{grouping} is about the grouping mechanism in TeX, and about local and global assignments.
5
votes
1answer
39 views
Can a \newcommand Definition Contain Braces as Substitution Text?
The following example is completely counter-intuitive, but I need this in a bigger definition I'm not including here.
\newcommand{\openbrace}{{}
I need this to start a nested scope.
Is this ...
8
votes
1answer
47 views
Global scope or permanent length or savebox
I am trying to save a minipage width and height in one environment, and use these dimensions in a subsequent environment of mine, to make a picture environment.
The idea is to create a picture on the ...
4
votes
2answers
56 views
How to redefine \label, \ref and \pageref in a way compatible with varioref?
In order to prevent conflicts with labels when gathering exercices from a database, I need to redefine the commands \label, \ref and \pageref to add a local prefix to labels. Unfortunately, the ...
2
votes
1answer
58 views
Modifying section, subsection based on scope?
Using MS Word 2013 I mocked up what I would like to create using LaTeX:
I tried exporting it in LibreOffice using its writer2latex; but that didn't work.
So starting from the sectionbox LaTeX ...
7
votes
2answers
74 views
Coordinate system along line
I would like to draw a coordinate system along some lines in a framework for a structural course. This little coordinate system is called local coordinate system.
At the moment the framework looks ...
3
votes
2answers
33 views
Using before as a Global setting in enumitem
I am working on a small project and am using the enumitem package reasons for beyond this example. I read the docs and managed to produce this example. Currently, I am using the before argument on the ...
0
votes
0answers
19 views
Why does \tiny in \begingroup \endgroup change the linespread? [duplicate]
\documentclass[10pt]{article}
\usepackage[ngerman]{babel}
\usepackage{blindtext}
\setlength{\parindent}{0pt}
\begin{document}
\begingroup
\tiny \blindtext
\endgroup
\tiny \blindtext
...
7
votes
1answer
61 views
Grouping items onto the same line to avoid wrapping
I am authoring a poker-related document and am using the following commands to allow me to display cards:
% Suit image adjustments:
\newcommand{\suit}[1]{\includegraphics[width=8pt, height=8pt]{#1}}
...
6
votes
2answers
116 views
Limit macro/newcommand scope to section
How can I limit the scope of a \newcommand to a \section? This is what I'd like to have:
The command is defined only inside the \section, not globally;
The command scope is that \section and cannot ...
8
votes
2answers
99 views
Defining TeX count in a group
I thought that TeX counts were local definitions, but that is not what I am seeing. I was expecting that if I used \newcount within a group, that the etoolbox \ifdefcounter would say that the counter ...
11
votes
2answers
229 views
Is there a way to limit the scope of \usepackage?
When I tried to use the breqn package suggested by an answer to the question
How do I break a long equation over lines
It managed to break a whole bunch of unrelated equations (equations that did ...
12
votes
1answer
157 views
Is there a way to have an “empty” environment to merely limit scope of declarations?
I am fairly new to LaTeX, so I apologize if this is a beginner question, but I have not found a good way to query for it otherwise.
I have observed that when I use an environment like ...
18
votes
1answer
317 views
] inside an optional argument
I accidentally discovered (here) that a closing square bracket within an optional argument delimited by [ ] can cause problems.
Here is example code illustrating the issue:
\documentclass{article}
...
4
votes
2answers
74 views
Disable chapter separation in \listoffigures and \listoftables
I use \listoffigures and \listoftables. Both commands create line breaks for items from different chapters. How can you stop that?
Screenshot:
2
votes
1answer
79 views
How do I set group headings for an index in Lyx?
I want to set group headings, in form of a corresponding letter, for an index in lyx.
I have one main lyx file, containing links (with include) to other lyx files, placed in a subfolder.
I tried ...
4
votes
0answers
180 views
Attempts to manually change \linewidth ignored by LaTeX
I was going to try to answer the question: How can I change the geometry of a page on the chapter header page only, and return to normal on the next page? It didn't seem like it should
be too ...
17
votes
3answers
272 views
What are the effects of an empty group, {}?
In order to have a syntactic space after a no-argument command, one is taught to delimit the command token with an empty group ({}), like this: \somecommand{} more LaTeX material.
However an empty ...
7
votes
3answers
169 views
When to use or avoid grouping?
For writing my own TeX code, grouping (\begingroup, \endgroup) helps on automatically saving and restoring TeX "variables".
(La)TeX "variables" are either macros or registers. The registers can
...
14
votes
3answers
223 views
What is the difference between local and global in a TeX meaning?
In tikz declare function and babel french option it came to the question about the difference between local and global in a TeX meaning.
In the liked question the babel shorthand ; should be ...
2
votes
2answers
74 views
Why does defining a new command inside a framed block not work?
Why does the following 'minimal working example' work
\documentclass[a4,german]{book}
\usepackage{framed}
\begin{document}
\newcommand{\myText}{Bliblibli!}
\begin{framed}
Blabla
\end{framed}
...
4
votes
1answer
62 views
Grouping Negates Effect of \centering
Why does the use of \begingroup, \endgroup negate the effect of centering in the MWE?
The MWE below yields a left aligned figure (not desired), with subsequent text on the left (desired):
But if ...
2
votes
1answer
76 views
Add a brace on the left side of a group
I can't figure out how to place the brace on the opposite side, that is on the left of the group of equations, when following the answer in this link:
How to put a brace on the right, not left, to ...
0
votes
1answer
97 views
A way of handling \left and \right brackets
I'm looking a way of making something like this:
\underbrace{
\left[\nabla\times
\left[\nabla\times
\left[\ldots\nabla\times
}_{
\infty\text{-times taking curl operator}
}
...
4
votes
1answer
219 views
How to reset \renewcommand\l{\lambda} locally
I have a large document with a lot of equation, the author overwritten the original \l (used to get polish letter ł) with \renewcommand\l{{\lambda}}. It would be to much work to find all the \l in all ...
1
vote
1answer
218 views
Single paragraph with styling and larger \parskip
I'd like to use something like this:
{\bfseries\small Some text here...\setlength{\parskip}{1em}}
More text here in the next paragraph...
In order to increase the spacing after a single paragraph, ...
2
votes
1answer
141 views
Paragraph and subparagraph title inheriting features from TeX group *after* it
I'm getting some strange behaviour when using the color package at paragraph and subparagraph level. See the code snippet below:
\usepackage[usenames,dvips]{color}
\section{A}
{\color{Green} ...
2
votes
1answer
80 views
Why can't I set hyperref's pdfinfo from within a group? (Is it a bug?) [closed]
When I run the following code (using hyperref version 2012/09/27 v6.83g), I do not get any errors or warnings, but the metadata I set using pdfinfo doesn't appear. If I uncomment the \@firstofone ...
8
votes
1answer
99 views
Creating temporary definitions for commands
In the context of writing something like homework solutions for a math class, I often face an awkward situation. Each problem will have some idiomatic functions that are cumbersome and error prone to ...
10
votes
2answers
177 views
How to create *local* labels/refs in LaTeX?
Concise question:
Is there any way to limit the scope in which a \label is visible to a \ref?
Motivation:
My current goal is to create a rather large document, containing many exercises and their ...
8
votes
2answers
301 views
How can I change the text color in such a way that the effect transcends groups?
I'd like to have a command \globalred that makes all subsequent text red, even if the command is issued inside a group. For example, the output of the TeX file
\documentclass{article}
...
2
votes
1answer
82 views
Strange chapter influence on quotation environment
The code below give a strange result when I comment out the \begingroup end \endgroup: the quotation environment has different vertical space to the text before ("Some text").
What is it that chapter ...
3
votes
1answer
451 views
Grouping nodes in tikz
For the MWE below:
\documentclass[a4paper,11pt,twoside]{report}
\usepackage[left=2.5cm,right=2cm,top=2cm,bottom=2cm]{geometry}
\usepackage[T1]{fontenc}
\usepackage{amsmath, graphicx, tikz, enumerate, ...
5
votes
1answer
73 views
Problem setting lengths in an environment (spilling outside of the environment)
I am having with spacing between paragraphs in my document, and I think I have been able to trace back to a custom environment I have defined.
\makeatletter
\def\remarkname{Remark}
...
12
votes
1answer
87 views
Difference between “hbox group” and “adjusted hbox group”?
eTeX's \currentgrouptype distinguishes two types of \hbox group types
\hbox{\showthe\currentgrouptype} % 3 "adjusted hbox group"
\noindent
\hbox{\showthe\currentgrouptype} % 2 "hbox group"
Looking ...
3
votes
2answers
257 views
How to make a recursive macro in (La)TeX?
The following MWE is the code of my attempt translating my working algorithm in C# to (La)TeX. I don't understand why it does not work. Can you probe the source of problem?
Remarks:
#1 is a list of ...
12
votes
2answers
224 views
necessity of braces for accent commands
Many resources on LaTeX teach that "é" and "ä" are typeset with (respectively) \'{e} and \"{a}; and it is similar for other accent symbols. Are the braces really needed? Aren't \'e and \"a shorter but ...
19
votes
2answers
219 views
global confusion
Simply put, when should I care if something is global or not? What does this really mean?
If my package, for example, provides
\newcommand*{\setfooter}[1]{\def\mypackage@footer{#1}}
And I later ...
7
votes
3answers
363 views
Using execute at begin node with \phantom and \pgfuseimage in TikZ?
Problem
I would like to create several nodes whose text is a placeholder for an image, i.e., \phantom{\pgfuseimage{mypicture}}. This is easily done as, for example:
\matrix {
\node ...
15
votes
1answer
145 views
First occurrence of a command
I'm writing some macros that need to behave differently after first occurrence. I decided to use the etoolbox package's toggle. My MWE is as follows:
\documentclass{article}
\usepackage{etoolbox}
...
15
votes
1answer
229 views
Why is \global\let not always global?
As an LaTeX environment opens a local group, it is normally necessary to use a global definition if changes in the environment should be available after the environment:
\documentclass{minimal}
...
0
votes
0answers
265 views
command definition outside \begingroup \endgroup pair not working [closed]
This MWE is from a real case where an error occurs (with a hint about WSF from suffix package, but below the error is different) with \globaldefs=1\relax in a \begingroup \endgroup pair, in order to ...
11
votes
1answer
233 views
What is the scope of elements of TikZ pictures?
I understand that named elements of a tikzpicture cannot be referenced before they are defined; but I'm confused about how "long" a named element persists. It appears that once named, an element ...
18
votes
4answers
416 views
How do I get a value out of a group?
I've just recovered from my first real foray into LaTeX3 programming. It was ... an experience. Not a completely unpleasant one and once I'd gotten used to the syntax then I found it a lot easier ...
1
vote
1answer
159 views
Unexpected scoping issue using \XeTeXinterchartoks
Minimal example (compile with xetex):
\XeTeXinterchartokenstate = 1
\newXeTeXintercharclass \classa
\XeTeXcharclass `\a \classa
\XeTeXinterchartoks 255 \classa = {\begingroup}
\XeTeXinterchartoks ...
11
votes
3answers
753 views
\global\renewcommand equivalent of \global\def
The following MWE works just fine, but I had to resort to using \global\def (not that there's anything wrong with it). The intent of the MWE is to provide access to the value of macro as set in an ...
10
votes
2answers
4k views
Temporarily increase line spacing
How do I temporarily increase line spacing? I have some text on my title page:
\begin{center}
{ \Large \textbf{The Great Thesis About Some Very Great Things Indeed With
a Pretty Long Title That Will ...
5
votes
1answer
811 views
How to globally tikzset styles
I would like to set a tikzstyle from within a tabular environment, and use it after the table. Adding the usual \global seems to have no effect. The MWE below produces:
but I want the last line ...
11
votes
2answers
387 views
\expandafter within a \begingroup … \endgroup [duplicate]
Possible Duplicate:
What does \begingroup\expandafter…\endgroup do?
In many of Heiko Oberdiek's packages one sees this type of construction:
...
8
votes
2answers
367 views
\newtoks token seems to have local scope
I want to collect the first line of a quotation to use later. I have used \newtoks for a similar purpose so tried it here, this way:
\documentclass[12pt] {article}
\newtoks{\qfirstlineinternal}
...
12
votes
3answers
446 views
Use \bgroup and \egroup to set some pre and post code to a macro
Why isn’t it possible to use \bgroup and \egroup in this way?
\documentclass{article}
\def\precode{\fbox\bgroup}
\def\postcode{\egroup}
\newcommand{\mymacro}[1]{\precode#1\postcode}
...
