Turn off locally one package

Question

In the following code, I would like to show two different formatting styles: one using the package nath output, and another showing the default output.

How can I do that?

% Source : http://tex.stackexchange.com/questions/1023/vertically-asymmetric-size-variation-for-parentheses

\documentclass[10pt,a4paper]{article}
    \usepackage[utf8x]{inputenc}
    \usepackage{ucs}
    \usepackage{amsmath}
    \usepackage{amsfonts}
    \usepackage{amssymb}

    \usepackage{nath} % The usefull package.

    \newcommand{\formulaOne}{\sum_{0 \le i \le m \\ 0 < j < n} P(i,j)}
    \newcommand{\formulaTwo}{1 + \frac{1 + x^2}{1 - \frac{x}{2}}}


\begin{document}

\section{With nath}

\begin{equation}
    ( \formulaOne ) = [ \formulaTwo ]
\end{equation}


\section{Without nath}

\begin{equation}
    \left( \formulaOne \right) = \left[ \formulaTwo \right]
\end{equation}


\end{document}

(Crosslink: the general question is math mode - Incompatibilities with and alternatives to nath - TeX - LaTeX Stack Exchange) — user202729, Dec 05 '22 at 09:40

score 16 · Answer 1 · answered Oct 20 '11 at 13:22

16

The nath package changes too much of the default setting that such a project, even if it was feasible (I don't think so, though), would require a gigantic effort.

The best strategy is to prepare the samples with the standalone class and to import them as PDF graphics.

answered Oct 20 '11 at 13:22

egreg

1,121,712

While Herbert's answer apparently works in this instance, I think this answer is the more generally applicable... – Seamus Oct 20 '11 at 14:08

score 12 · Accepted Answer · answered Oct 20 '11 at 13:33

this works:

\documentclass[10pt,a4paper]{article}
\usepackage{amsmath}
\begin{document}

\section{Without nath}   
\begin{equation}
    \left( \sum_{0 \le i \le m \\ 0 < j < n} P(i,j) \right) 
    = \left[ 1 + \frac{1 + x^2}{1 - \frac{x}{2}} \right]
\end{equation}

\section{With nath}

\makeatletter
\input{nath.sty}
\makeatother
\begin{equation}
    ( \sum_{0 \le i \le m \\ 0 < j < n} P(i,j) ) 
      = [ 1 + \frac{1 + x^2}{1 - \frac{x}{2}} ]
\end{equation}

\end{document}

user202729 · Answer 3 · 2022-12-05T10:21:05.840

An alternative, where you can turn off nath again:

(I'm not responsible if anything breaks. This is only tested in very limited cases.)

Basically with that preamble you have \enablenath and \disablenath. Nevertheless, it doesn't work to do \newcommand\formulaOne because the category code of $^_ changes with and without nath.

(naturally, as unicode-math sets the math code when \AtBeginDocument is called, it will probably not work in that case)

%! TEX program = lualatex
% from https://tex.stackexchange.com/q/32148/250119
\documentclass{article}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
{  % nath does not backup these 4, do it manually
\makeatletter
\catcode`*=11 %letter
\global\let\o@equation\equation
\global\let\o@equation\equation
\global\let\o@endequation\endequation
\global\let\o@endequation\endequation
}
\protected\def\foreachnathcommand#1{#1{addcontentsline}#1{array}#1{atop}#1{backslash}#1{bar}#1{begin}#1{bigcap}#1{bigcup}#1{bigodot}#1{bigoplus}#1{bigotimes}#1{bigsqcup}#1{biguplus}#1{bigvee}#1{bigwedge}#1{breve}#1{check}#1{choose}#1{coprod}#1{ddot}#1{display}#1{displaystyle}#1{dot}#1{dots}#1{downarrow}#1{Downarrow}#1{end}#1{endarray}#1{eqno}#1{er@}#1{fbox}#1{hat}#1{int}#1{label}#1{langle}#1{lbrace}#1{lbrack}#1{lceil}#1{left}#1{leqno}#1{lfloor}#1{math}#1{mathop}#1{oint}#1{over}#1{overline}#1{prod}#1{rangle}#1{rbrace}#1{rbrack}#1{rceil}#1{rfloor}#1{right}#1{scriptscriptstyle}#1{scriptstyle}#1{sqrt}#1{sum}#1{textstyle}#1{tilde}#1{underline}#1{uparrow}#1{Uparrow}#1{updownarrow}#1{Updownarrow}#1{vert}#1{Vert}#1{widehat}#1{widetilde}%
#1{equation}#1{endequation}#1{equation}#1{endequation}%
}
\protected\def\disablenathcommand#1{\expandafter \let \csname#1\expandafter\endcsname \csname o@#1\endcsname}
\protected\def\enablenathcommand#1{\expandafter \let \csname#1\expandafter\endcsname \csname nath@#1\endcsname}
\protected\edef\disablenath{%
\catcode$=3 \catcode^=7
\catcode_=8 \mathcode(=\the\mathcode( \mathcode[=\the\mathcode[ \mathcode<=\the\mathcode&lt; \mathcode)=\the\mathcode) \mathcode]=\the\mathcode] \mathcode>=\the\mathcode&gt; \mathcode,=\the\mathcode, \mathcode;=\the\mathcode; \mathcode!=\the\mathcode`!
\mathcode=\the\mathcode
\foreachnathcommand\disablenathcommand
}
\protected\def\enablenath{%
\catcode$=12 \catcode^=12
\catcode_=12 \mathcode(="8000
\mathcode[=&quot;8000 \mathcode<="8000
\mathcode)=&quot;8000 \mathcode]="8000
\mathcode&gt;=&quot;8000 \mathcode,="8000
\mathcode;=&quot;8000 \mathcode!="8000
\mathcode``="8000
\foreachnathcommand\enablenathcommand
}
\usepackage{nath}
\protected\def\savenathcommand#1{\expandafter \let \csname nath@#1\expandafter\endcsname \csname #1\endcsname}
\foreachnathcommand\savenathcommand
\disablenath
\begin{document}
\section{With nath}
\enablenath
\begin{equation}
    ( 
        \sum_{0 \le i \le m \ 0 < j < n} P(i,j)
    ) = [
        1 + \frac{1 + x^2}{1 - \frac{x}{2}}
    ]
\end{equation}
\section{Without nath}
\disablenath
\begin{equation}
    \left( 
        \sum_{\substack{0 \le i \le m \ 0 < j < n}} P(i,j)
    \right) = \left[
        1 + \frac{1 + x^2}{1 - \frac{x}{2}}
    \right]
\end{equation}
\section{With nath (again)}
\enablenath
\begin{equation}
    ( 
        \sum_{0 \le i \le m \ 0 < j < n} P(i,j)
    ) = [
        1 + \frac{1 + x^2}{1 - \frac{x}{2}}
    ]
\end{equation}
\end{document}

Turn off locally one package

3 Answers3

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