{programming} is about how (La)TeX can be used as a programming language.

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How can I loop thru a list of inputs that come after \maketitle, yet use that list as part of the \maketitle command?

Question I would like to follow the principle of "don't repeat yourself" and create a single list of inputs, which are actually various versions of the same document in different languages. This ...
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3answers
144 views

How can I create a list as a variable that can be appended and eventually typeset?

Question In languages such as Python, you can define a list like so: example_list = ['apples'] I can append this list like so: example_list.append('oranges') I can print this list using print ...
6
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2answers
81 views

Iterator-like command, where each use expands to an item from list defined earlier

What is the simplest way to create an iterator-like macro (in the functional programming sense) in pdfLaTeX? I'd like to predefine a list of elements (to simplify we can assume that it is plain ...
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0answers
56 views

What is the core of TeX as a programming language? [closed]

Tex (and LaTeX) mix programming elements with typesetting ones. It's often confusing to a beginner to tell them apart. Could anyone show me a list of the very core commands of TeX (and perhaps LaTeX) ...
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1answer
48 views

How does one create a counted command (e.g. TODO) for use in a list?

Pretext: I am aware of packages such as todonotes, todo, and fixme, but this is more of a task for learning LaTeX programming. Therefore, the use of additional packages downloaded from CTAN is ...
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0answers
23 views

Command showing note page of the next frame

This question is based when I read the answer of... Note page showing the next frame I was wondering if it is possible just to define a command like \insertslideintonotes{<scale>} which then ...
4
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1answer
36 views

How to deduplicate and sort a list of \pagerefs?

I have a document comprised of three large, multi-page tables, all of which have links to items in a list of figures at the end. By generating md5 labels when I generate the latex for the tables, I ...
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2answers
45 views

Change location of increasing text length

I have a very specific question and I hope someone can give me the benefit of their experience. I have around 17000 lines of text. I am printing this text onto somewhere around 80 double sided pages, ...
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2answers
139 views

Deleting duplicates from a comma-separated list of strings

This is a followup to Difference in compilation time between two slightly different versions. As became obvious when asking that question, the speed of that compilation is seriously affected by the ...
4
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2answers
167 views

Is it possible to insert C++ code into LaTeX?

I mean C++ doing some calculation not inserting the code as a text.
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1answer
57 views

Delimited \def's and expansion

I try to understand how work the macro named \separator in MWE . \documentclass[]{article} \def\separator#1\separator#2{% \unexpanded{#1}% \ifx*#2% \else , \expandafter\separator\expandafter#2% \fi ...
4
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2answers
359 views

Is it a convenient way to write longer program codes in LaTeX?

Before I only used ifthenelse and for loops, but not complicated data structures. I don't know what is the convenient way to write longer codes. As an example I would like to generate a random ...
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1answer
45 views

How to write totally expanded macro to file (with LaTeX kernel)

I want to write value of the macro \@authortofile to a file. Inside the macro it is another macro which is defined as separator between some words: \def\@separator{\def\@separator{, }} When I try ...
3
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2answers
112 views

Separator between author names (with LaTeX kernel programming)

I try to make my own macro for a typesetting an authors block instead of using package authblk. How can I suppress separator near the fist author of the article. Main condition is to use only LaTeX ...
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0answers
44 views

modify files and convert them to pdf

Say I have a bunch of word documents, powerpoint and excel files. I have some cover photo. I want to convert the files to pdf, add the cover photo and footer to the bottom of each page hello world ...
3
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1answer
94 views

Write/Read values of the LaTeX commands (like \title, \ author etc) in file using Lua

This problem relate with other my question here . I found a solution with pdfpages package thanks to TX.SX: \documentclass[]{scrbook} \usepackage{authblk} \usepackage{pdfpages} ...
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0answers
133 views

Creating a Multiple Choice Math Test with LaTeX and Automating It

I have decided to write an application which can manage test questions related to Mathematics. This application will use LaTeX as an intermediate format between questions and PDF output. Questions ...
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0answers
52 views

New header for moderncv classic style

I would like to achive a header like this for the moderncv classic style. Edit: For convenience I modified the header from the link to be in english. The thing on the left is a header with a table ...
6
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1answer
181 views

Brainf**k Interpreter in LaTeX

Is there a way to build an interpreter for LaTeX to Brainf**k? A short introduction on how to tackle the task would be appreciated.
3
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2answers
82 views

“Runaway argument?” error with \NewEnviron

I have two files. Basically, the main file just loads the environ package and inputs the secondary file. The secondary file creates an environment that basically does nothing, and creates one instance ...
3
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3answers
94 views

Beamer - writing a macro to uncover only item i of a enumerate in a frame

I would like to repeat a certain frame at multiple locations in my talk. However, at each time, I want either all the items to be uncovered or only item i to be uncovered. How do I define a macro ...
4
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1answer
43 views

Weird tipx error

Just for fun I wrote a converter for decimal numbers that prints them in bases < 37: \documentclass{article} \usepackage{fixltx2e,hyperref,ifthen} \usepackage{tipx} \makeatletter \newcount\mod ...
3
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2answers
136 views

Compute the difference between two time points on different dates

This is a follow-up question to How to compute the difference between two time points (e.g., 11:30 am and 01:20 pm => 110 min)?. Consider the code from David's excellent answer here: ...
1
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1answer
58 views

Default spaces between letters in math-mode

Question for TeX-gurus. Sometimes I find that the default spaces between letters in the math TeX-mode is to short. Say, I would prefer to have slightly increased spaces between abc in $abc$. On the ...
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0answers
59 views

How to make listing program ConTeXt at LaTeX ?

I want make listing program Context at LaTeX, my MWE like this : \documentclass[]{article} \usepackage{listings} \usepackage[dvipsnames]{xcolor} \lstset { frame=single, framesep=\fboxsep, ...
20
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3answers
251 views

How to access the last line of a paragraph with LuaTeX

Consider the following code, using traditional TeX programming that through a series of boxing and unboxing, grabs the last line of a paragraph and centers it. \documentclass{article} ...
4
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3answers
82 views

Claim Check Set From A List of Clients

I don't know that this fits here, but here's my question: I'd like to make a set of claim checks from a list of clients so that they can all be printed together within the same PDF. I'm looking for ...
4
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1answer
113 views

How to merge two rows of 2 columns into a single row of 4 columns without modifying the data entry?

At the beginning I designed a table with a huge number of rows of acronyms. The table has two columns and occupies \textwidth, as follows. \documentclass{article} ...
15
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2answers
186 views

\expandafter with \uppercase ordering

As I understand it, the behavior of \expandafter is such that if \a and \b are macros, then \expandafter\a\b will first expand \b then \a. But my understanding must be wrong, because I don't ...
3
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0answers
134 views

How can I programmatically draw a nonlinear writing system with automatic graph relaxation? [closed]

Alex Fink & I have a non-linear written language, UNLWS. Maintaining its grammar document in Google Docs is growing excessively cumbersome, however, because of how much time it takes to load each ...
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2answers
131 views

LaTeX3: If next in input stream is command X or environment X, do Y else Z

Because I write my own document class (okay, I try to ...), this question bothers me for weeks as there are many situation, in which I need something like this. Is there a way to test, if the next ...
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1answer
131 views

How to open AdobeReader with arara?

... strange question you will think and you are right, but there are some features, that are not shown in the PDF-Viewer from TeXworks, tooltips for example. I tried this rule, which executes an ...
6
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2answers
123 views

Reading number from file into variable — How to put a number into my document that increments with every compilation?

I am not that much into TeX/LaTex programming ... but what I want to do is the following: How to put a number into my document that increments with every compilation My ideas so far are: use a ...
3
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1answer
65 views

Conditional structure based on \rand value comparison

I have a simple code that inserts a complex layout for figures and I would like to randomly alternate the position options (for instance, alternating between top and bottom positioning: ...
7
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1answer
203 views

How can I optimize the arara password program?

I have written the following (runable) arara-program, which creates a password-locked pdf with adjustable prohibited access rights: secure.yaml !config # GhostScript-ps2pdf password-security rule ...
2
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1answer
82 views

The inputenc package slows down LaTeX compilation

When using packages inputenc and fontenc I observed that the inputenc package strongly slows the compilation speed. The situation is as follows. Let we have \usepackage[cp1251]{inputenc} ...
6
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4answers
220 views

Multiply fine tuning with a thinspace \,

What I want is a redefinition of command \, to the version \,[N] for given integer N \, % standard usage \,[2] % the same as \,\, \,[3] % the same as \,\,\, and so on The usage of \hspace instead ...
2
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1answer
1k views

Three dots instead of \ldots

When writing the TeX-codes we often use the 6-symbols \ldots command. It should be more comfortable to type merely three dots ... instead. Just the same as for TeX-parsing the minus symbols - or -- or ...
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5answers
183 views

macros, category codes, how to pass stuff with cat codes inside?

The original question is below (it was a bad simplification of the problem I had and also before being edited, it also contained major syntax errors). The problem that originated the question is why ...
4
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2answers
285 views

Parsing and programming in TikZ

Background: I'be been reading the PGF manual (keys section) and today the TeX Book just arrived in the mail and just started reading chapter 7 (How TeX reads what you type) -- feeling like Mickey ...
5
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1answer
134 views

How can I use arara to get a graphics file?

In a standard TeX Live distribution Ghostscript is, to my knowledge, present; it is hidden, but it is there. Edit: Yes, it is under \Texlive\2013\tlpkg\tlgs So to my question: How can I use ...
5
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0answers
56 views

Good resources to understand how LaTeX is constructed layer after layer? [duplicate]

I have been a user of LaTeX for a couple of years now, and I would like to start to be involved in the writing packages. The problem is that currently, a lot of things appear to me as "black magic". ...
5
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1answer
105 views

TikZ programming/macros, \list construct

TikZ 3.0 manual, on page 83, we have (not complete code): \list{--}{\topsep=2pt\itemsep=0pt\parsep=0pt \parskip=0pt\labelwidth=8pt\leftmargin=8pt \itemindent=0pt\labelsep=2pt} #5 ...
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0answers
34 views

How can I get a date object in LaTeX? [duplicate]

I want a date object I can just sprinkle throughout my document at any moment. For example, I might type "Today (\date) happens to be quite nice."
1
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0answers
191 views

Dynamic programming of cheapest cost in LaTeX

From How can I automate the generation of this dynamic-programming graph?, Jubobs helped develop a foreach scheme to draw the paths. I was wondering if LaTeX can find the cheapest path by ...
21
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2answers
336 views

Embed TeX as a typesetting system for an eBook reading application

Are there any projects or information on how to use TeX to typeset texts for screen reading? That is, I want to get the beautiful output of TeX to render in a browser-like desktop application. I want ...
11
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2answers
805 views

Make an C programming language array in LaTeX

Im wondering if I can do some kind of table in LaTeX in order to show my C array nicely in text? I did something like this in KolourPaint: Tried to do the same with LaTeX tables, but with no ...
5
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1answer
85 views

Biblatex field values and comparisons

I would like to change the behavior of printing author names based on the hash field in biblatex. This mwe should demonstrate what I am having difficulty understanding. MWE: \documentclass{article} ...
4
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0answers
36 views

Is there a good reason to define helper macros second? [duplicate]

As a mathematician, my training is to define my terms before I use them. As a computer programmer, I recognize that there are sometimes good reasons to call a method/function/procedure before its full ...
7
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1answer
118 views

Make the pattern of a \def depend on another macro

I would like to set up a macro defined something like this: \def\processline string: #1.#2\relax{\gdef\errorline{#1}} The catch is that the string should be given by the contents of another macro. ...