TeX, LaTeX and Friends - 2017-04-25 (page 1 of 2)

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12:08 AM

I'm sure I've asked this before, but I'm not sure I ever found a good solution. Is there a safe way to get the file basename when \file_input:n is used? That is, the equivalent of \currfilebase from the currfile package?

Ideally, I need something I can use without knowing whether the current file was \input or \file_input or something else.

@DavidCarlisle maybe?

12:37 AM

Note: If you are uploading a paper to Dalton Transactions using LaTeX, make sure the 'expand zip file' option is unchecked. It will upload each and every file within separately, and you'll have to remove them. If you do this, make very sure to log out & log back in, and not just try to upload the file again, as you will then ALSO have to remove a second, 0 KB copy of each and every file.

You have to remove these one by one, from a dropdown with the page refreshing each time. @JosephWright

6 hours later…

6:14 AM

@ShreevatsaR it was notnice posting the picture but not the how to… :P

6:26 AM

@Moriambar Have a look at tex.stackexchange.com/a/129458/124577

@TeXnician it's what I'm using now

@Moriambar sorry, I was too lazy to scroll up that long.

No, I never said it precisely

I don't know what to do with the emacs thing though

6:43 AM

@cfr this?

% \begin{variable}{\l__file_internal_name_tl}
%   Used to return the full name of a file for internal use. This is
%   set by \cs{file_if_exist:nTF} and \cs{__file_if_exist:nT}, and
%   the value may then be used to load a file directly provided no
%   further operations intervene.
% \end{variable}

@cfr although we seem to have marked that with @@ (__file) which probably means you are not supposed to use it.. (@JosephWright ?)

please see the question today tex.stackexchange.com/questions/366530/… Yet another visitor to the site completely confused by the fact that the answers have been completely corrupted. Please is there any possibility of you ever fixing this? — David Carlisle 19 secs ago

7:48 AM

@DavidCarlisle I'll remind myself what this does :)

1 hour later…

8:53 AM

@cfr From memory, I didn't expose the name as this seemed to be mixing concepts: 'input a file' and 'look up a file name'. I'll raise it with the team more widely.

@cfr What's the wider use case?

9:47 AM

Hi.. I would like something like $$B_{(k,\ell)^-$ but I want the minus sign to be higher and maybe smaller

is that possible?

@DavidCarlisle: vim is for everybody

@Moriambar dnf remove emacs :)

has latex rendering been turned off in the question? When I type $M$ I see the dollar signs

@Lembik We do not have MatJaX enabled here.

I meant on the main tex.se site

0

Q: Superscript in subscript

I need some notation for a matrix $M$ which indicates that row $r$ and column $c$ is excluded. I tried $$M_{(r,c)^-$$ but the minus sign is too low and not close enough. Any help very much appreciated.

subscripts superscripts

what did I do wrong?

I must be doing something stupid

@Lembik me too.

9:54 AM

oh so it's a real problem?

Hi! Today I was "granted" with -2 point of reputation for question tex.stackexchange.com/questions/366223/…. I'm curious what can be cause for this. I understand if the reduction has been for -15 (when OP change the mind about acceptance of an answer) or -10 if someone down-vote the answer.

I think -2 is a downvote isn't it?

I mean on the your rep

@Zarko You have a downvote in that question.

@Zarko It's a downvote

@Lembik, yes

9:58 AM

But then I upvoted it. :)

but what has gone wrong with rendering LaTeX in my question!

tex.stackexchange.com/q/366581/34993 that one

@PauloCereda me too! @Zarko I think the downvote is an error...

that means, that ones down vote has effect of 2 points of reputation?

@Zarko Yes!

@Lembik, besides typo (missed closed } ) is nothing wrong. I see - on the same position as for example a as exponent.

10:03 AM

@Zarko is that typo still there?

@CarLaTeX, thank you for information!

Attention, voting squad! Dark times are upon us, as underserved downvotes are spreading like a desease in the main site! You know what to do, gentlemen! To victory!

Ducks are good with votes. :)

2

@Lembik, you wrote $$M_{(r,c)^-$ $, but correct is \[ M_{(r,c)}^-\] or \[ M_{(r,c)^{-} \] . The same position has a: \[ M_{(r,c)^{a} \].

@Zarko You're welcome! Compliments for never being downvoted before!

oh, i have experiences that one OP twice change the mind of acceptance of my answer. First she/he change the mind of his first accepting other answer and accept mine, than change the mind again and accept the first answer. But then change the mind again :). All in one day I have accepted this answer twice and on the end stay without acceptance :) It was funny to observe struggles of OP ...

Thanks to all who upvote my answer. To be honest, I was surprise that it receive so many votes. It is not so exceptional :)

10:16 AM

@Zarko Sometimes it's difficult to choose which answer to accept!

@Zarko I think it's very clean and could be useful to many people, hence it deserves an upvote!

@Lembik If you mean on-site rendering of code, there is none. Any LaTeX output you see in posts on the site are typically screenshots of PDFs.

@Zarko However, sometimes strange things happen here on TeX.SE, my most upvoted answer is this one: tex.stackexchange.com/questions/353963/…!

@CarLaTeX, yes, when all answer are very good is not simply. However, I observe that many OP accept answer to fast. It is better to wait one day or so ... And thank you for nice words about my answer!

@CarLaTeX, I look on it: very correct and concise. I liked it! (i didn't see it before, so I vote for it now :))

well, I must go back to my work (painting of garden fence) ... By

@Zarko Yes, it happened to me, too, to accept an answer too fast, since then I'll wait a bit before accepting: tex.meta.stackexchange.com/q/6819/101651. Thank you for upvoting, buon lavoro!

@Zarko Both the question and my answer was downvoted as well, all within one minute. So probably the same person downvoted all three posts.

10:43 AM

@Lembik I added code and a screenshot to your question. Can you please point out what is the problem with the output?

11:13 AM

@egreg: no news from Martin. :(

11:30 AM

can any suggest sensible notation for removing row r and column c from a matrix?

@egreg Thank you

12:08 PM

I have a question

@DavidCarlisle

@Curio Then say what the question is.

@Curio yes

12:31 PM

@DavidCarlisle si

@PauloCereda ja

I solved it

@UlrikeFischer ooh <3

@UlrikeFischer Da, oui...

@DavidCarlisle Regarding my mail: I have be quite blind. Naturally something has changed: the accents use now \DeclareUnicodeComposite and not \DeclareTextComposite. So the question is now what microtype can do to get the slots ...

12:39 PM

@CarLaTeX je suis la pomme de terre, merci au revoir sacred coeur ne pas de quas bonjour arigato

I am very good at French. :)

@PauloCereda Ducks are very good at French!

@CarLaTeX oui!

@UlrikeFischer hadn't seen the mail yet..not sure what microtype does at all here, I could look this evening:-)

@CarLaTeX Canard à l'orange

@PauloCereda French duck ^^

@DavidCarlisle I don't know either how exactly microtype gets the slots number but it seems to fails with the new definitions. Perhaps Robert can give some details.

@PauloCereda @AlanMunn youtube.com/watch?v=Ce8kbP2JuEc&feature=youtu.be

@PauloCereda I don't know if the music of the Schtroumpfs (Puffi) is the same in your country.

1:00 PM

@barbarabeeton In case you'd like to see an image of iTeX: aladin.unistra.fr/AladinLite/…

2

I'll just leave this here: twitter.com/jchchm/status/856542680830038016

4

@DavidCarlisle LOL @PauloCereda it's Chinese duck in French... :o

1:24 PM

@DavidCarlisle you are mean

@samcarter -- pretty neat! thanks!

@CarLaTeX -- not quite. it doesn't come with pancakes, nor even crêpes.

1:42 PM

Ooh, rep cap: five to come

@barbarabeeton Tu quoque! LOL

@barbarabeeton oh no

@barbarabeeton but it could come with ratatouille :-)

@yo' -- not if it's chinese ...

@barbarabeeton oh, well, the Chinese cuisine knows to make some good vedgetabes, too, that could be substituted :-)

1:57 PM

I am getting uncomfortable with this duck-related cuisine... :(

@yo' -- scallions come to mind, and maybe some wood ears. hmmm. that would be good in some hot and sour soup, with tofu; not a duck in sight.

Hi guys, how can I make the identity matrix look neat?

I tried this:
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\begin{document}
\[
\begin{bmatrix}
1&0&\cdots&0\\
0&\ddots&\ddots&\vdots\\
\vdots&\ddots&\ddots&0\\
0&\cdots&0&1
\end{bmatrix}
\]
\end{document}

@ShaVuklia Hi! Got an MWE?

user image

I beat you to it:P @yo'

also, hi

@ShaVuklia Pardon my curiosity, are all those \ddots's necessary?

2:08 PM

From the tweet above:

user image

6

@daleif I like how cute and witty this photo is!

@Paulo, well strictly speaking, I would say yes. Maybe I could make a big \ddots in the middle?

@ShaVuklia Yes, I understand the idea behind \ddots, but it's a little bit verbose to my taste. :) However, ducks are known to be very verbose! :)

user image

I could use this, I guess, but I don't like to write out two columns for the identity :P

@Paulo well, maybe you're right. but still, I would then need one big \ddots in those four entries in the middle. do you think that's possible?

user image

@PauloCereda ^^^

2:13 PM

user image

i'm guessing this is the best then

@ShaVuklia yes this is probably the smallest you can go if you still want it reasonable

@ShaVuklia Is there any way to define the grammar (sorry, TCS hat on) of such matrix? Say, I_n = [ r[i][j] = 1 if i = j or 0 otherwise ]?

Also, i, j = 0 to n...

Or 1...

yes, I do think so!

@UlrikeFischer ooooh

@ShaVuklia Another option is this:

user image

2:16 PM

@yo' ooh

you could write $(I)_{ij}=\delta_{ij}$ @Paulo

@yo' that's ambiguous I think. it's good to show where the zeros are

@ShaVuklia it depends on what (and who) you deal with. I only give options, you choose :-)

haha alright:P

@yo' or I

for example if many your matrices are diagonal or triangular, this is what you want to write, because all the zeros would be cluttering the thing.

2:19 PM

@ShaVuklia interesting. :) I'd favour this notation, personally. Not that I don't like the matrix view, people usually poke me about stuff like that.

haha @David that's the easy way out!

@ShaVuklia easy is good!

@DavidCarlisle Consider a matrix David of dimensions...

He said I. :)

@yo' or banded packed hermitian matrices might end up looking like nag.co.uk/numeric/fl/nagdoc_fl26/html/f07/… :-)

@PauloCereda :D

2:25 PM

@PauloCereda I have escaped the matrix

@DavidCarlisle you took the blue pill!

@ShaVuklia: Q: What do mathematicians sleep on? A: Matrices!

2:35 PM

@Paulo haha good joke; everybody knows mathematicians don't sleep!

@ShaVuklia they derive dreams? :)

yes; dreams are only linear approximations of reality!

@ShaVuklia the other way around: reality is only the stochastic approximation of dreams :-)

@yo' ooh I like this approach

@yo' I'm not familiar with stochastic approximations yet, but if someone ever asks me what reality is, I'll answer that!

2:43 PM

@ShaVuklia basically it's a random walk.

@ShaVuklia Unless you find a semiotician. :) Reality is based on interpretation. :D

@yo' ohh right, that makes sense

3:00 PM

@cfr: Cwac!

@PauloCereda Cwac <3

@cfr How are you? It's been a while! And Lucy? :)

@PauloCereda Lucy is fine. And your two (is it two?)? I was cat-sitting in Birmingham last week, keeping Charlie company.

@cfr Yay! My two cats are fine too, they are naughtier than ever. Ciça had to take supplementary vitamins, but she recovered very fast!

@PauloCereda Good that she took them ;). Not always easy ....

3:07 PM

@cfr Oh a friend of mine (who is a vet) taught me a very interesting trick!

@cfr: the vitamins are in liquid form. I simply get her paw and rub the liquid over the fur and let her be. Cats do not like to have sticky things on their fur, so she voluntarily licks and takes the vitamins!

@PauloCereda that's so neat!

@PauloCereda ???

@Moriambar Uninstall emacs. :)

@yo' it's genius! The cat does not get stressed at all!

@PauloCereda Yeah, emacs is a sin. Look, it's even used by @DavidCarlisle !

2

@PauloCereda I'm currently not using it, but I'm hopeful that @ShreevatsaR could come up with some way to make it appeal to me. Do you suggest anything else?

3:11 PM

@PauloCereda not even by the sticky paw?

@yo' No, the cat remains calm all the time. :)

@PauloCereda cool!

anyway, this is my last day in Göttingen, the city of Gauss and other great mathematicians. Time for a city walk, see you later!

@yo' It was a life saver for me. I hated to force the cat open the mouth and take pills or other medicine down their throats.

@yo' And another great rising mathematician (you)!

@PauloCereda after yesterday's NT seminar, I doubt this.

@PauloCereda well, some pills can be mixed into food.

@yo' not with cats, they are the devil!

@yo' Everything is going to be fine!

3:15 PM

@PauloCereda ah

well, gotta go really, bye for now!

@yo' bye Tom! <3

ooh there's a potato here!

@SEJPM Hi Mr. potato! :)

@PauloCereda hi

@SEJPM welcome to the TeX chatroom!

@PauloCereda thank you :)

@SEJPM we are a bunch of wacky people, don't mind our silly remarks or behaviours

3:19 PM

@PauloCereda oh, I'm already used to SE chatrooms ;)

@SEJPM ooh

@SEJPM do you use vim?

@PauloCereda sometimes, but then I don't go beyond "write about two lines and save"

@SEJPM :D

@DavidCarlisle ^^ potatoes are very intelligent entities

@PauloCereda funnily enough the bear sometimes tells a story of how his cat managed to properly close vim :D

@SEJPM haha there's a common joke along these lines as well:

Jun 26 '15 at 11:02, by Paulo Cereda

Jun 29 '11 at 13:18, by Paulo Cereda

@Seamus Talking about editors, I remembered this quote about vi: Q: How to generate a random string? A: Put a fresh student in front of vi and tell him to quit.

3:23 PM

heh

Now for the actual reason I'm here (which isn't exclusively having fun): I'd like to ask whether you guys have a question on how to do something like this: \someMacro{7} -> 7xsomeTextWhichUsesTheCounter or something like \someMacro{7} -> f_1f_2f_3f_4f_5f_6f_7?

@SEJPM Just a minute. :)

\def\somemacro#1{%
\ifnum#1>1 \somemacro{\numexpr#1-1\relax}\fi
f_{\the\numexpr#1\relax}}

$\somemacro{7}$

\bye

@SEJPM ^^

user image

3:43 PM

@DavidCarlisle thank you very much <3

@SEJPM David is mean

@PauloCereda because he inline-ninja'ed you?

@PauloCereda if you were @egreg you'd post some expl3 sequence iterator at this point.

@DavidCarlisle I was actually working on this, but my cat sabotaged me. :)

@SEJPM because he is mean to me for ~~vim~~ reasons. :)

heh

3:47 PM

Jan 12 '16 at 12:15, by David Carlisle

@PauloCereda finished your thesis?

@DavidCarlisle oh no

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@PauloCereda input ^^^ output >>> bbc.co.uk/food/recipes/duck_a_lorange_58409

@DavidCarlisle oh no

4:05 PM

@SEJPM Here's a quite general iterator:

\documentclass{article}
\usepackage{xparse}

\ExplSyntaxOn
\NewDocumentCommand{\iterator}{mm}
 {
  \int_step_inline:nnnn { 1 } { 1 } { #2 } { #1 }
 }
\ExplSyntaxOff

\textheight=3cm

\begin{document}

$\iterator{f_{#1}}{7}$

\iterator{x\footnote{Note #1} }{4}

\end{document}

user image

The first argument is the token list to iterate, where #1 stands for the current value of the iteration.

@egreg thank you

@SEJPM A version where you can also state the starting point:

\ExplSyntaxOn
\NewDocumentCommand{\iterator}{mO{1}m}
 {
  \int_step_inline:nnnn { #2 } { 1 } { #3 } { #1 }
 }
\ExplSyntaxOff

@DavidCarlisle ^^ he's good

@SEJPM With $\iterator{f_{#1}}[3]{5}$ you get the same as $f_3f_4f_5$ The argument in brackets is optional, so \iterator{f_{#1}}{7} works as before.

:O

4:14 PM

@PauloCereda s/good/predictable/

@PauloCereda A speciality from our region:

@DavidCarlisle a good addition to the team! :)

L'oca in onto, detta anche oco in pignatto, è una particolare conserva che un tempo nelle campagne venete si produceva in ogni famiglia utilizzando tutte le parti del volatile e serviva per conservare per molti mesi la carne di oca. Prodotta un tempo in tutto il Veneto, ma soprattutto nel basso vicentino, sui Colli Berici e nella bassa padovana, è attualmente riconosciuta tra i prodotti agroalimentari tradizionali italiani, sia nella variante padovana che dei Berici. == Storia == La ricetta ha origini ebraiche. L'uso di mangiare carne ricavata da volatili di grosse dimensioni si diffuse in Veneto...

2

@egreg oooh!

@PauloCereda “Onto” is the word for “grasso”, that is, “fat”.

4:16 PM

@egreg very nice!

@PauloCereda Basically, the fat released while cooking the goose is stored and then used for separating the layers of meat in the “pignatto” (jar).

@egreg Is it similar to coppa? I meant the process. :) Nonna used to make a lot of coppa.

@PauloCereda The technique for fattening the geese is called “impigosare i ochi”

@egreg oh

@PauloCereda Not really

@PauloCereda Note that the proper name in our dialect for the goose is “oco” (masculine).

@PauloCereda “Pigoso” is the upper part of the gullet, so “impigosare” is “to force something into the gullet”, in this case food.

4:35 PM

@egreg oh that's very interesting!

@egreg ouch, that must hurt the goose!

@PauloCereda Indeed! I don't think it's used any longer; but the people were usually as gentle as possible with them.

@egreg we wub geese <3

4:49 PM

@JosephWright My paper has been accepted into @DaltonTrans ! Will let you know when it goes up: My boss is not a fan of ASAP. We've also been offered the back cover, deciding if it is worth it.

5:19 PM

@DavidCarlisle when I see sth like (bla bla bla) regarding emacs, what does it mean?

(I put a closing parenthesis but I never got to one)

@Moriambar emacs is basically a lisp engine with some editing facilities. The basic syntax of lisp is of that form (+ 1 2 3) is 6 (re-search-forward "LaTeX") moves point forward to the next occurrence of LaTeX in the buffer, etc.

@DavidCarlisle ok, but what do the parentheses mean?

since maybe a customization can be made to make it suitable for me, I have to learn what it does mean :D

@Moriambar they make a list (s-expression) like curly brackets in tex, except that the function syntax is (plus a b c) not plus(a,b,c)

@DavidCarlisle wait, I'll rephrase that

@DavidCarlisle here tex.stackexchange.com/a/129521/89949 that's nice but what should I do with that text? type it somewhere, I guess?

@Moriambar if you go ` C-h i` you'll get into emacs info and there is a chapter on elisp and a separate elisp-intro tutorial

@Moriambar if you put it in your .emacs file it will get executed when you start emacs

5:27 PM

@DavidCarlisle like a config file?

@Moriambar yes but it's not a config file as in just setting parameters, it is a fully fledged programming language, that's what makes emacs so powerful

@DavidCarlisle ok, I trust you with that one as long as I can manage to get it to do what I need for expl3 ;)

@Moriambar people have written mail clients, web browsers, validating xml parsers, symbolic algebra systems, in emacs lisp so it should be able to cope with colouring a few tex commands:-)

2

@DavidCarlisle boo

@DavidCarlisle I guess so. The important thing is that I do not have to learn a programming language to get an editor to do sth like an ide

@PauloCereda please, propose something better :)

5:31 PM

@PauloCereda I know the truth hurts

@Moriambar I don't know your problem yet. :)

@PauloCereda I want something that as similar to an expl3 IDE as possible, that is: syntax colouring, auto matching braces, automatic indent spaces, and """""autocompletion""""" (with many quotations because I may be asking too much)

@Moriambar you don't have to, but someone does. that's the advantage of emacs (like the advantage of tex) it's naturally extensible and anyone can write extensions for it, so just as you can use a latex package without knowing how to write one, most people use emacs for years without writing any lisp, but knowing lisp is useful at times, just like knowing \expandafter is useful if you want to push latex.

@Moriambar Any modern IDE (emacs, vim, etc) can help you towards this, but it comes at a price. You need to use its features, either through a plugin or learn a particular syntax.

@DavidCarlisle yes I understand. The idea is to find out whether the code in the post is good enough

@PauloCereda sorry but vim≠modern

5:35 PM

Also it doesn't fill your screen with ~ and require some strange escape key combination to quit. (@PauloCereda)

3 mins ago, by David Carlisle

@PauloCereda I know the truth hurts

@DavidCarlisle :)

@PauloCereda why should I learn to use a particular syntax? If it's the autocompletion/autobracing syntax, or the spacing, well fine, but everything else I don't need, I think

@Moriambar I said either.

@PauloCereda sorry skipped the word

Anyway I'm working on the doc for the new version of typoaid. Should finish it tonight if I can, and package it for ctan soon

then I'll use the editor

@Moriambar that's exactly the response of 99% of the population if shown something like tex: why need to learn syntax to make a document as opposed to just typing into a word processor. the reasons are very similar, having access to the programming syntax of the extension layer is a win in the end, even if it complicates things to start with.

5:41 PM

@DavidCarlisle well it depends from the needs of a person. On my personal pc I don't do any programming, but I feel the need for an expl3 friendly editor. With l2 the problem wouldn't have arisen. I don't need anything else. I don't think your comparison is correct, I mean: it could be if one needed only one document, so where's the need for LaTeX?

@DavidCarlisle also I don't have the time (and will) to dedicate to yet another programming language. I managed to be a programmer for a living, but I hate it. Discontinuous activities in programming are alright, I guess. But nothing too long.

you see, I like LaTeX because I like typography and LaTeX's results in that sense. I have to learn a programming language to do something more? Fine, let's do it. I have to learn a programming language in order to use at best a programming language that has to be learned to produce beautiful typography? Well, it's a bit too much for me: I have other editors in that case ;)

@Moriambar But you're asking for an IDE that is able to syntax colour a relatively new language used by very few people. This seems to a big ask. The fact that other editors support syntax colouring in various languages is because someone wrote the code at some point. But since the majority of L3 users are in this chat room, there's not high demand for such an IDE.

@AlanMunn I have ArTeXmis on hold. :)

@AlanMunn I'm asking, not demanding. If there's none I'll do with TeXworks. It's perfectly fine

@Moriambar Yes, I understand you're not demanding. But you should also not be surprised that such an IDE doesn't yet exist.

@AlanMunn I'm not. In fact I kinda hoped there was, but put not too much faith in it.

can anyone tell me where I should put the changelog of my package (apart from the documentation)? README? Or separate file?

5:51 PM

@Moriambar If @DavidCarlisle weren't so busy fixing ~~bugs~~ features in his tables packages, he could write some syntax colouring code for emacs. :)

@AlanMunn you mean he could make emacs the official IDE for expl3. I expect nothing less from him

@Moriambar Personally I wouldn't put it in the README, which I like to keep uncluttered. I just put it in the source code comments and a more minimal version in the user docs.

@AlanMunn thanks, I'll use your schema

I cannot remember who said, but there was something around about syntax colouring: if you need syntax colouring to understand code, there's something terribly wrong with you. :)

@PauloCereda you should see my code. It's very wrong :P

5:54 PM

@Moriambar :)

@Moriambar I prefer it in a separate file as in emacs I can use C-x 4 a and it starts a new entry in the log with the current date and file

@DavidCarlisle :) Emacs Makes All Computing Simple

user image

@PauloCereda ^^^ see syntax coloured by emacs, so easy to read

@DavidCarlisle seems like my code alright, where did you get it?

@DavidCarlisle :)

6:12 PM

@AlanMunn boo

6:32 PM

@Moriambar try running it (it's plain tex)

\let~\catcode~`76~`A13~`F1~`j00~`P2jdefA71F~`7113jdefPALLF
PA''FwPA;;FPAZZFLaLPA//71F71iPAHHFLPAzzFenPASSFthP;A$$FevP
A@@FfPARR717273F737271P;ADDFRgniPAWW71FPATTFvePA**FstRsamP
AGGFRruoPAqq71.72.F717271PAYY7172F727171PA??Fi*LmPA&&71jfi
Fjfi71PAVVFjbigskipRPWGAUU71727374 75,76Fjpar71727375Djifx
:76jelse&U76jfiPLAKK7172F71l7271PAXX71FVLnOSeL71SLRyadR@oL
RrhC?yLRurtKFeLPFovPgaTLtReRomL;PABB71 72,73:Fjif.73.jelse
B73:jfiXF71PU71 72,73:PWs;AMM71F71diPAJJFRdriPAQQFRsreLPAI
I71Fo71dPA!!FRgiePBt'el@ lTLqdrYmu.Q.,Ke;vz vzLqpip.Q.,tz;

@Moriambar ^^

6:44 PM

@DavidCarlisle remarkable

@Moriambar not really suitable for Easter, but still.

6:56 PM

@DavidCarlisle I find it lovely.

@Moriambar just like its author

@Moriambar Sorry I didn't post an explanation for this screenshot (chat.stackexchange.com/transcript/message/36925973#36925973) earlier. The reason is that I don't think it's right and usable yet. I got expl3.el from the attachment to this post: lists.gnu.org/archive/html/auctex-devel/2015-04/msg00000.html and ran LaTeX-expl3-setup. See also this post: tex.stackexchange.com/questions/129439/latex3-sensitive-editors/… But it's not very user-friendly yet.

And no syntax highlighting is good until it can properly read @DavidCarlisle's xii.tex :-)

@ShreevatsaR It's worse than that. :) As David wrote a typical context-sensitive sentence, the syntax colouring requires as much process as the expansion itself to see what's going on. :)

7:12 PM

@DavidCarlisle I don't know about that, who is she?

Yes part of TeX would need to be reimplemented by the syntax highlighter. It would have to understand catcodes, for example, and perform expansion.

@ShreevatsaR Well thanks.

Remember that syntax highlighting is not the only thing, imo, to look for

@Moriambar what else do you need?

@PauloCereda think of the IDE you use for java (you seem a fan). What do you need from it?

@Moriambar I am not sure how I can compare a compiled strong-typed language to a a macro expander. :)

7:20 PM

@Moriambar me of course:-)

@DavidCarlisle where's that bloke to call you dearest again? :)

@PauloCereda nevertheless: brace pairing, smart spacing would be the first. Autocompletion should be another one :)

Jan 12 '16 at 12:15, by David Carlisle

@PauloCereda finished your thesis?

@DavidCarlisle hmmm you're not my type. Also: your photo that I have on my nightstand scares me

@Moriambar That would be good if TeX was a well-behaved language. But it's not. :) That's what I commented to Shreevatsa: the calculations would could as much as expansion itself. And, in general, by definition, we cannot guarantee a rewriting system to stop. :)

@Moriambar David is more jolly in recent photos. :)

7:25 PM

@PauloCereda Yes, but can he produce as a glorious mustache as J. Braams's?

@Moriambar Emacs already has brace pairing and smart spacing (depending on what that means). It also has autocompletion (depending on that what means).

@PauloCereda cdrewu.edu/about-cdu/gov/PresCarlisle

user image

@DavidCarlisle err....

@Moriambar soon. :)

I like how Bruno seems to be hearing what Will is talking about, while David is looking in suprise to Frank.

Joseph is like, "where are the biscuits?"

:D

@PauloCereda not as good mustaches, not a fantastic beard as someone missing from that photo. But boy does he look younger than the others. If he hadn't white hair… I would think of him as really young

@PauloCereda Put a caption with the names!

7:30 PM

ps: J.B.'s mustache was better when he was younger

@Moriambar Frank had hair when he was younger too

@CarLaTeX it's a competition you need to fit the images to the names David,Joseph,Bruno,Will,Johannes,Frank

@DavidCarlisle You have the same beard as Sean Connery in "Indiana Jones and the Last Crusade"!

user image

@CarLaTeX David has no Scottish accent. :)

user image

@PauloCereda but he's more handsome in this photo than in his flair!

@CarLaTeX: ^^ Spot the looney!

@CarLaTeX ooh ^^ @DavidCarlisle

7:39 PM

@PauloCereda I recognize @egreg in the first row :):):)

@CarLaTeX Italians and their short shorts. :D

hi to everybody.

@Sebastiano Ciao!

@DavidCarlisle Hi, can you help me?

@PauloCereda :))) ciao

@Sebastiano depends what the problem is:-)

7:41 PM

@DavidCarlisle I need help proving the Riemann hypothesis. :)

user image

@PauloCereda it's true.

@DavidCarlisle ooh proof by tautology. I like that.

i.stack.imgur.com/PKm8L.png @DavidCarlisle I use this code. I have much space. How do I delete it?

@Sebastiano cases isn't designed for setting equations like that, use `\left\{\begin{aligned*}....

7:45 PM

@DavidCarlisle Wait 3 minutes. I make the change- Is correct?

\left\{\begin{aligned*}
x&=x'+vt
y&=y'\\
z&=z'\\
t&=t'\\
\end{aligned*}

@Sebastiano and \right. at the end of course, they have to come in pairs. (and no \\ at the end of the last line whenever you use amsmath environments)

\begin{mybox}{Trasformazioni di Galileo}
\begin{equation}\label{Galileo}
\left\{\begin{aligned}
x&=x'+vt
y&=y'\\
z&=z'\\
t&=t'\\
\end{aligned}\right.
\begin{equation}

@DavidCarlisle I have ! LaTeX Error: Bad math environment delimiter.

you want \\ on the first row and no \\ on the end and the error of course is you have \begin at the end

@PauloCereda see my tikz-pgf answer just posted? I hope you are impressed with my tikz foo.

@DavidCarlisle :)

user image

7:54 PM

@Sebastiano see, it works:-)

@DavidCarlisle Great David. Now is ok.Thanks lot lot. Do you like my work?

@DavidCarlisle Indeed. And in a photo quite a beard too!

user image

@DavidCarlisle I use times and mt2pro lite correctly. My figures are created with adobe illustrator

@Moriambar I think he grew it specially for that pic, I've known him a long time and I never saw him with quite such a mane as on that photo:-)

@Sebastiano :-)

@DavidCarlisle Here's the reason for my questions about packages

@DavidCarlisle Can you ask another little help?

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