3.4.1 Top new questions this week

3.4.1.1 Any difference between \newcommand \foo  foo  and \newcommand \foo [0] foo ?

http://tex.stackexchange.com/questions/350006/any-difference-between-newcommand-foofoo-and-newcommand-foo0foo

I have a co-author who defines many macros as e.g. \newcommand{\foo}[0]{foo}, explicitly giving the number of arguments even when ita^\200\231s zero, where I have always previously used and seen  ...
 

- asked by Peter LeFanu Lumsdaine (16 votes), answered by David Carlisle (21 votes)

3.4.1.2 How to Finish this Complex Plot using Tikz?

http://tex.stackexchange.com/questions/349722/how-to-finish-this-complex-plot-using-tikz

One more time, I am trying to get a rather complex figure in tikz and I can't. This is the output I desire: 
This is my best attempt so far: 
And this is the MWE of my best (yet poor) attempt: 
...
 

- asked by HA~(c)ctor (14 votes), answered by TorbjA~,rn T. (19 votes)

3.4.1.3 How do you pronounce letters generated with \Bbb and \mathbb?

http://tex.stackexchange.com/questions/349996/how-do-you-pronounce-letters-generated-with-bbb-and-mathbb

I'm writing LaTeX to speech software. 
In LaTeX, I pronounce R as "Boldface Ar". 
How should I pronounce $$\Bbb R$$?
 

- asked by Akiva (11 votes), answered by Chris H (23 votes)

3.4.1.4 How can I use \not with more than one symbol?

http://tex.stackexchange.com/questions/349500/how-can-i-use-not-with-more-than-one-symbol

When using \not in math mode only the following symbol gets crossed, is there any way to apply it to more than one symbol evenly as if it were one operator? 
I tried \not{<:} but it doesn't work.  ...
 

- asked by Panayiotis (11 votes), answered by Ruben (9 votes)

3.4.1.5 \emph   no longer works as expected in XeLaTeX / LuaLaTeX

http://tex.stackexchange.com/questions/350008/emph-no-longer-works-as-expected-in-xelatex-lualatex

Compiling with either XeLaTeX or LuaLaTeX, \emph{} no longer displays text as expected, i.e. in italics. \textit{} works fine. Here is a MWE demonstrating the issue. 
\documentclass{article} 
...
 

- asked by pictho (10 votes), answered by David Carlisle (9 votes)

3.4.1.6 If newlines are converted to spaces, then where does catcode 5 come into the picture?

http://tex.stackexchange.com/questions/349607/if-newlines-are-converted-to-spaces-then-where-does-catcode-5-come-into-the-pic

My goal is to understand the relationship between character bytes and character tokens with respect to new line bytes. I likely do not have my facts straight. 
When TeX reads a file of bytes, encoding  ...
 

- asked by macmadness86 (9 votes), answered by David Carlisle (15 votes)

3.4.1.7 How do I align enumerated equations to the left and text to the right?

http://tex.stackexchange.com/questions/349497/how-do-i-align-enumerated-equations-to-the-left-and-text-to-the-right

I am listing a few relations with short and descriptive statements about them. The way I envision it, I'm trying to put relations on the left and labels on the right, aligned with respect to the left  ...
 

- asked by giusti (9 votes), answered by Werner (13 votes)