11.43.1 Top new questions this week

11.43.1.1 Interaction between \ifcat, \noexpand, and active characters

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746552

I have come across the following oddity. Consider this example: 
\catcode`!=\active 
\let~=\empty \ifcat\noexpand~\noexpand! yes\else no\fi 
\let~=\relax \ifcat\noexpand~\noexpand! yes\else no\fi 
Why ... 
[macros] [tex-core] [conditionals] [catcodes]
 

asked by plante https://tex.stackexchange.com/landing/r/digest?cta=user&id=235275 Score of 10

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 9

11.43.1.2 Differences between \int_compare:nNnTF and \int_compare:nTF

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746786

I'm writing a personal package where I compare some integer variables. Because \int_compare:nNnTF is around 5 times faster than \int_compare:nTF according to expl3 interfaces I tried the comparisons ... 
[expl3]
 

asked by chrispi_cookie https://tex.stackexchange.com/landing/r/digest?cta=user&id=287561 Score of 6

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 5

11.43.1.3 Luatex version and format

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746674

With the usage of the PDF-Tagging we currently try to keep up to date with the versions of lualatex - especially with new and changed capabilities. If I look in the log file I see as first line ... 
[luatex]
 

asked by LeO https://tex.stackexchange.com/landing/r/digest?cta=user&id=48642 Score of 6

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 5

11.43.1.4 Save old command with \let which was redefined in an environment

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746795

I am writing some notes, where for brevity, I want to have a shorthand for arrows: 
\def\->{\ensuremath{\rightarrow}} 
\def\=>{\ensuremath{\Rightarrow}} 
which also improves the readability of ... 
[macros] [renewcommand]
 

asked by one too many https://tex.stackexchange.com/landing/r/digest?cta=user&id=403812 Score of 5

answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 Score of 6

11.43.1.5 Add months or years to dates

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746815

I'd like to add i.e. 18 month to dates in my latex documents. 
For example: By adding 18 months, 26/06/2025 should become 26/12/2026. 
However, I only managed to add days using the datetime2 package: 
\... 
[date] [datetime2]
 

asked by stackoverflow21 https://tex.stackexchange.com/landing/r/digest?cta=user&id=398757 Score of 5

answered by kabenyuk https://tex.stackexchange.com/landing/r/digest?cta=user&id=204924 Score of 6

11.43.1.6 How to align arrow directions in tikz-cd?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746730

In the tikzcd diagram below, the arrows aren't aligned at exactly the same angle, between rows. 
I also have to adjust the rotate fit angle manually, to align the fitted rectangle with the arrows. 
How ... 
[tikz-cd]
 

asked by so primitive https://tex.stackexchange.com/landing/r/digest?cta=user&id=388706 Score of 5

answered by samcarter_is_at_topanswers.xyz https://tex.stackexchange.com/landing/r/digest?cta=user&id=36296 Score of 6

11.43.1.7 How to Draw Lines to the Tip of a Curly Brace

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746646

Is there a simple way to draw lines to the tips of curly braces? 
I'm trying to reproduce this diagram from Wittgenstein's Tractatus as accurately as I can. 
I can't figure out how to reproduce the ... 
[tikz-pgf] [braces] [tikzlibrary]
 

asked by Oodood https://tex.stackexchange.com/landing/r/digest?cta=user&id=160862 Score of 5

answered by MS-SPO https://tex.stackexchange.com/landing/r/digest?cta=user&id=245790 Score of 8