9.4.1 Top new questions this week

9.4.1.1 "Hat" environment
9.4.1.2 I want to write a LaTeX document in Yiddish
9.4.1.3 Error for angles in radians
9.4.1.4 How to give hints to fix kerning of "Two" in sffamily
9.4.1.5 How to loop through every character of an argument in TeX
9.4.1.6 How do I create a pen that only draws on the right side of the path?
9.4.1.7 After uploading to ctan, how to access the newly uploaded package as quickly as possible
9.4.1.1 "Hat" environment

https://tex.stackexchange.com/landing/r/digest?cta=question&id=671883

For my quantum physics class, I need to prove some commutation relations with operators, but it quickly becomes tedious to write \hat{A} every time I want to write an operator. 
So I was wondering if ... 
[symbols] [environments]
 
asked by IsaKEKW https://tex.stackexchange.com/landing/r/digest?cta=user&id=262171 Score of 14
answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 6
9.4.1.2 I want to write a LaTeX document in Yiddish

https://tex.stackexchange.com/landing/r/digest?cta=question&id=671518

I'm trying to find Yiddish support in LaTeX. There's the Makor2 package, which has an elegant solution, but it depends on Omega and Lambda, which are discontinued. Is there any easy way to write in ... 
[languages]
 
asked by Jeremy Gross https://tex.stackexchange.com/landing/r/digest?cta=user&id=115728 Score of 10
answered by Javier Bezos https://tex.stackexchange.com/landing/r/digest?cta=user&id=5735 Score of 11
9.4.1.3 Error for angles in radians

https://tex.stackexchange.com/landing/r/digest?cta=question&id=672045

When I want to insert the value of an angle equal to pi radian in my file with the command \qty{\pi}{\radian} I get an error "Package siunitx Erro : Invalid number '\pi' 
how to make appear in ... 
[siunitx]
 
asked by Nicolas https://tex.stackexchange.com/landing/r/digest?cta=user&id=231550 Score of 9
answered by Joseph Wright https://tex.stackexchange.com/landing/r/digest?cta=user&id=73 Score of 14
9.4.1.4 How to give hints to fix kerning of "Two" in sffamily

https://tex.stackexchange.com/landing/r/digest?cta=question&id=671896

Is there any way to improve sffamily kerning globally? (for example in my document preamble; I really don't want to edit font files or system settings) 
The Tw combination looks awful; Two is even ... 
[pdftex] [kerning]
 
asked by Jason S https://tex.stackexchange.com/landing/r/digest?cta=user&id=46076 Score of 7
answered by Ulrike Fischer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2388 Score of 8
9.4.1.5 How to loop through every character of an argument in TeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=671664

I'd like to implement an easy foreach-loop, which takes two arguments a^\200\224 a string and an expected formatting for every character (optionally except last), as follows: 
\spell{example}{\x-}, which ... 
[foreach] [loops]
 
asked by chzzh https://tex.stackexchange.com/landing/r/digest?cta=user&id=203369 Score of 7
answered by wipet https://tex.stackexchange.com/landing/r/digest?cta=user&id=51799 Score of 8
9.4.1.6 How do I create a pen that only draws on the right side of the path?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=671503

Let's say I have a path that represents the inside dimensions of a room. I would like to draw a thin line representing that inside space. But I would also like to draw the thickness of the walls. The ... 
[metapost]
 
asked by guidoism https://tex.stackexchange.com/landing/r/digest?cta=user&id=134779 Score of 7
answered by mickep https://tex.stackexchange.com/landing/r/digest?cta=user&id=52406 Score of 5
9.4.1.7 After uploading to ctan, how to access the newly uploaded package as quickly as possible

https://tex.stackexchange.com/landing/r/digest?cta=question&id=671908

Scene: 
After I upload a package, I will receive an email with the following prompt: 
Thanks for the upload. I've installed the new version and updated the catalog repository. 
The changes should become ... 
[ctan]
 
asked by Clara https://tex.stackexchange.com/landing/r/digest?cta=user&id=238422 Score of 6
answered by Joseph Wright https://tex.stackexchange.com/landing/r/digest?cta=user&id=73 Score of 9