2.39.1 Top new questions this week

2.39.1.1 MWE: Why are example-image-a.png and example-image-a.jpg of different size?

http://tex.stackexchange.com/questions/333701/mwe-why-are-example-image-a-png-and-example-image-a-jpg-of-different-size

According to various tools the images example-image-a.png and example-image-a.jpg from the mwe package both have size 400 x 300 pixels. However, the document 
\documentclass{article} 
...
 

- asked by gernot (24 votes), answered by Heiko Oberdiek (34 votes)

2.39.1.2 Can Tex make a footnote to the footnote of a footnote?

http://tex.stackexchange.com/questions/333415/can-tex-make-a-footnote-to-the-footnote-of-a-footnote

I know how to make a footnote to a footnote with package bigfoot.  Is it possible to make a third layer of footnotes, namely a footnote to the footnote of a footnote? 
I am not kidding.  I do need this  ...
 

- asked by King Chung Lo (19 votes), answered by hbaderts (29 votes)

2.39.1.3 Sorting a comma-separated list with LaTeX?

http://tex.stackexchange.com/questions/333646/sorting-a-comma-separated-list-with-latex

Is there a simple way to sort a comma separated list alphabetically in LaTeX? I tried to write a macro (\sortlist{World, Hello} a^\206\222 "Hello, World") using the l3sort documentation example but it  ...
 

- asked by John (11 votes), answered by Steven B. Segletes (10 votes)

2.39.1.4 Lua reimplementations of PGF math?

http://tex.stackexchange.com/questions/333633/lua-reimplementations-of-pgf-math

I was looking around in the texmf-dist tree for TeXLive 2016 on my system and found an implementation of the pgfmath functions in Lua, bundled in the (undocumented) PGF library luamath in this  ...
 

- asked by zoqaeski (11 votes), answered by Christian FeuersA~\[Currency]nger (12 votes)

2.39.1.5 What, no warning when minipage overflows page?

http://tex.stackexchange.com/questions/333379/what-no-warning-when-minipage-overflows-page

Instead of complaining about a warning message, I am complaining about lack of a warning message. MWE: 
\documentclass{minimal} 
\usepackage{lipsum} 
\begin{document} 
It was a dark and stormy night.\par 
...
 

- asked by RobtA (11 votes), answered by David Carlisle (9 votes)

2.39.1.6 Experience using silence package with fontspec, luatex?

http://tex.stackexchange.com/questions/333898/experience-using-silence-package-with-fontspec-luatex

The following MWE does not work for me: 
% !TeX program = LuaLaTeX 
% !TeX encoding = UTF-8 
\documentclass{minimal} 
\RequirePackage{silence} 
\ErrorFilter*{fontspec}{The} 
\RequirePackage{fontspec} 
...
 

- asked by RobtA (9 votes), answered by egreg (10 votes)

2.39.1.7 Font with Dollars but no line through it

http://tex.stackexchange.com/questions/333533/font-with-dollars-but-no-line-through-it

Is there a font with a dollar sign that only has the parts of the line above and below the S?  Adobe says it is Univers but that $ doesnt match.
 

- asked by user116095 (9 votes), answered by Heiko Oberdiek (12 votes)