{environments} is for general questions related to (La)TeX environments. For questions about environment subcategories like {lists}, {quoting} environments, or {floats} use the appropriate tag instead.

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25
votes
3answers
802 views

Does \newenvironment have a \provideenvironment cousin, as \newcommand has \providecommand?

To avoid the problem of having to decide whether to use \newcommand or \renewcommand, LaTeX has the option of \providecommand. Is there something corresponding to this for environments? I'd like to ...
12
votes
3answers
376 views

How can I typeset a command and its literal equivalent in an environment?

UPDATE: I've opened a follow-up question: How can I typeset an environment and its literal equivalent in an environment? I would like to pass a command and arguments to an environment. The output ...
8
votes
2answers
301 views

How to ignore everything in the document environment?

Yes, you did read the title correctly! I want to ignore everything that is between \begin{document} and \end{document} when I \input a file. I thought that that would be very simple, just use the ...
23
votes
2answers
9k views

How to modify spacing around quotation environment?

I am almost there in my quest to reproduce the rather compact layout of the book I'm translating... one thing to go, though: I successfully used the enumitem package to modify the vertical and ...
16
votes
1answer
620 views

What exactly does \@doendpe do?

Quoting from the LaTeX2e sources: [\@endparenv, \@doendpe] To suppress the paragraph indentation in text immediately following a paragraph-making environment, \everypar is changed to remove ...
16
votes
4answers
496 views

What are the consideration when choosing either newcommand or newenvironment?

The first time I learnt LaTeX, I thought \newcommand properly fits for inline mode and \newenvironment for displayed mode. Later I noticed it is not correct. So the question is What is the rule of ...
10
votes
3answers
812 views

Defining a list environment with multiple optional arguments

I'm trying to define a list environment with multiple optional arguments and with a default values for those arguments. For example, creating a new environment with a name newenv, which accepts two ...
6
votes
2answers
904 views

Turning parts of text on and off

Is there a way to turn certain parts of the text on and off in LyX/Latex ? I'm thinking of having something like an environment (lets call it "TL" for "traffic light") and a parameter t such that if ...
6
votes
2answers
359 views

How can I ignore everything except a specified environment?

In other words, I'd like to have the comment environment of the verbatim package "inverted". I am pretty sure I read about some package allowing this some time ago, but I can't recall its name (nor ...
8
votes
2answers
977 views

How can I define a custom listing environment?

I am trying to define an enviroment for a specific programming language, F#. Here's my code: \definecolor{bluekeywords}{rgb}{0.13,0.13,1} \definecolor{greencomments}{rgb}{0,0.5,0} \definecolor{...
7
votes
2answers
512 views

Solution environment via true/false switch

I would like to create a solution environment that prints a solution in the case where an optional argument is set to true (the default) and hides the solution in the case that the argument is false. ...
34
votes
4answers
9k views

Numbers outside Math environment

Should numbers inside the text be placed inside a math environment? For example, if I am writing ...indent code by 4 spaces..., should I write it this way or ...indent code by $4$ spaces...? ...
28
votes
2answers
2k views

Reliable code for automatic \noindent after specific environments?

This question led to a new package: noindentafter There are a number of environments which I never want to follow up with an indented paragraph. itemize, enumerate, theorem, definition, etc. I ...
12
votes
1answer
1k views

Problem with environment expansion and the Tikz external library.

I've created my own environment mytikz, which basically looks like this (full MWE): \documentclass[a4paper]{article} \usepackage{tikz} \usetikzlibrary{external} \newenvironment{mytikz}{%begin code ...
9
votes
1answer
2k views

define a new Example environment

how can i define a new Example environment like the image shown in the following? this environment should have the following attributes: endmarks must be positioned at the last line, whether it ...
15
votes
2answers
4k views

How to create new table environment

I am working on a book that has many many such tables. Is there a way to create shortcut for the code shown below. I want to make table caption a variable, because in the MWE shown below except \...
13
votes
2answers
2k views

Format a verbatim paragraph

How can I format a verbatim paragraph? I.e. break, fill and join input lines to produce globally balanced output with the lengths of each line approaching the target \textwidth as closely as possible. ...
10
votes
3answers
2k views

An environment for setting \emergencystretch locally

The following environment, copied from this website about dealing with overfull hboxes, allows one to change the \tolerance parameter for just the paragraph(s) it encloses: \newenvironment{tolerant}[...
8
votes
3answers
2k views

Number mhchem reactions and create a \listofreactions

Is there a way to create an environment for reactions defined with mhchem that behaves similarly to equation in terms of numbering the reactions (including a \nonumber command)? Can I get a list of ...
12
votes
4answers
663 views

Opaque error messages given by common environments

This is a public-interest question. The title of the question Why does this error keep popping up even though I clearly fixed it? poignantly expresses a fundamental truth of LaTeX usage: sometimes ...
18
votes
1answer
398 views

How does LaTeX implement environments?

Do you know how LaTeX implements environments? To be more precise, what does \newenvironment{<env-name>}[<n-args>][<default>]{<begin-code>}{<end-code>} in terms of TeX ...
7
votes
1answer
1k views

New environment with minted

I want to create a new environment to transform this: \begin{listing} \caption{some caption} \label{code:label} \begin{minted}[options]{language} My code here \end{minted} \end{listing} ...
4
votes
2answers
25k views

Define a new block environment in LaTeX beamer

I have two kinds of examples in my document. I want to use different colors, say, red and blue. This is what I am doing now. \documentclass[]{beamer} \usetheme{Madrid} \begin{document} \begin{frame} ...
12
votes
3answers
3k views

How to start itemize on same line as text?

I've created a new environment called 'Example' like this: \newenvironment{example} {\textbf{Example:} \begin{itemize}} {\end{itemize}} The environment works fine, but the items are ...
10
votes
4answers
13k views

\overline outside of math mode

If I want to draw an overline over some text, not an equation, how can I do it? \overline seems to only work in math mode, and when used outside of math mode, it automatically says "Missing $ inserted"...
10
votes
3answers
514 views

Adjust environments's behaviour when nested

I would like to define an environment which behaves differently when it is nested. This environment should ignore spaces at the begin and end of the environment. I have this working as I desire when ...
9
votes
4answers
2k views

How to use a \write command inside a \newenvironment ?

I'd like to make a new environment which would store its content in a file, so that I can read that file at another part of the document. More specifically, I want to have an environment {proof} such ...
6
votes
1answer
943 views

Starred equivalent in newenvironment

Let's say I want to use the align-environment in a newenvironment like this: \newenvironment{mequation}{\align}{\endalign} This works fine. However, what if I want to use the starred version of ...
3
votes
1answer
99 views

Extracting commands from environment

In Automatic scaling of tikz images in floatrow I was asking how to scale several images in one row to the same height and to scale the resulting row to linewidth. I would like to automate the ...
10
votes
2answers
1k 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} \...
10
votes
4answers
948 views

How to redefine an environment to produce no output?

I am using the verbatim environment with \begin{verbatim} XXXX \end{verbatim} I would like the option of redefining the verbatim environment so that nothing between \begin{verbatim} and \end{...
10
votes
2answers
168 views

How to implement common layouts instead of misusing tabular environments?

Note: My hope is that this can become a general resource for "use a list instead" comments. If you have suggestions for improvement, please let me know. I often see comments such as This ...
9
votes
2answers
2k views

How to include tabularx/y in a new environment?

I am looking for a way to define a customizable environment for tables in my latex documents. This means: caption and label width of table customized column format (tabular preamble) While this ...
9
votes
3answers
23k views

LaTeX enumerate - bold item with non-bold text

I'm trying to customize the environment enumerate where the \item is bold but the text is not bold. What I've tried is (at the suggestion of one of the google-results): \let\origitem\item \...
8
votes
1answer
2k views

Defining a custom ‘wrapfig’ environment

[ This is an updated version of http://stackoverflow.com/questions/3233031/latex-defining-a-custom-wrapfig-environment ] The wrapfig package interacts badly with the setup and teardown done by \begin ...
5
votes
1answer
1k views

Easy-to-use reference-able environment for restating theorem-like environments?

This question is a development of the same issue as this one; following my own answer and later comment there, I decided it deserves a spin-off. I would like to define an environment for restating ...
5
votes
3answers
2k views

Change color and background behind text of all 'description' environments

I'm new with LaTeX and like to change some parameters of the description environment throughout the document. As minimum, I like to have two arguments: color of text of item and background-color ...
5
votes
2answers
109 views

Line break in a modified proof environment (with show/hide feature)

In the recent post How to define a proof environment which can be displayed/hidden? [combining two TeX solutions], Werner helped me to redefine a proof environment which can be hidden by an optional ...
5
votes
1answer
747 views

How to make “claim” environments look like “theorem” environment?

I am using LyX 2.0.5 with document class article and 'Theorems (AMS)' in the modules. From what I understand, the claim environment copies its style from the remark environment. I'd like it to copy ...
2
votes
2answers
601 views

Making more easy the itemized of item with tabulation system

Actually, isn’t not really a question. (Since my examinations get close, I don't really have the time to search for a solution to my problems.) Rather than using the common \item, I'd like to use ...
12
votes
4answers
1k views

How to pass an optional argument to an environment with verbatim content?

This is an attempt to make clear what happened in this question of xport (now deleted, sorry). The now deleted question included code that tried to make my answer to this question of xport work for ...
5
votes
1answer
681 views

How to prevent pagebreak for a custom environment?

I use the following custom environment emailHeader and macros to format an email header (credits belong to egreg). \definecolor{emailHeaderBackground}{RGB}{225,225,225} \usepackage[framemethod=tikz]{...
5
votes
1answer
348 views

Suppressing remarks when not needed

I have written some remarks in some of my works that are somewhat informal and repetitive in nature (mainly for my own clarification). I was wondering if there is a way of suppressing them when I don'...
4
votes
1answer
334 views

newenvironment: error with \begin{align} and \end{align}

In the example below, an error is caused by \begin{align} and \end{align} but I do not see why: \documentclass{book} \usepackage{amsmath} \newenvironment{subalign}{\begin{subequations}\begin{align}}{\...
4
votes
3answers
379 views

Can't include a 'tabu' inside \newenvironment with cells in the postamble

I'm trying to include a tabu inside a new definition of an environment but it fails if the postamble (enddef) of the new environment includes tabu's contents, so cells. With tabular or tabular* works. ...
3
votes
2answers
546 views

Can this command be converted to environment?

I have a command as follows: \newcommand{\Comment}[1]{&&&#1\tabularnewline\hline} And now I want to convert it to be an environment as follows: \newsavebox{\tempDescription} \...
3
votes
1answer
72 views

Using newcommand inside newenvironment to print a table

I have the following self defined counter and command: \documentclass{article} \newcounter{usecase}[section] \newcommand{\usecasenumber}{\arabic{usecase} \stepcounter{usecase} \newcommand{\usecase}[...
3
votes
1answer
67 views

Producing expandable environments with only optional arguments with LaTeX3 syntax

I am trying to create a new document environment to complete the assembly of a table (simplified for MWE) but I am having a problem combining an expandable environment with an optional only argument. ...
2
votes
1answer
129 views

How do I embed a gather environment within a custom environment?

I've tried defining the following custom environment, but I get errors: \begin{gather} ended by \end{solution} etc... Here's a MWE showing my problem: \documentclass{article} \usepackage[...
1
vote
1answer
468 views

Use Listing in newenvironment

I am trying to do a new environment or command (i tried both) where i can put in the name, description and code of a Method in c++ and it gives me a new section with the MethodName, the code listed ...