifnum\filled=1 \noexpand\stepcounter{rowno}%
\ifnum\first=1 {f\col/r\therowno/k\k,}%
\else  {c\col/r\therowno/k\k,}    \fi%
\else  x\fi
}\temp

@cis assuming a weeks conversation thread to know what all the undefined commands do?
2
@cis presumably you are using it is some context where and edef isn't the right thing. assuming filled and first expand to numbers what you show would typeset (for example} the group {c\col/r\therowno/k\k,} but if you are expecting that brace group to be the argument of some other macro that can not work

2:18 PM
@DavidCarlisle Mmhh, difficult. I am at a dead end. I think I have to come up with something new.

@cis why are you putting it in an edef anyway?, as written above you could just not have the edef

2:43 PM
@DavidCarlisle Hehe, that's because the whole thing appears in a \pgfplotsforeachungrouped and there edef is wanted.
... or needed

@cis well you have been here long enough to know that a fragment out of context is next to useless for debugging, so I have no idea:-)
3

3:07 PM
@DavidCarlisle I will create a simple MWE.

@PhelypeOleinik I'm not sure I understand where exactly stuff has to be added to l3debug and how...

3:26 PM
@PhelypeOleinik seems like I can't get it to work :(

@Skillmonlikestopanswers.xyz I think adding \__kernel_tl_set:Nx where \tl_set:Nx is should suffice (didn't try though)
@Skillmonlikestopanswers.xyz Want me to do it?

3:45 PM
@PauloCereda ^^

@yo' ooh

(don't ask how difficult it was to convert some of the tikzducks gadgets to outline

@PhelypeOleinik no, won't work as it isn't patchable by that code (it doesn't grab its arguments). But I figured what the issue was (I think) currently running the test suite.
@PhelypeOleinik so far only one test is failing (I'm half way through) -- and that one is m3fp002...

@Skillmonlikestopanswers.xyz But the patch does make it grab the argument

@PhelypeOleinik I'm doing a \cs_gset:Npn \__kernel_tl_set:Nx { \tl_set:Nx } instead.

3:53 PM
@Skillmonlikestopanswers.xyz Or \tl_set:Nx doesn't depend on \__kernel_tl_set:Nx?
@Skillmonlikestopanswers.xyz I still think this would work:
diff --git a/l3kernel/l3debug.dtx b/l3kernel/l3debug.dtx
index cbb8978..ebe1f14 100644
--- a/l3kernel/l3debug.dtx
+++ b/l3kernel/l3debug.dtx
@@ -803,6 +803,7 @@
\tl_set:Nn
\tl_set:No
\tl_set:Nx
+      \__kernel_tl_set:Nx
\tl_set_eq:NN
\tl_put_left:Nn
\tl_put_left:NV
@@ -866,6 +867,7 @@
\tl_gset:Nn
\tl_gset:No
\tl_gset:Nx
+      \__kernel_tl_gset:Nx
\tl_gset_eq:NN
\tl_gput_left:Nn
\tl_gput_left:NV

@PhelypeOleinik no, I reverted that to use \cs_set_nopar:Npx directly instead. The issue is that if you don't you'll get \tl_set:Nx which will call the tests and after that you'll call \__kernel_tl_set:Nx which would call the tests again...

@Skillmonlikestopanswers.xyz Ah, okay, using \cs_set_nopar:Npx should do

@PhelypeOleinik I fail the m3fp002 and m3tl-build001 tests, will have to take another look...

@Skillmonlikestopanswers.xyz Odd... I'd expect either a ton of failures or none at all... This TeX thing is weird :-)

@PhelypeOleinik yep. When I first ran the test suite I got like every one failing because I totally forgot about adapting l3debug... :)
@PhelypeOleinik it's most likely a single macro I've forgotten to revert to \cs_set_nopar:Npx... (well I haven't looked yet)

4:01 PM

@yo' I'm very sorry!

@samcarter_is_at_topanswers.xyz don't be! You probably never intended to make them as outlines, so we are basically misusing tikzducks at Overleaf I think :-)
I consider making some corrections at least though; I think it might be useful.

4:16 PM
@PhelypeOleinik ok, the m3build001 test is now working again (it isn't save to use \cs_set_nopar:Npx there directly, so I put back \tl_set:Nx into all the \tl_build_... functions).

@yo' why does each come with one half coloured and why isn't there an outline of an oven ready duck ?

@Skillmonlikestopanswers.xyz Ah, yes, l3tl-build itself uses some dark Bruno magic to minimise argument-grabbing :-)

@PhelypeOleinik yep, I took a quick look and backed out of it for now :)

@PhelypeOleinik now I have to understand why \fp_set:Nn \l_boom_fp { 123 } throws the uninitialized variable error twice...

4:20 PM
@Skillmonlikestopanswers.xyz (spooky in a good way)

@PhelypeOleinik Maybe I'll read it some day, but not now.

@Skillmonlikestopanswers.xyz Once for \fp_set:Nn and once again for the \tl_set:Nn inside it... probably

@PhelypeOleinik well, I changed the definition from \tl_set:Nx #1 { \exp_not:f { \@@_parse:n {#2} } } to use \__kernel_tl_set:Nx instead, which expands to \tl_set:Nx if debug is on. So it should've had that behaviour already, but somehow....
@PhelypeOleinik turns out I'm stupid.

@Skillmonlikestopanswers.xyz Odd, I just looked and \fp_set:Nn is not in l3debug (which makes sense, since it uses \tl_set:Nn anyway)
@Skillmonlikestopanswers.xyz That's usually the reasonable explanation for errors in code :-)

@DavidCarlisle the 2nd question aim at @PauloCereda I think :-) The first one: There's some "suggested colouring" and then the blank one, but you're not forced in any way to follow the suggested colouring :-)

4:25 PM
@PhelypeOleinik yes, but I had a left over \__kernel_tl_set:Nx in the patching list, which funnily enough didn't make any other test fail but that one...

@Skillmonlikestopanswers.xyz I believe you, but... weird?

@PhelypeOleinik YES, very!
@PhelypeOleinik that happens if you make too many edits in parallel...

@Skillmonlikestopanswers.xyz That happens if you listen to my suggestion of adding stuff to the patch list :-)

@PhelypeOleinik well, in that case I can blame @PhelypeOleinik :)

4:29 PM
@PhelypeOleinik I think the last half hour costed me at least a 5 words of my English vocabulary, that's how hard I face palmed myself.

@PauloCereda aww
@PauloCereda <3

@Skillmonlikestopanswers.xyz Happens a lot to me :-)
@Skillmonlikestopanswers.xyz That's when I learned the magic of git reset HEAD~1 --soft :-)
@Skillmonlikestopanswers.xyz That is, as long as I don't push to the remote

@PhelypeOleinik I'm evil, I haven't even stashed yet...
@PhelypeOleinik All checks passed :)

4:51 PM
@yo' :) I had similar troubles for my tikzducks tshirt. To make the stencils for the different colours I also had to convert all the elements into outlines.
and please tell to whoever had the idea: A very funny contest!

@samcarter_is_at_topanswers.xyz meanwhile, no arara support. :(

Hi experts. Can I ask any question here?

ooh a context free grammar
@C.F.G fire at will :)

Fire
:)

oh no
/quacks in despair

5:00 PM
I have modified extbook.cls to a thesis template. There I have 10 newif. when I compile it using XeLaTeX, it takes almost 2 min. What is the problem?

@C.F.G Background tasks, font stuff, slow computer, aliens, and probably a million more options. :) Without more details, little to nothing can be said. :)

but it is more that 1000 lines.

Seriously, there can be a lot of reasons, but without an actual MWE, we cannot infer, unless @DavidCarlisle uses his crystal ball.

@samcarter_is_at_topanswers.xyz it is! I'll tell it to Kate.

My computer is good. I compile similar files around 30 seconds.
How it is related to font stuff? What is the aliens?

5:09 PM
@C.F.G \newif is definitely not the problem. Are you using TikZ? Are you including large graphics files? These are usually the slowest parts in a document

@C.F.G it is quite easy to add something that slows down compilation. See e.g. tex.stackexchange.com/q/122116/2388. But without more info it is quite impossible to say what slows down your document.

I have inserted TikZ for future usage but I have not used it at all.
This is a small part of Cls file:
\def\version{3.0.0}
\newif\ifAU@project\AU@projectfalse
\newif\ifAU@proposal\AU@proposalfalse
\newif\ifAU@bachelor\AU@bachelorfalse
\newif\ifAU@master\AU@masterfalse
\newif\ifAU@doctor\AU@doctorfalse
\newif\ifAU@print\AU@printfalse
\newif\ifAU@showframe\AU@showframefalse

%\newif\ifAU@english\AU@englishfalse%
\newif\ifAU@EnTitle\AU@EnTitlefalse

\DeclareOption{project}{\AU@projecttrue}
\DeclareOption{proposal}{\AU@proposaltrue}
\DeclareOption{bachelor}{\AU@bachelortrue}
\DeclareOption{master}{\AU@mastertrue}

@C.F.G when I started latex 15 minutes per page was common, so 2 minutes sounds quite good

@DavidCarlisle ooh you are old experienced

@UlrikeFischer \def\z{\z}\z

5:22 PM
@DavidCarlisle: You are talking about 1970?

@C.F.G 85 or so

@DavidCarlisle What was your first computer?
:)

@DavidCarlisle @DavidCarlisle I opened a questin here:
0

I have a loop, that gives a stair-shaped schema of "filled" and unfilled parts. · In in section 1 is all as wanted. The edef-stuff is not really neccessary here, but in section 2 he wants so, so I let it in as a test. · In section 2 should come technically the same, but in a groupplot-environmen...

@C.F.G first one at home was many years later first one I used (an ICL 1900 at Nottingham University which would have been about 1975-77, we had access to it from School)

@DavidCarlisle :)

5:27 PM
@DavidCarlisle ooh you are very old very experienced

@DavidCarlisle loops were not allowed.

@UlrikeFischer loops are for the uncouth, recursion is a more refined technique

5:46 PM
@DavidCarlisle JZ
More chocolatey...

@PauloCereda you shall include the #TeXLaTeX tag...

@yo' oh no
@yo' done, take 2

@UlrikeFischer Ah yes, I had to remove and add a new one, as Twitter does not allow editing tweets. :)

6:35 PM
@PauloCereda I love how Knuth's head is painted differently above and below the glasses <3

@yo' ooh :)
I already have plans for my \$50, so they better give me teh money. :)

@PauloCereda oh

@yo' <3
@yo' in other news, the secret is on its way to Czechia. :)

@PauloCereda Oh no!

oopsie keyboard shift

1 hour later…
8:03 PM
@PauloCereda don't dare ask how your contest submission is taken by the folks here at Overleaf :D

8:49 PM
@yo' ooh more money :)
@yo' ooh tell me

4
@PauloCereda ^^

@PhelypeOleinik yes, indeed! (said by Rowan Atkinson voice in a Monty Python style)

@yo' I could almost hear it :)

@yo' -- The one on the left loos like it's packed in a pumpkin.

9:02 PM
@PhelypeOleinik This style (1:02): youtu.be/fZMoB6ms2mE?t=62

@yo' Oh, Rowan Atkinson is excellent! :-)

@PhelypeOleinik all the short scenes he did with any of Monty Pythons is so great!

@yo' -- Still looks like he's packed in a pumpkin. (Well, it's getting to be that time of year.)

@barbarabeeton Oh no, the CTAN thing

@barbarabeeton oh right
@PhelypeOleinik oh left
@PhelypeOleinik Speaking of British comedy, do you know Whose Line Is It Anyway?

9:22 PM
@yo' No, never heard of it
@yo' Listening right now

9:59 PM
User support. Grumble grumble.

10:13 PM
@yo' awwwwwww <3
@AlanMunn oh no

@AlanMunn what happened?

@UlrikeFischer Me: I need to see some code. User: sends screenshots of editor. Arrgh!

10:28 PM
@AlanMunn it could be worse: is it a Windows editor? :)

10:39 PM
@yo' ooh

@AlanMunn Is the screenshot sent as a Word document?

@yo' ooh spooky :)

11:00 PM
When using biblatex option refsection=chapter do you need any \begin{refsection} ... \end{refsection} commands?