☰

l3keys：同义词键不起作用

tag-icon • tag-icon expl3 l3keys
l3keys：同义词键不起作用

在我的某个命令的键值接口中，有一个 key name style，我为它定义了一个备用名称，如下所示：

, name-style    .meta:n             = { name~style = #1 }
, name-style    .value_required:n   = true

但是，从以下示例中可以看出， 的name-style行为与 不同name style。这是什么原因造成的？我该如何修复它？

\documentclass{article}

\usepackage{hyperref}

\RequirePackage { amsmath, amsthm }

\usepackage{xcolor}
\usepackage[name-in-link]{create-theorem}

\CreateTheorem { theorem } { number-within = subsection, create-numberless-version  }

\SetTheorem { theorem }
  {
    name-style = { % "name style" works
      , heading style = \color{blue}\textsc
      , crefname style = \color{blue}\textsc
      , Crefname style = \color{blue}\textsc
      , numbering style = \color{red}\textbf
    }
  }

\begin{document}

Current language: \languagename


\begin{theorem}\label{thm1}
  In english.
\end{theorem}
\begin{theorem}\label{thm2}
  In english.
\end{theorem}

\begin{theorem*}
  An unnumbered theorem.
\end{theorem*}

\Cref{thm1,thm2}


\end{document}

期望结果如下：

在此处输入图片描述

以下是完整的按键设置，供您参考：

\keys_define:nn { create-theorem-setting }
  {
    , name                        .code:n             = { \exp_args:Ne \NameTheorem { \l__crthm_current_env_tl } { #1 } }
    , name                        .value_required:n   = true
    , name~style                  .code:n             = { \exp_args:Ne \NameTheorem { \l__crthm_current_env_tl } { #1 } }
    , name~style                  .value_required:n   = true
    , name-style                  .meta:n             = { name~style = #1 }
    , name-style                  .value_required:n   = true
    , name style                  .meta:n             = { name~style = #1 }
    , name style                  .value_required:n   = true
    , parent~counter              .code:n             = { \crthm_counter_within:en { \l__crthm_current_env_tl } { #1 } }
    , parent~counter              .value_required:n   = true
    , parent-counter              .meta:n             = { parent~counter = #1 }
    , parent-counter              .value_required:n   = true
    , parent counter              .meta:n             = { parent~counter = #1 }
    , parent counter              .value_required:n   = true
    , number~within               .meta:n             = { parent~counter = #1 }
    , number~within               .value_required:n   = true
    , number-within               .meta:n             = { parent~counter = #1 }
    , number-within               .value_required:n   = true
    , number within               .meta:n             = { parent~counter = #1 }
    , number within               .value_required:n   = true
    , shared~counter              .code:n             = { \crthm_counter_alias:en { \l__crthm_current_env_tl } { #1 } }
    , shared~counter              .value_required:n   = true
    , shared-counter              .meta:n             = { shared~counter = #1 }
    , shared-counter              .value_required:n   = true
    , shared counter              .meta:n             = { shared~counter = #1 }
    , shared counter              .value_required:n   = true
    , number~like                 .meta:n             = { shared~counter = #1 }
    , number~like                 .value_required:n   = true
    , number-like                 .meta:n             = { shared~counter = #1 }
    , number-like                 .value_required:n   = true
    , number like                 .meta:n             = { shared~counter = #1 }
    , number like                 .value_required:n   = true
    , unknown                     .code:n             = {}
  }

答案1

记录的行为l3key与其他 keyval 包类似：从一个值中删除一组外部括号如果存在。 像这样

foo = {bar} ,

和

foo = bar ,

是等效的（因为l3keys忽略了前导和尾随空格）。这意味着使用如下键设置

name-style = { % "name style" works
  , heading style = \color{blue}\textsc
  , crefname style = \color{blue}\textsc
  , Crefname style = \color{blue}\textsc
  , numbering style = \color{red}\textbf
    }

将删除外部括号并传递

, heading style = \color{blue}\textsc
, crefname style = \color{blue}\textsc
, Crefname style = \color{blue}\textsc
, numbering style = \color{red}\textbf

至。#1然后name-style将其插入到

name~style = #1

导致

name~style = 
, heading style = \color{blue}\textsc
, crefname style = \color{blue}\textsc
, Crefname style = \color{blue}\textsc
, numbering style = \color{red}\textbf

换句话说，name style接收一个空值，然后你直接设置其他键。

一般结论是，当将键值从一个键传递到另一个键时，您应该总是使用一组括号来屏蔽,或=标记

name-style .meta:n = { name~style = {#1} }

相关内容