Math & Science ⇒ newenvironment - \boxed problem

[domi505]

Hi,

Code: Select all

\newenvironment{test}{\gather\boxed}{\endgather}

It does not border the full argument only the first letter ...

example:

Code: Select all

\documentclass[a4paper]{article}
\usepackage{amsmath}
\newenvironment{test}{\gather\boxed}{\endgather}

\begin{document}
\begin{test}
    123
\end{test}
\end{document}

Any advice?

Thanks a lot,
domi

[localghost]

To me it's not really clear what you are aiming at. So I guess that the empheq package from the mh bundle could be helpful.


Best regards
Thorsten

[domi505]

Sorry that I wasn' clear enough.
I try to get a less command. So I want only to enter

Code: Select all

\documentclass[a4paper]{article}
\usepackage{amsmath}
\newenvironment{test}{\gather\boxed}{\endgather}

\begin{document}
\begin{test}
    123
\end{test}
\end{document}

to get this result

Code: Select all

\documentclass[a4paper]{article}
\usepackage{amsmath}

\begin{document}
\begin{gather}
    \boxed{123}
\end{gather}
\end{document}

I dont know what's wrong with the newenvironment command...

thanks

[gmedina]

Hi domi505,

\boxed requires curly braces to enclose its argument; otherwise, it will only affect the first character after the command. However, if you try to do something like

Code: Select all

\documentclass[a4paper]{article}
\usepackage{amsmath}

\newenvironment{test}
  {\gather\boxed{}
  {}\endgather}

\begin{document}

\begin{test}
    123
\end{test}

\end{document}

then you will obviously get errors during compilation (due to the unbalanced braces in the arguments of \newenvironment). Some days ago, a similar problem was posed in this thread:

Use unbalanced brackets in /newenvironment (sic).

Take a look at phi's response.

[localghost]

newenvironment - \boxed problem - mrunix.de