4.30.1 Top new questions this week

4.30.1.1 \text vs \scalebox
4.30.1.2 Why doesn't LaTeX compile faster?
4.30.1.3 compiling pdftex 2.2 seconds with 2012 vs 29 seconds with 2018 version
4.30.1.4 Why are the standard document classes not being developed further?
4.30.1.5 How can I define a command that uses round parentheses around its arguments?
4.30.1.6 Fill the area between two curves
4.30.1.7 How to draw the following diagram (a wedge of cheese) using pgfplots or tikz?
4.30.1.1 \text vs \scalebox

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=446413

The author of a manuscript I'm editing is using the \medcup macro in the MWE below. We've noticed the scaling it totally off if used inside the \text command. Can anyone explain why? 
... 
[graphics] [amsmath]
 
asked by daleif https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=3929 16 votes
answered by Circumscribe https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=156366 10 votes
4.30.1.2 Why doesn't LaTeX compile faster?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=447197

Looking at what computers can do when it comes to presenting graphics (think games, graphical user interfaces, and so forth), it almost comes of as a surprise to me that I often have to wait for  ... 
[performance] [tex-general]
 
asked by Speldosa https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=3555 15 votes
answered by TeXnician https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=124577 23 votes
4.30.1.3 compiling pdftex 2.2 seconds with 2012 vs 29 seconds with 2018 version

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=446372

I'm not quite sure where to start looking to fix this. I have recently migrated from an old Ubuntu 14.04 box using texlive/2012 to an 18.04 box running texlive-2018. 
old box 
pdfTeX  ... 
[pdftex] [performance]
                                                                                  

                                                                                  
 
asked by patrick-davey https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=168590 12 votes
answered by patrick-davey https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=168590 11 votes
4.30.1.4 Why are the standard document classes not being developed further?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=447184

I don't know whether this question has a clear answer, but I was unable to find anything about this on Google, so here goes. 
Despite the emergence of "rich" document classes like KOMA-Script or  ... 
[memoir] [koma-script] [document-classes] [article] [scrbook]
 
asked by Daniel Steck https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=168903 12 votes
answered by Joseph Wright https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=73 17 votes
4.30.1.5 How can I define a command that uses round parentheses around its arguments?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=446677

I defined a command for probability distributions, for example: 
\usepackage{amsmath} 
\usepackage{xstring} 
\DeclarePairedDelimiterX{\RoundBrackets}[1]{(}{)}{#1} 
... 
[macros] [parentheses]
 
asked by danijar https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=61219 11 votes
answered by Werner https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=5764 15 votes
4.30.1.6 Fill the area between two curves

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=447265

Hi I am trying to fill the area between two curves. One curve is two joined arcs, and the other is one freehand curve. The part I want to fill is the white area. I use the fillbetween library but I  ... 
[tikz-pgf] [fillbetween]
 
asked by noir https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=38083 10 votes
answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 13 votes
4.30.1.7 How to draw the following diagram (a wedge of cheese) using pgfplots or tikz?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=446512

I would like to draw the diagram below using either pgfplots or tikz. 
I am able to draw a cylinder, using the pgfplots manual, but I don't know how to draw a fraction of a cylinder. 
[tikz-pgf] [3d]
 
asked by Anthony Macks https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=139146 10 votes
answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 18 votes