如何保留自定义编号同时移除附录引用中的冒号？

问题背景 #

我当前使用的Typst代码如下：

#outline()

This is the body of my text. There is something cool I show in @first, but you
will have to read it to find out.

#heading("Appendices", numbering: none)

#set heading(
  offset: 1,
  numbering: (_, ..rest) => "Appendix " + numbering("A:", ..rest),
  supplement: []
)

= First <first>
Text of the first appendix.

= Second <second>
Text of the second appendix.

这段配置能实现：用一级标题语法编写附录，但显示时为二级标题效果（目录中缩进，隶属于一级标题“Appendices”）。但存在问题：正文中引用附录时，编号后会带冒号，和常规numbering: "A:"的表现不符。需要在保留所有现有功能的前提下解决该问题。

解决方案 #

核心思路是将标题显示的冒号与引用的编号分离，通过supplement参数控制标题的冒号显示，让numbering只生成不带冒号的引用编号。修改后的代码如下：

#outline()

This is the body of my text. There is something cool I show in @first, but you
will have to read it to find out.

#heading("Appendices", numbering: none)

#set heading(
  offset: 1,
  numbering: (_, ..rest) => "Appendix " + numbering("A", ..rest),
  supplement: ":"
)

= First <first>
Text of the first appendix.

= Second <second>
Text of the second appendix.

逻辑说明 #

• 保留offset:1和#heading("Appendices", numbering: none)的设置，确保附录在目录中仍以二级标题形式缩进，归属于“Appendices”下；
• 调整numbering函数，只生成不带冒号的“Appendix A”格式编号，这样正文中引用附录时（如@first）会显示不带冒号的正确格式；
• 通过supplement: ":"在标题的编号后添加冒号，保持原有标题“Appendix A: First”的显示效果。

内容的提问来源于stack exchange，提问作者DJDuque