Quarto HTML输出中替换图题冒号为句号的技术问询

Method 1: Use Quarto's Built-in Metadata Setting #

• Add the caption-label-separator option to your document's YAML metadata to globally adjust the separator for all figures, tables, and other captioned elements:

---
title: "Your Document Title"
format: html
caption-label-separator: "."
---

• This directly modifies how Quarto generates caption labels, replacing the default colon with a period.

Method 2: Lua Filter for Targeted Control #

If the metadata setting doesn't work (e.g., for older Quarto versions), create a Lua filter file (e.g., caption-sep.lua) with the following code to rewrite caption text:

function Figure(el)
  if el.caption and el.caption[1] then
    el.caption[1].text = el.caption[1].text:gsub("(Figure %d+):", "%1.")
  end
  return el
end

function Table(el)
  if el.caption and el.caption[1] then
    el.caption[1].text = el.caption[1].text:gsub("(Table %d+):", "%1.")
  end
  return el
end

• Reference the filter in your document's YAML to apply the change:

---
title: "Your Document Title"
format: html
filters:
  - caption-sep.lua
---

Why CSS Didn't Work #

The default "Figure X:" is part of the raw caption text generated by Quarto, not a stylistic addition via CSS. Custom CSS can only modify visual styles, not the actual text content, so it can't replace the colon with a period.

内容的提问来源于stack exchange，提问作者Eric Krantz