Code highlighting

hadley highlights a code block that names its language with Shiki, in the theme or themes config.lima names. Without them, a code block that names its language stops the build.

highlighting:
  theme: nord

or, for pages that are light and dark:

highlighting:
  light: github-light
  dark: github-dark-dimmed

Each is one of Shiki’s themes, or one the site’s theme brings: theme/highlighting/<name>.json, a Shiki theme (TextMate JSON) named as its file is, of the type light or dark. hems brings hems-light and hems-dark. hadley writes the colors to /assets/css/syntax-highlighting.css, also for a site without code, so that a theme can link it; hasCode tells a template whether the page has a code block that names its language, and hems and punch link the file only then. With a light and a dark theme, a color is light-dark(<light>, <dark>): it follows the color-scheme of the page, which the site’s theme sets (hems does). A font style, weight or underline that the two themes set differently follows the reader’s system instead (prefers-color-scheme).