公式环境输出源码

hbghlyj

1. \documentclass{article}
2. \def\[#1\]{\texttt{\detokenize{\[#1\]}}}
3. \def\(#1\){\texttt{\detokenize{\(#1\)}}}
4. \begin{document}
5. Some text before.
6. \[\frac12\]
7. \(\frac12\)
8. Some text after.
9. \end{document}

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可以看到\(,\),\[,\]被重新定义后输出源码.

1. \documentclass{article}
2. \usepackage{amsmath,verbatim}
3. \newcommand\VerbMath[1]{\renewenvironment{#1}{\verbatim\symbol{92}begin\{#1\}}{\symbol{92}end\{#1\}\endverbatim}}
4. \VerbMath{equation}
5. \VerbMath{equation*}
6. \VerbMath{align}
7. \VerbMath{align*}
8. \VerbMath{alignat*}
9. \VerbMath{gather}
10. \VerbMath{gather*}
11. \VerbMath{cases}
12. \VerbMath{array}
13. \VerbMath{matrix}
14. \VerbMath{pmatrix}
15. \VerbMath{eqnarray}
16. \VerbMath{eqnarray*}
17. \begin{document}
18. Some text before.
19. \begin{equation}
20. \frac12
21. \end{equation}
22. Some text after.
23. \end{document}

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可以看到equation环境被重新定义后输出源码.

问题:
如何重新定义$,$$使它们输出源码

hbghlyj

参考tex.stackexchange.com/questions/59980

1. \documentclass{article}
2. \catcode`$=\active
3. \makeatletter
4. \protected\def${\@ifnextchar$\@doubledollar\@singledollar}
5. \def\@doubledollar$#1$${\texttt{\detokenize{$$#1$$}}}
6. \def\@singledollar#1${\texttt{\detokenize{$#1$}}}
7. \makeatother
8. \begin{document}
9. Some text before.
10. $$\frac12$$
11. $\frac12$
12. Some text after.
13. \end{document}

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