Seperate content and display

[edwardabraham]

I am using pubmatter to help with making a template for organisational reports. At the moment pubmatter mixes together content and display, for example looking at the show-title function below

• it relies on a globally defined theme
• It puts the title and subtitle within boxes that have insets and fill defined

#let show-title(fm) = {
  with-theme(theme => {
    set text(font: theme.font)
    let title = if (type(fm) == dictionary and "title" in fm) {fm.title} else if (type(fm) == str or type(fm) == content) { fm } else { none }
    let subtitle = if (type(fm) == dictionary and "subtitle" in fm) {fm.subtitle} else { none }
    if (title != none) {
      box(inset: (bottom: 2pt), width: 100%, text(17pt, weight: "bold", fill: theme.color, title))
    }
    if (subtitle != none) {
      parbreak()
      box(width: 100%, text(12pt, fill: gray.darken(30%), subtitle))
    }
  })
}

I would like to have content and display separated so that pubmatter returned blocks that would inherit styles from the rest of the document. For example, if show-title was defined as below, then it would be possible to style the title and subtitle from elsewhere in the template, through a show command show label("pm-subtitle"): set text(blue)

#let show-title(fm) = {
  let title = if (type(fm) == dictionary and "title" in fm) { fm.title } else if (
    type(fm) == str or type(fm) == content
  ) { fm } else { none }
  let subtitle = if (type(fm) == dictionary and "subtitle" in fm) { fm.subtitle } else { none }
  if (title != none) {
    text([#title <pm-title>])
  }
  if (subtitle != none) {
    parbreak()
    text([#subtitle <pm-subtitle>])
  }
}