How to use different CJK font weight in different elements but not affect the latin characters?

Questions
1

Hi all,

I’m trying to use different weight for CJK characters in different elements. For example, use “bold”-weight of font Source Han Serif in heading, but “regular”-weight of Source Han Sans in strong. But latin characters are shown with “bold” weight in both cases.

I found it impossible to achieve by setting show regex("\\p{Han}" suggested in this post as the regex show rules will apply globally. If I set such a rule in one element, it would affect all after that element.

Are there any solutions?

2

Regex show rules don’t need to apply globally, you can apply them to specific elements or scopes.

#let b-to-p(body) = {
  show regex("[Bb]"): it => (B: "P", b: "p").at(it.text)
  body
}
// now we can apply the rule where we want to
#b-to-p[
  Banana and biscuits.
  #table[Abc.]
]
#show heading: b-to-p
= Banana
But this text is safe from modification of b's.
1 Like
4

It depends on whether the font of the heading or strong is the same as the main text. Bluss gives the latter case, and here’s the former case.

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#set page(width: auto, height: auto, margin: 1em)

#set text(
  lang: "zh",
  font: (
    (name: "Libertinus Serif", covers: "latin-in-cjk"),
    "Noto Serif CJK SC",
  ),
  top-edge: "ascender",
  bottom-edge: "descender",
)

#show strong: set text(font: (
  (name: "Libertinus Serif", covers: "latin-in-cjk"),
  "Noto Sans CJK SC",
))
#show strong: it => {
  show regex("\p{Han}"): set text(weight: 100)
  it
}


= Heading 标题

text正文*强调 strong*

#set strong(delta: 0)
*strong 强调*

Besides, I recommend replace show-func with show-set whenever possible, especially for template authors.
The reason is that show-func rules are hard to override. See Which show rule takes precedence? for explanation.

Maybe you could install SourceHanSans-Regular alone (without other weights)…

1 Like
5

Thanks for your reply. However, the perform I observed is not as stated as that in documents. Perhaps it is caused by logic error in my code.

6

Many thanks! You remind me that I set weights globally unexpectedly in a no-selector show and it is hard to override!! I finally figured it out.

1 Like