Questions tagged [grouping]
{grouping} is about the grouping mechanism in TeX, and about local and global assignments.
281
questions
16
votes
2
answers
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Restrict macro to an environment
I am quite a noob when it comes to customising LaTeX/XeLaTeX. I would like to know if there's a way to limit the usage of a macro to a specific environment.
Consider the following macro and ...
- 1,062
27
votes
5
answers
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views
Is there a way to set a *global* key value using `pgfkeys`?
The simple answer to this question appears to be "No"; quoting from the pgf manual:
The setting of a key is always local to the current TeX group.
However, this is very annoying because it means ...
- 155k
6
votes
3
answers
1k
views
Is there a way for a command to have a scope within item?
I defined a command
\newcommand{\done}{\color[RGB]{124, 124, 255}}
Is there a way to use it as
\item \done la-la
instead of
\item {\done la-la}
It bothers me to put brackets all the time.
So ...
- 477
12
votes
3
answers
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views
LaTeX3: how to define a variable locally
I am trying to learn the LaTeX3 syntax. One of the questions I have come up with is how to define a variable, i. e. a macro without arguments in TeX parlance, with local scope within a group.
In TeX ...
- 55.4k
6
votes
2
answers
566
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Name scoping issue (probably)
I'm trying to solve what is clearly a name scoping problem and don't know how to do it. (This discussion is extracted from a poorly-formed question about the same code that I posted yesterday; I've ...
- 3,633
4
votes
1
answer
3k
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How to make a local variable in Plain TeX?
I want to simplify my code below by creating a local variable as a temporary container to save the value of \numexpr#1+#2+#3+#4+#5}.
\documentclass[dvips,dvipsnames,rgb,table]{book}
\usepackage[...
- 47.2k
13
votes
3
answers
701
views
Making register declarations local, Undefining a register (count, toks, etc.)
Is it possible to make \newcount, \newtoks, etc. respect grouping, so that, e.g., \newcount\temp\temp=2{\newcount\temp\temp=1}\showthe\temp gives 2 (instead of 0)?
Relatedly, is it possible to ...
- 2,169
4
votes
1
answer
721
views
Booleans fail in tabular environment
I've got a workaround for this problem, but maybe someone knows a cleaner way to fix it. I'm using the standard packages in TexLive 2009.
Here's the code that doesn't work:
\documentclass{article}
\...
- 143
6
votes
1
answer
858
views
How to display some text based on a condition inside a tabular environment?
I defined a variable \@afwezig that holds people that were not present at a certain meeting.
\long\def\@afwezig{}
\def\afwezig#1{\def\@afwezig{#1}}
Now I want to make the header of the meeting ...
- 610
7
votes
3
answers
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Why are box dimension assignments both local and global?
Consider the following code.
\setbox0 \hbox{XXX}
\fbox{\copy0}
{
\setbox0\hbox{ZZZ}
{\wd0 0pt}
\fbox{\copy0}
}
\fbox{\box0}
This produces three ruled boxes. The two XXXs ...
- 63.1k
152
votes
2
answers
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views
When should one use \begingroup instead of \bgroup?
Is there ever a case when the use of \begingroup is preferred to \bgroup? Obviously, \bgroup is necessary in cases where you need to have balanced braces and thus cannot use {, but when is it ...
- 63.1k