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如何在 .cls 中添加新的 komavar 以在 .lco 中使用？

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如何在 .cls 中添加新的 komavar 以在 .lco 中使用？

我想添加\newkomavar到我的.cls文件中并在.lco文件中使用它。

但似乎 .lco 在 .cls 之前被调用，因此不起作用。如何定义新的 koma 变量并在 .lco 文件中使用它们？

.cls

\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{businessletter}[2023-04-20 business letter]

\DeclareOption*{\PassOptionsToClass{\CurrentOption}{scrlttr2}}
\ProcessOptions\relax
\LoadClass{scrlttr2}

\newkomavar[IBAN]{fromiban}
\newkomavar[BIC]{frombic}

.lco

\ProvidesFile{DonaldDaisy.lco}[2023/04/20]%

\setkomavar{frombank}{Sparkasse Entenhausen}
\setkomavar{fromiban}{DE98~1605~0000~7512~0130~19}
\setkomavar{frombic}{WELADED2PMB}

.tex

\documentclass[fontsize=12pt,
               DonaldDaisy,
              ]{businessletter}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[ngerman]{babel}
\usepackage{ebgaramond}
\usepackage{blindtext}

\begin{document}
    \begin{letter}{Max Mustermann\\Musterstraße 1\\12345 Musterstadt}
        \opening{Hello,}
        \Blindtext
        \closing{Mit freundlichen Grüßen}
    \end{letter}
\end{document}

答案1

使用\documentclass加载lco-files已被弃用并会导致警告：

Class scrlttr2 Warning: loading of LCO via class option `DonaldDaisy'.
(scrlttr2)              Note: Loading a LCO via class option is deprecated.
(scrlttr2)                    You should use `\LoadLetterOption{DonaldDaisy}'
(scrlttr2)              instead.

因此你应该使用：

\begin{filecontents*}{businessletter.cls}
\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{businessletter}[2023-04-20 business letter]

\DeclareOption*{\PassOptionsToClass{\CurrentOption}{scrlttr2}}
\ProcessOptions\relax
\LoadClass{scrlttr2}

\newkomavar[IBAN]{fromiban}
\newkomavar[BIC]{frombic}
\end{filecontents*}

\begin{filecontents*}{DonaldDaisy.lco}
\ProvidesFile{DonaldDaisy.lco}[2023/04/20]%

\setkomavar{frombank}{Sparkasse Entenhausen}
\setkomavar{fromiban}{DE98~1605~0000~7512~0130~19}
\setkomavar{frombic}{WELADED2PMB}
\end{filecontents*}

\documentclass[fontsize=12pt,
              ]{businessletter}

%\usepackage[utf8]{inputenc}% not needed since LaTeX 2018/04/01
\usepackage[T1]{fontenc}
\usepackage[ngerman]{babel}
\usepackage{ebgaramond}
\usepackage{blindtext}

\LoadLetterOption{DonaldDaisy}

\begin{document}
    \begin{letter}{Max Mustermann\\Musterstraße 1\\12345 Musterstadt}
        \opening{Hello,}
        \Blindtext
        \closing{Mit freundlichen Grüßen}
    \end{letter}
\end{document}

相反。我甚至建议不要在包装类中定义新变量，而是在 lco 文件或包装包中定义，这样它们也可以与包一起使用scrletter，因此也可以与scrletter作为包装类的scrartcl类一起使用scrletter：

\begin{filecontents*}{businessletter.cls}
\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{businessletter}[2023-04-20 business letter]
\LoadClassWithOptions{scrletter}
\LoadLetterOption{businessletter}
\end{filecontents*}

\begin{filecontents*}{businessletter.lco}
\ProvidesFile{bussinessletter.lco}[2023-04-20 business letter]
\newkomavar[IBAN]{fromiban}
\newkomavar[BIC]{frombic}
\end{filecontents*}

\begin{filecontents*}{DonaldDaisy.lco}
\ProvidesFile{DonaldDaisy.lco}[2023/04/20]%

\Ifkomavar{fromiban}{}{\LoadLetterOption{bussinessletter.lco}}
\setkomavar{frombank}{Sparkasse Entenhausen}
\setkomavar{fromiban}{DE98~1605~0000~7512~0130~19}
\setkomavar{frombic}{WELADED2PMB}
\end{filecontents*}

\documentclass[fontsize=12pt]{businessletter}

%\usepackage[utf8]{inputenc}% not needed since LaTeX 2018/04/01
\usepackage[T1]{fontenc}
\usepackage[ngerman]{babel}
\usepackage{ebgaramond}
\usepackage{blindtext}

\LoadLetterOption{DonaldDaisy}

\begin{document}
    \begin{letter}{Max Mustermann\\Musterstraße 1\\12345 Musterstadt}
        \opening{Hello,}
        \Blindtext
        \closing{Mit freundlichen Grüßen}
    \end{letter}
\end{document}

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