11.47.3 Can you answer these questions?

11.47.3.1 Less white space in `n` columns table

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747595

Based in the question: Less white space in last column of table and the corresponding answer (by @egreg and comments by @davidcarlisle) I wanted to extend it to a more flexible version for n columns ... 
[tables] [longtable] [tabularx]
 

asked by albert https://tex.stackexchange.com/landing/r/digest?cta=user&id=44119 Score of 2

11.47.3.2 What are "best practices" for PGF/TikZ use of pgfmathparse and friends?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747557

I have encountered (sporadically) comments to the effect that \pgfmathparse, \pgfmathsetlength, and so forth should not be used unless absolutely necessary. For example, it is (I am told) preferable ... 
[tikz-pgf] [pgfmath] [pgfmathparse]
                                                                                  

                                                                                  
 

asked by karlh https://tex.stackexchange.com/landing/r/digest?cta=user&id=305442 Score of 2

11.47.3.3 Bad subscript typesetting with IBM Plex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747539

The code 
\documentclass{article} 
\usepackage{unicode-math} 
\setmathfont{IBM Plex Math} 
\begin{document} 
$F_0$, $P_0$, $V_0$ 
\end{document} 
produces output 
with the subscripts much too close to ... 
[luatex] [unicode-math] [math-fonts]
 

asked by Karol SzumiAo\202o https://tex.stackexchange.com/landing/r/digest?cta=user&id=13089 Score of 5

answered by kabenyuk https://tex.stackexchange.com/landing/r/digest?cta=user&id=204924 Score of 0