2.5.1 Top new questions this week

2.5.1.1 When to use TeX vs LaTeX for package writing

http://tex.stackexchange.com/questions/290306/when-to-use-tex-vs-latex-for-package-writing

So I got into the whole idea of learning plain TeX (or what I think is plain TeX) and it's been very fun and rewarding. I also started writing some macros/packages for my personal use for now. Since  ...
 

- asked by Aayla Secura (28 votes), answered by David Carlisle (32 votes)

2.5.1.2 Why does no one fix eqnarray?

http://tex.stackexchange.com/questions/290568/why-does-no-one-fix-eqnarray

It seems to me that everyone agrees that no one should use the latex built-in eqnarray environment. So much so that packages have been made to fix it, and several alternatives have been made, ie.  ...
 

- asked by Born2Smile (22 votes), answered by KalleMP (2 votes)

2.5.1.3 What is the simplest way to extract a URL from a .bib entry for use in \href     (probably using Biblatex)?

http://tex.stackexchange.com/questions/290611/what-is-the-simplest-way-to-extract-a-url-from-a-bib-entry-for-use-in-href

I am trying to define a new macro with the following syntax: 
\citeimg*{<bibkey>} 
The unstarred form should simply produce 
\citeauthor{<bibkey>}, \citetitle{<bibkey>},  ...
 

- asked by cfr (16 votes), answered by moewe (7 votes)

2.5.1.4 productivity tools

http://tex.stackexchange.com/questions/290081/productivity-tools

I am using latex to write a mathematically dense document which has several hundred differential forms and products. There must be better ways than just typing out the whole equations line by line.  ...
 

- asked by user2714795 (14 votes), answered by A.Ellett (18 votes)

2.5.1.5 \left[ and \right] resizing differently for very similar formulae. Don't know how to fix it.

http://tex.stackexchange.com/questions/290529/left-and-right-resizing-differently-for-very-similar-formulae-dont-know-ho

I have a \newcommand which inserts left and right square brackets around whatever you pass it. 
\documentclass{minimal} 
\newcommand{\foo}[1]{\left[#1\right]} 
\begin{document} 
Since $\foo{B} =  ...
 

- asked by Chrismassy (11 votes), answered by Christian Hupfer (10 votes)

2.5.1.6 Testing ArXiv compilation pipeline before submitting

http://tex.stackexchange.com/questions/290497/testing-arxiv-compilation-pipeline-before-submitting

I have a paper in PDFLaTeX that I want to submit to ArXiv, but I've read in the submission guidelines that there is a 24 hour timeframe to fix errors on the first upload if they don't render  ...
 

- asked by lurscher (11 votes), answered by JP-Ellis (6 votes)

2.5.1.7 Ignored character as control symbol

http://tex.stackexchange.com/questions/290009/ignored-character-as-control-symbol

Exercise 8.2(f) of the TeXbook (by Knuth) says it is not possible for an ignored character to appear in the midst of a control sequence name. But the following works... 
\catcode`\t=9 \def\t{\TeX} \t  ...
 

- asked by user71815 (9 votes), answered by David Carlisle (9 votes)