Tagged Questions
5
votes
2answers
120 views
\makeatletter explained
I am using the following code in my beamer document to make the frame title's appear in the table of contents:
\documentclass{beamer}
\usetheme{default}
\usepackage{bookmark}
\usepackage{etoolbox}
...
6
votes
3answers
172 views
Why are some characters not allowed in command sequences
From my understanding a control sequence is ended by any non-alphabetic character such that \mycsA is one token, but \mycs1 is two tokens. This means things like starred commands \mycs* are actually ...
11
votes
1answer
144 views
Can the makeatletter/makeatother mechanics lead to parsing problems?
The reason for using \makeatletter/\makeatother has been discussed in many places, for instance in this question.
However I think that this trick of playing around with the "@" character is itself ...
4
votes
1answer
82 views
Symbolic functions: changing catcodes and \tl_rescan:nn
The goal is to have the user input (for the sake of argument) a linear function in one variable, for example 2*x+3 along with the variable (this isn't crucial) and a value for the variable. I would ...
14
votes
2answers
242 views
Removing double negative signs in equations
Intro:
I am attempting to write a macro which can remove any extra negative signs in a general equation:
15.2 + -3.1
would be changed to:
15.2 - 3.1
when using the commands:
...
2
votes
1answer
72 views
Macros and environments that rely on the distinction between space and newline
In most cases, TeX does not distinguish between spaces and newlines. However, inside some macros and environments this distinction matters a lot. Time for a big list? Please edit the CW answer.
This ...
8
votes
1answer
194 views
Passing a TikZ matrix to a TeX macro
When I pass code containing a TikZ matrix to a TeX macro it prints the following error message: ! Package pgfbasematrix Error: Single ampersand used with wrong catcode.
\documentclass{article}
...
9
votes
2answers
224 views
“Activate” active characters in argument passed as macro
Let's say I have some macro (\iPrint in the MWE) that internally uses active characters to interpret its argument:
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
...
12
votes
1answer
324 views
How to redefine @ and . to obfuscate email addresses?
I am writing a small package containing macros I intend to use regularly. Among those macros, I have \mailto with the following definition:
\@ifpackageloaded{hyperref}{%
\def\mailto#1{%
...
28
votes
2answers
580 views
No \makeatletter required?
In typing up some small examples that might create errors in LaTeX (for Documents with typical LaTeX errors), I tried the following:
\documentclass{article}
\def\my@macro#1{-#1-}% This is magic
...
8
votes
4answers
181 views
Having multiple commands with underscores and numbers that start with same text
Recently me and some friends really got into "making everything compilable". More specifically, we need to do a lot of matlab calculations, and then we need to put the results into a tex document.
...
8
votes
2answers
424 views
Change the behavior of carriage return
Define an enhance verse environment, where stroke Carriage return key once make a \\, twice make a \par, three times make a \medskip, four times and more make a \bigskip.
An example would be:
...
25
votes
3answers
653 views
Using indentation to automatically begin and end itemize environments
This is a question one might answer with "Why the hell would you want to do it?!", sort of an experiment.
What I am looking for is a way to write lists with many levels of nestings (notes for school) ...
2
votes
1answer
253 views
Potential problems from passing macro arguments to \verb
I've been working on a command that will typeset snippets of code within a paragraph. I'm aware of listings and company, but I want something that will just typeset the code verbatim and also allow ...
4
votes
3answers
207 views
Why does a defined command appear differently in the align environment?
In the LaTeX document shown below, my definition \comp does not show correctly in the align environment. Why it is this the case?
========== Begin LaTeX scripts =============
...
2
votes
1answer
259 views
Scope of catcode change for escape character ?
In the following macro, I change the category code for the escape character (\) to "other" (12):
\def\xxA{\begingroup
\catcode`\\ = 12
\gdef\xxB ##1z{\tt ##1\endgroup}
\xxB}
How the heck does ...
12
votes
2answers
255 views
Macro to take a character as argument, make it active, then \def it.
I have a XeLaTeX document in which I want some unicode symbols to be auto-substituted, like ¼ → 1/4, » → >>, « → <<. But instead of a long list like
\catcode`\¼=\active\def¼{1/4}
...
6
votes
1answer
650 views
Using tilde `~` in csname in Beamer
In beamer, I would like to be able to use the tilde character ~ in the name of a command sequence. I tried with adjusting catcodes. While this was successful with the standard article class, it failed ...
18
votes
2answers
350 views
How bad is slack \makeatother discipline really?
Following Will Robertson's admission that Fwiw, i'm not aware of any troubles with a missing \makeatother, but you're right. It's a bad habit of mine to omit it, and my own progressive slackness about ...
2
votes
2answers
563 views
ignorespace and unskip in verbatim/listings?
I am writing a \bashDemo macro that will (a) execute its argument in a shell, e.g., bash, script, and (b) display the argument in a listings. So,
\bashDemo
ls -ls > myfiles
\END
will both run ls ...
142
votes
1answer
15k views
What do \makeatletter and \makeatother do?
Many TeX “hacks” begin with \makeatletter and end with \makeatother. What do these commands do?
