@DavidCarlisle Cool

@JosephWright plus amusant avec des lettres actives

@PauloCereda 411-3

@DavidCarlisle oh no

@DavidCarlisle ooh la marche futile

@PauloCereda petit-déjeuner

@DavidCarlisle oh no

@PauloCereda mais oui

@DavidCarlisle oh no

@PauloCereda Avez-vous apprécié le match du Cameroun ?

@DavidCarlisle football is boring, let's focus on cricket. :)

@DavidCarlisle ooh

@UlrikeFischer I broke the golden rule: trusted the OP

@DavidCarlisle the catcodes here are different between tl12 and tl13:

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[french]{babel}
\AtBeginDvi{\showthe\catcode`\:}
\begin{document}

toto

\end{document}

@DavidCarlisle the \AtBeginDvi and the begindocument hook are executed in a different order.

@DavidCarlisle I've got one: Australia vs England ODI results: Australia 3 - 0 England

@UlrikeFischer yes I got that far before deleting:-)

I am writing a tcolorbox in my document. I used fontupper=\sffamily to change the font inside it. Then when I include a \section{..} its font is not sans serif. How can I change also the section and subsections etc. font in a tcolorbox?

@tush There are a couple of Q&A sites on which you can post a question, including a mwe, and then people will have a good starting point to come up with an answer which works for your problem ...

... and the answer will not only help you, but contribute to a library of knowledge which will help future users with the same problem. In chat, probably nobody will ever find it again.

@samcarter_xmas_is_coming :)

@samcarter_xmas_is_coming does the same apply to cricket scores? (499-7)

@DavidCarlisle There should be a Q&A site for cricket scores - posts would get as many votes as the score is :)

'\shoveright{args}' in 'multlined' environment do not works as expected when used on the last line, as reported also in the doc. There are some workaround to push to the right the last line?

or even better, always align all lines but the first to the right?

@john I get a bit curious. What do you want to typeset like that?

@mickep it's a very long equation, basically of the form

the problem is that both the two ways of writing the lagrangian are very long, so I would like to split each line. In particular the second form is very long, so I need to split it 3 times.The first line is aligned to left, as it should be, on the second i can use '\shoveright{args}' to push it to the right side, but this do not work on the last line

@john Maybe it will look better if you either indent each of the following rows a bit, or if you use multline(d) instead?

@john hard to understand your example sketch you would be better to make a real example on the Q&A site, the last line of multiline(ed) is always flush right isn't it?

@mickep yes i use multlined inside align to align the lines

@DavidCarlisle yeah later i will open a question and show what i would like to obtain

\documentclass{article}

\usepackage{mathtools}

\begin{document}

\begin{align}
lagranian&=
           \begin{multlined}[t]
 you can write it like this \\
 over several\\
lines
           \end{multlined}\\
&=            \begin{multlined}[t]
 you can also write it like this \\
 over several more\\
lines
           \end{multlined}
\end{align}
\end{document}

@john what do you want to \shoveright ?

i would like to shoveright the underlined lines

@john well the two last lines are already flush right within their respective boxes, so only difference is right aligning the two middle lines rather than centre align. That said, I'd certainly left align here (with a \quad indent)

\documentclass{article}

\usepackage{mathtools}

\begin{document}

\begin{align}
lagranian&=
           \begin{aligned}[t]
& you can write it like this \\
&\quad over several\\
&\quad lines
           \end{aligned}\\
&=            \begin{aligned}[t]
& you can also write it like this \\
&\quad over several more\\
&\quad lines
           \end{aligned}
\end{align}
\end{document}

i don't know what is the right choice, from a point of view of readability. i wanted aligned to the right because that's how i wrote it into my notes

@DavidCarlisle -- Naughty! Suggesting a one-letter control sequence, \x, in a comment on tex.stackexchange.com/q/667322

@john if you mean all the way over by the equation number that would look very odd unless each row is long enough for significant overlap. eg in the above you would not want "lines" to be to the right of "you can write it like this"

@barbarabeeton nothing wrong with \x. \renewcommand\c{...} is a bad idea

@DavidCarlisle -- It's easier to remember the "global" approach, and never get hung up with an "already defined" message.

@john this is not usable:

\documentclass{article}

\usepackage{mathtools}

\begin{document}

\begin{align}
lagranian&=
you can write it like this \\
\tag*{$\hfill over several$}\\
\tag*{$lines$}
\\
&= you can also write it like this \\
\tag*{$ over several more$}\\
\tag*{$lines$}
\end{align}
\end{document}

@barbarabeeton I disagree, why invent a special rule for 1-letter names? using \x is OK re-defining \box is not OK, it is redefinition that is the issue, not the length of name.

@DavidCarlisle -- I've seen too many files where the author uses \def rather than \newcommand with "surprising" effects down the line (like in the bibliography), Really, it's easier to make that unlikely.

@barbarabeeton sure but if you say don't use \def\x and they fix that to \def\box then it's not an improvement. it's \def that is the issue not \x

@DavidCarlisle -- Agreed that \newcommand should be strongly urged. But it's hard to break the habits of some old-timers. (We've had very different "audiences".)

Hi, In LaTeX how to interchange \epsilon and \varepsilon?

and for \varphi and \phi?

I'm asking this because I like varphi more but sometimes I need phi.

And I don't wanna write \varepsilon and \varpi every time so..

"I got this idea while I was asking this so let me check." I think I can use renewcommand to let \ph for \varphi and \vph for phi. Will that work? similarly for epsilon.

@PNDas ` \let\tmp\phi \let\phi\varphi \let\varphi\tmp`

@PNDas yes or that

@DavidCarlisle thanks

@PNDas \newcommand\vph (not \renewcommand) in that case

Hmm yes. I wrote that by mistake.

@DavidCarlisle But how does this work?

@PNDas let (unlike newcommand) copies the current meaning

@DavidCarlisle or \let\x\phi ... :P

@mickep you are just mean and want to upset @barbarabeeton

@DavidCarlisle Just to spare a few letters.

@mickep \letφ\phi ?

@mickep -- As I said to @DavidCarlisle, \x may be okay, but if you ever had to deal with a paper that had \def\i or \def\c and a bibliography full of non-English or US authors, you'd get nightmares.

@barbarabeeton egreg used 7 letters, to make you happy

@DavidCarlisle -- I saw. I might have chosen something different, but that works.

@barbarabeeton I'm just fooling around, teasing @DavidCarlisle a bit

@mickep -- You certainly don't need it, but you have my permission. He deserves it.

@mickep a very bad habit you have picked up from ducks, vim users and others of poor standing that frequent these parts

@barbarabeeton you are not in the first two of those categories

@DavidCarlisle -- That's known as damning with faint praise. But I shall continue to try to be inscrutable.

@UlrikeFischer why is everyone using miniltx this week? tex.stackexchange.com/q/667357

@DavidCarlisle ;-) What errors here?

@UlrikeFischer not sure yet (decided not to look:-)

@DavidCarlisle this here errors:

\input miniltx
\def\color{}
\DeclareRobustCommand\color{}