TeX, LaTeX and Friends - 2017-12-16

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2:24 AM

This may seem like a silly question whose answer is found in the manuals, but does \tl_new:c { number of #1 s } create a new token list called \numberof#1s, where #1 is the expanded form of whatever argument was passed to it?

4 hours later…

6:47 AM

I am confused with something that happened a couple of minutes ago.

Community rejected my edition on this question: https://tex.stackexchange.com/questions/405601/cannot-compile-forward-slash (it was on hold). The question appeared in the queue since the OP included the necessary MWE (with no code indentation). I just indented it and waited for the approve. Minutes later, it was rejected (showing this message: This edit conflicted with a subsequent edit) but another person did the same thing in the very precise minute with no problem, and question code indentation was modified finally.

7:07 AM

@Cragfelt I believe that's the normal thing that happens when someone with the "edit without review" privilege edits the question while your edit is waiting to be reviewed.

It doesn't mean that anything was wrong with your edit.

8:00 AM

@Robbie Yes: does c-type expansion of #1 to an N-type argument, then passes that to \tl_new:N

8:10 AM

Out of curiosity: Why are there no _p forms of the if_in tests by default in expl3? Just had a project where a \tl_if_in_p would have been great.

@TeXnician Not just 'by default': they are not possible for the missing cases

@TeXnician The _p forms need to work in expandable expressions (that is what they are for). However, the tl_if_in test is not expandable, so that cannot work (you'd get a low-level error)

8:31 AM

@JosephWright Thanks. I did not notice that.

9:06 AM

Hi, I am back!

Missed you all!

@PauloCereda <3

1 hour later…

10:27 AM

latex-project.org/news/2017/12/15/github-move

6

2 hours later…

12:43 PM

ooh the English are here

@PauloCereda Also a German

@CarLaTeX ooh

@PauloCereda ninguém aqui é inglês

1:02 PM

@DavidCarlisle oh

Harald Hanche-Olsen

1:16 PM

@DavidCarlisle Welsh? Irish? Scottish?

@HaraldHanche-Olsen Português

Harald Hanche-Olsen

And I am Snow White. Pleased to meet you!

@HaraldHanche-Olsen don't trust your stepmother

Harald Hanche-Olsen

good advice!

2:02 PM

@egreg I heard that you are bored from centuries old music played by a lot people making big noises :-)

PFM 2017 Emotional Tattoos 01 Il Regno

@AlanMunn ^^

2:17 PM

@percusse Yes, this morning I was listening to Händel and now to Mozart. Too old.

@egreg Had Bach's Christmas Oratorio on ...

@JosephWright “Jauchzet! Frohlocket!”

@egreg Yup

@JosephWright I surprise people demonstrating them that the final chorale in the Christmas Oratorio is the same melody as “O Haupt voll Blut und Wunden”

2:33 PM

@egreg I don't listen to pop music

... of 18th century :-)

2:46 PM

texdev.net/2017/12/16/…

3:35 PM

Do you know of any way to includegraphis a figure with file name "values_discount=0.7.png"? Right now, the compiler gets confused about the extension...

Harald Hanche-Olsen

@DavidCarlisle This seems to be right up your alley ↑↑ (I know, not your fault. But still.)

3:50 PM

@nbro you can use {} to hide the . or use the ext key to \includegraphics to disable filename parsing and specify the extension explicitly or (easier) use the grffile package or (perhaps) use the next version of graphics where it'll work automatically

4:06 PM

Hi, I can't seem to find this as a question the site, but how can I ensure that some text is written in the default serif font?

I have an environment where the text I write is in sans serif, but I want a specific part to use serifs

@s.harp \textrm{hello}

@David nice thanks :) there are further modifiers on the text like \small and \bfseries, i would have thought that textrm would also remove these. It doesnt though (and thats good for what I need :) )

@s.harp no \texrm{...} is {\rmfamily ....} so it only changes the family axis in the font scheme, just as \bfseries just changes the series (weight) axis, and \small just changes the size axis.

oh, rm stands for "roman"? I thought it stood for "remove", because \mathrm removes the italics in math mode :)

4:24 PM

@s.harp what have the romans ever done for us... (yes rm is roman in \textrm, \mathrm etc)

would \textrm then kill \textitalic, or is italic text different from mathmode italics?

@s.harp \textit{...} is {\itshape...} so just affects the shape axis so no.

Harald Hanche-Olsen

@s.harp Note that this is very different from the old fashioned \rm and \it. You should avoid using those, as they have exactly the effect you were worried about.

@s.harp everything is different about math mode different fonts, different font selection commands , and different logic math font selection commands do not just act on a single axis, they choose the font fully and typically use different fonts to text anyway

Ok thank you everybody for helping me with my problem and satisfying my curiosity!

4:53 PM

hi guys

@x-rw Hello

@x-rw Hi!

@JosephWright my native language is spanish, sorry if they not understanding my basic english

but i want speak with users of this comunity

@x-rw Go forth!

Harald Hanche-Olsen

@x-rw No worry, the natives are friendly. (So long as you don't try to discuss pizza toppings.)

5:04 PM

@HaraldHanche-Olsen hahahah i do not that

or i will not do that

@x-rw all the Italians here are desperate to try real Hawaiian pizza with a proper pineapple and ham topping.

oh speak of the devil....

@JosephWright github.ocm/latex3/latexbug? Interesting domain ;)

@DavidCarlisle :P

@TeXnician Fixed

@DavidCarlisle hahahaha any pizza is very very delicious, i have tried only some

5:34 PM

@DavidCarlisle, @egreg See the mails on the LuaTeX list. I think Hans may not be happy with the various HarfBuzz efforts ...

@JosephWright actually I think he'd think of calling an external harfbuzz as justification of the plan of not building such things into the core they've put a lot of work into the ffi stuff to interface to external libraries, in the end it might even work out...

@DavidCarlisle Yes, but to be usable it will have to be built as part of TL/MiKTeX so whatever he does, it will 'look' like it's built in ...

@JosephWright sure to the end user, but having a developer lua interface that allows to switch in different font handling for different use cases wouldn't be an entirely bad thing, if it worked...

5:57 PM

@JosephWright @DavidCarlisle And I already got code to test ;-)

@x-rw hola, bienvenido!

Soy un pato!

@JosephWright :( But at least he leaves a door open.

@JosephWright I recently had a conversation with Luigi about the problem.

@egreg Yes: Hans won't do it, but someone else can (will, in the end: needs to be done, is amenable to a non-TeX expert looking at it, ...)

6:12 PM

@percusse Is this ironic? It's certainly not to my taste.

@JosephWright We just went to hear that live last week.

@AlanMunn Cool

@JosephWright ums.org/performance/bach-collegium-japan

@JosephWright Something got lost:

\use:x
  {
    \prg_new_conditional:Npnn \exp_not:N \tl_if_novalue:n ##1
      { T ,  F , TF }
      {
        \exp_not:N \str_if_eq:onTF
          {
            \exp_not:N \__tl_if_novalue:w ? ##1 { }
              \c_novalue_tl
          }
          { ? { } \c_novalue_tl }
          { \exp_not:N \prg_return_true: }
          { \exp_not:N \prg_return_false: }
      }
    \cs_new:Npn \exp_not:N \__tl_if_novalue:w ##1 \c_novalue_tl
      {##1}
  }

There is no predicate form.

! Undefined control sequence.
<argument> \tl_if_novalue_p:n

@JosephWright A fix is urgent, I'm afraid.

@egreg Not in the release version ;)

@egreg Fixed on GitHub

@JosephWright Well: it's documented, but not existent.

6:22 PM

@egreg Oh, sorry: I thought you meant my commit to fix that was wrong ...

@egreg You'd like a release today?

@JosephWright The \OR question needs it

@egreg Ah, right

@egreg I would fix that one by using keyval ...

@DavidCarlisle, @egreg Any thoughts on github.com/josephwright/beamer/issues/442? I think I should group the loading of the .nav file ...

@JosephWright Of course, but that's a different matter

@egreg I'll sort it

@DavidCarlisle Thanks!

I have the following configurations for lstdefinestyle:

`\lstdefinestyle{customc}{
belowcaptionskip=1\baselineskip,
breaklines=true,
frame=L,
xleftmargin=\parindent,
language=Python,
showstringspaces=false,
basicstyle=\footnotesize\ttfamily,
keywordstyle=\bfseries\color{green!40!black},
commentstyle=\itshape\color{purple!40!black},
identifierstyle=\color{blue!50},
stringstyle=\color{orange},
}`

However, the results are a bit weird for text enclosed in a \lstinline.

Specifically, this is the result:

user image

It considers values_discount as a identifier.

Never mind...

:)

Essentially, I was using \lstinline to refer to the name of a file, but maybe that isn't a good idea, I can simply make it italic.

7:00 PM

@JosephWright I guess so

7:28 PM

@JosephWright a group would be more the latex way, but I'm not that familiar with what beamer gets up to, although the comments there seem to suggest it's not using the global scope

@DavidCarlisle It all seems to be global ...

2 hours later…

9:33 PM

@egreg Building for release now

@PauloCereda Is the last Sunday before Xmas (tomorrow) any significant in your church? (usually it's the 4th in Advent, this year it's the 3rd though)

@yo' Fourth of Advent?

@JosephWright well, we (civilly) consider 24th to be Xmas already, despite it is the 4th in Advent this year

@yo' Ah

@yo' Here, I think the Church of England have tomorrow as 4th of Advent

@JosephWright interesting. For us it's the 3rd, but we will already have the Nativity Service

9:46 PM

@JosephWright :) Thanks

@yo' For us the last Sunday of Advent is the 24th.

@yo' But there's nothing really special with respect to the other Advent Sundays.

@JosephWright Petra will be happy for the gift!

@yo' I think you are likely right

@yo' Tricky for me as I'm not religious, so I'm working on 'cultural understanding' only

@JosephWright Anglicans very likely consider Xmas starting on midnight Dec 24--25, so Dec 24 is still in Advent.

@yo' Sounds about right (there is a midnight mass here)

I was reading in another context a critique of the modern idea that the day starts at midnight (rather than at breakfast) ...

@JosephWright in Israel the day started at the sunset. So we, for instance, have the Midnight Service at 4pm on the 24th :-)

@yo' Ah, right

@yo' Would be tricky here: we have 'Churches Together' service at 7pm in the middle of the village (I go to that: social event)

9:55 PM

@JosephWright makes a perfect sense to me. However, we prefer either 4pm or 10pm and later because you have the family Xmas dinner on the Eve.

@yo' Ah: high holiday in the UK is the 25th

@JosephWright one difference between the Slavic and Anglo-Saxon world, I'd say :-)

@yo' Seems so

1 hour later…

11:28 PM

@DavidZ I understand. Thank you for the feddback. I am still learning how the community works.

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