## Top new questions this week:

### Amusing exercise - ouroboros file - Output of TeX includes itself recursively ad infinitum

The question here to write an "ouroboros" in TeX, i.e., a file that includes itself as a figure. In other words, the output should include in it a figure which presents the figure. In a sense, this is ...

{graphics} {pdfpages} {fun} {recursion} {bashful}

### Why is LuaLaTeX so slow and is there anything I can do about it?

A while back I started bumping into issues with LuaLaTex and switched to compiling a project in XeLaTeX. Since then it seems most of my issues have been resolved upstream or are fixable one way on ...

{luatex} {linux} {performance}

### Shorthand for \leftarrow?

Just out of curiosity: As the command \rightarrow has the shorthand \to, is there a corresponding shorthand for \leftarrow?

{symbols}

### Kerning and ligatures in TeX without TeX

I am trying to get the same output as in this answer by topskip (an extended version with comments is presented in the TeX without TeX article). I am getting a paragraph consisting of 6 lines with ...

### command for writing a sequence of numbers

While writing a document with many sequences of numbers (and various lower and upper boundaries), I would like to define a command such as \myscale{1}{6} that would produce: 1 2 3 4 5 6 What ...

{macros} {loops}

### Inserting tokens at end of math mode

One can use \everymath and \everydisplay to insert tokens at the beginning of math mode, but what about inserting tokens at end of math mode? Lets say I want to enclose the math mode material in a ...

{math-mode} {tex-core}

### LuaLaTeX ate my document (properties). How do I get them back?

I use hyperref for a number of reasons, but among other things it sets up the document properties up well. As long as I compile with XeLaTeX that is. As soon as I compile with LuaLaTeX, everything is ...

{hyperref} {luatex} {unicode}

## Greatest hits from previous weeks:

### How to suppress page number?

I've made myself custom title-page, put it in separate .tex file and when I input it, it is numbered with 1. The very next page is numbered with 1 also, and page-number increases on the following ...

{page-numbering}

### What are the most common mistakes that beginners of (La)TeX and Friends make?

I want to collect the most common mistakes, misconceptions, pitfalls, etc that (La)TeX and Friends users make. Please one answer for each mistake, misconception, pitfall, etc. I am only interested in ...

{best-practices} {big-list}

### How to plot multiple plots associated to different colors of a colorbar with pgfplot

I HAVE EDITED THIS THREAD, NEW QUESTION AT THE END First of all, I apologize for my possibly bad English as it is not my mother tongue. My problem is complex but I am going to try to explain it the ...

{pgfplots} {multiple-files}

### How to import pdf image with different color?

I'd like to import a pdf illustrating manifold like this. And I'm using a dark background in beamer, is there any way to change the color of the lines from black to white? Since I've used the codes ...

{graphics}