{sourcecode} is for questions regarding the source code for (La)TeX documents, including syntax questions, style decisions, package sources, etc. For questions about printing code in LaTeX documents, use the {code} tag.

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195
votes
4answers
11k views

What is the use of percent signs (%) at the end of lines?

I see that the code in many packages and examples contains percent signs % at the end of (many) lines. What are they used for? Do they affect the parsing of those lines?
62
votes
12answers
4k views

What are the pros and cons of using hard wrapping, and why is it so common with LaTeX?

It seems that hard-wrapping - i.e. inserting a newline when the line reaches a certain threshold - is extremely common in the LaTeX source when writing technical papers, either by manually inserting ...
62
votes
5answers
8k views

Tool for cleaning LaTeX code

Is there something like indent for LaTeX? I have a collaborator that is using Scientific Workplace and the code it produces is totally messed up; I know I shouldn't expect miracles, but any machine ...
58
votes
5answers
7k views

How can I see the “implementation” of the \LaTeX command?

After reading another question relating to how to see definitions of commands, I tried: \documentclass{article} \begin{document} \show\LaTeX \end{document} But this shows me in my logfile: \LaTex=...
58
votes
4answers
4k views

Defining custom commands is bad style?

I recently received this in a e-mail from my professor Good LaTeX style would preclude creating any of your own commands, counters, etc. (Most journals would reject submissions with user-defined ...
44
votes
2answers
4k views

Styleguide for LaTeX similar to the Google styleguides?

Even though I don't work at Google, the Google Styleguides have been very helpful for me in adopting consistent, readable style conventions for my code. Unfortunately, there is no Google Styleguide ...
31
votes
2answers
2k views

What are coding conventions in LaTeX?

What do I mean by Convention? First of all, allow me to clear myself about the word 'conventions. As most of you already know, coding conventions are a set of guidelines for a specific programming ...
29
votes
2answers
1k views

Are comments safely hidden once the document is compiled?

This is kind of similar to some of the pdf to latex questions but from a different angle. I'm not looking for a complete LaTeX reconstruction method, I want to know if the comments are safely hidden. ...
25
votes
2answers
1k views

How to understand and write LaTeX code?

LaTeX is like a language. In order to write LaTeX code I have to understand the "word" and the "sentences structure". I have searched on wiki, some LaTeX books, but they just give the LaTeX command, ...
25
votes
1answer
21k views

lstlisting line wrapping

How is it possible to let lstlisting wrap lines? I've troubles with following block: \begin{lstlisting}[language=java] public class MeasureStationControllerV0Test { MeasureStationControllerV0 ...
23
votes
6answers
1k views

Why doesn't LaTeX interpret `(` as `\left(` and `)` as `\right)`?

First of all I love LaTeX/MathJax; I use it a lot, but there are couple of things I hate about it. Sometimes the code becomes so messy that I almost can't read it without looking at the output, while ...
23
votes
4answers
6k views

Why can't TeX Live's size be reduced?

I understand that the following question has been answered Why is the MacTeX distribution so large? Is there anything smaller for OS X? but my question differs from it. I just installed MacTeX and ...
22
votes
2answers
2k views

Pretty printing of LaTeX code

In many MWE here on TeX.SE the LaTeX code is written without explanatory comments and as compact as possible. An Example: \documentclass[ngerman,fontsize=12pt,pagesize]{scrreprt} \usepackage{lmodern}...
21
votes
3answers
2k views

When can I safely add an empty line?

I really like spacing my LaTeX to stay organized, but I'm always scared that adding a space will affect the output when all I really wanted to do was separate the "code" a bit. So most of the time I ...
16
votes
2answers
789 views

Location inside a LaTeX source code

When viewing a pdf of a long LaTeX document, it can sometimes be difficult to find where a certain equation or a line in the pdf is located in the source code, as there are no page numbers in the ...
16
votes
1answer
477 views

Are there guidelines on how to read commented sources of LaTeX packages?

I'm trying to read source2e.pdf (texdoc source2e on the command line), but I'm stumped. It seems a rather mysterious tome to me. As I understand from this answer about what arguments a command expects,...
15
votes
5answers
2k views

List of books written in LaTeX with the source available

Is there a list of open source LaTeX books? I've only found these books but I want to know if there is a list with more diversity as this has only mathematical books. I want to find open source books ...
15
votes
2answers
3k views

Colored background in inline listings

I would like to make inline code more distinguishable from the text surrounding it, and I thought that using a background might work (like it is done on the stackexchange pages.) Since I use the ...
15
votes
2answers
2k views

Is there such a thing as a LaTeX code formatter

I was looking for this a while back for JavaScript, but I was wondering a general purpose one exists for all, or most languages. For example for LaTeX I would put the following in a text box $f_i^k+...
14
votes
1answer
337 views

How does minted work from a point of LaTeX-User?

The package minted is one of the most famous package for highlighting source code. But how does it work?
13
votes
1answer
242 views

Possible to have # start a comment that ends at EOL or at next #, whichever comes first?

I'm trying to create a listings language in which the # symbol starts a comment that ends at the end of the line or at the next # symbol encountered, whichever comes first. Of course, I'd like to ...
12
votes
2answers
243 views

Can spaces at the beginning of a line ever cause problems?

To structure my sourcecode, I often use spaces for padding: \newcommand{\st}[1]{% \begin{tabular}{lr} \emph{Student} & \emph{Score}\\ #1 \end{tabular}% } Can this ever cause ...
12
votes
3answers
962 views

Empty line (in code) before enumerate environment

I like my code to look like this: \documentclass{article} \begin{document} \begin{enumerate} \item test text \begin{enumerate} \item 1 \item 2 \item 3 \item 4 \item 5 \end{...
12
votes
2answers
377 views

When is leading/opening whitespace of a line in a tex file important?

According to https://en.wikibooks.org/wiki/LaTeX/Basics#Spaces ... opening space is generally ignored. First of all, I don't know what generally refers to. I came across this using chktex a ...
12
votes
1answer
2k views

What are the standard styles to format LaTeX source code?

In any other programming languages, we have several ways to format our source code. For example, some of the standard styles are: Allman(ANSI) K&R GNU .... Within LaTeX, I couldn't find a neat ...
12
votes
1answer
2k views

Where I can find the source code of pdflatex.exe?

Where I can find the source code of pdflatex.exe? Edit 1 This is quoted from the link given by @TH. pdfTeX is built on top of TeX, written by Donald Knuth cum suis (Liang and so), and eTeX, ...
11
votes
3answers
7k views

How display LaTeX code in LaTeX document?

I'm making Beamer presentation. How I can display LaTeX code inside presentation?
11
votes
3answers
15k views

Writing source code in LaTeX as text

Is there a package that allows source code in LaTeX as text? I rather not use listings package because the code takes too much space. Copy/paste is tedious because the spaces are not preserved.
11
votes
2answers
16k views

What's the best way to typeset C++ codes in latex?

I'm participating in a programming contest and we are allowed to prepare a team reference document which must not exceed 25 pages. Typically we will prepare many code templates and this year I'm ...
11
votes
2answers
14k views

TeXStudio doesn't recognize some commands

I'm starting to use TeXStudio. I'm having some issues, for example with \begin{align*} \sqrt[n]{a}^2-\sqrt[n]{ab}&=m\sqrt[n]{a}\\ \end{align*} When i put the point on align* i get a small ...
11
votes
1answer
2k views

Source Code Indentation

I was wondering if it is possible to indent the code like in most programming languages as shown below: \part \chapter \section \subsection etc. This would make the ...
10
votes
2answers
786 views

What are good packages / techniques for writing more readable LaTeX *code*?

A while ago I stumbled upon the semantic package --- its 'math ligatures' feature in particular --- and the whole way in which I write math-code in LaTeX changed. Instead of \[ \sem{\sigma}_s^x \...
10
votes
2answers
2k views

Folding entire section in AUCTeX?

I'm new to AUCTeX and I wonder: is it possible to fold entire sections or subsections of a LaTeX document for a better overview, so that they are only represented by their headline (kind of a tree ...
10
votes
2answers
238 views

Where can I find a manual for learning the fundamental background of LaTeX source?

I would like to know if there is some manual from which I can learn the bases of LaTeX programming language. I need something universal, not related to some specific package or class, that at the end ...
10
votes
1answer
2k views

Numbers and programming code

This happens when I use programming code and enumeration, how can I add a gap between the numbering and the line numbers of the code. I'm using this in LaTeX Preamble: \usepackage{listings} \lstset{...
9
votes
3answers
12k views

How to put C++ source code into beamer slides [duplicate]

Possible Duplicate: How display LaTeX code in LaTeX document? How do I fit java style source code in one frame in beamer? How do I add C++ formatted and coloured source code to my beamer ...
9
votes
1answer
123 views

Finding METAFONT sources of a specific character

I'm trying to find out the METAFONT source of percent (%) character, which is created by \% with TeX. I am using the Normal CMR10 font. I am doing this, because I want a slightly modified version of ...
9
votes
1answer
745 views

Clean black & white style for minted

I'm using minted to format code in a book. Except for the bw theme, I only see colored styles, which is nice for producing a PDF, but not ideal for printing in black & white. Is there a clean ...
9
votes
1answer
10k views

How to create beamer slides with source code that can be copied?

We are converting our course slides from Powerpoint to LaTeX, to be able to offer all code in a more open format and to let students easily copy code from the slides. However, the latter does not seem ...
8
votes
1answer
335 views

Display of source code in customised (IDE-like) format in PDFLaTeX

I want to put some “C” source code snippets in latex (I am using PDFLaTeX), but I don’t get the result that I want using the “listings” package. What ideally would like to get is the same result as ...
8
votes
2answers
285 views

safe places to skip lines in the source

Ideally, I would like to be able to skip lines before and after \section, before and after many environments (theorem, itemize, enumerate, etc.), between \items in a list, before and after display-...
8
votes
1answer
913 views

Embedding images in tex file as base64 strings?

A commonly asked question on this site is how to embed images directly in a .tex source file, without the need for the image to exist in a separate file. Examples of such questions (often marked as ...
8
votes
2answers
1k views

TeXShop: Force spaces instead of tabs

Is there a way to make TeXShop insert an arbitrary number of spaces when I press the tab key instead of inserting a tab? This functionality is in TeXnicle and I really like it, but TeXShop is my ...
8
votes
1answer
2k views

Enforce a line-break inside \lstinline

I use \lstinline{foo} from the listings package to set pieces of code in regular text. To get automatic line-breaks I use the following options: \lstset{ breaklines=true, breakatwhitespace=true, ...
8
votes
1answer
7k views

Insert code or text file in latex as is?

Question : How can I insert a txt file ( a source code) as such in latex without any change in indentation, tabs, formatting etc? Scenario : Consider I have a text file as below ( It is a part of a ...
8
votes
1answer
1k views

How to cite sourcecode from an svn repository

As part of my thesis I read some sourcecode. Unfortunately this sourcecode is only available as an svn repository. How do I write a reference to it? The shortest way I found of accessing it is: svn ...
7
votes
2answers
3k views

How to put source code in a LaTeX table?

I am comparing source in a paper and I would like to put them in a table, so the differences are easily spotted. I used the following LaTeX code: \begin{tabular}{ | l | l | l |} Option 1 & ...
7
votes
2answers
572 views

Comparing two versions of programming code with LaTeX

I'd like to compare two versions of program with vertical line between them. How can I do this with LaTeX?
7
votes
2answers
6k views

Is there a good definition for highlighting PHP code in listings?

Does someone have a good definition for highlighting PHP code with the listings package?
7
votes
1answer
462 views

Where to find LaTeX commands source code?

I would like to know where can I find the definition of an original command. That is, let's say I want to redefine the command \ref so when I type it, instead of showing just the number of the label ...