The trick in How can I prevent indent on paragraphs with run-in headings? - #2 by ensko breaks the other trick to suppress space between adjacent headings, so I am sticking with negative indentation. New code, which also adds negative space to address my complaint of the unwanted space after the heading’s supplement:
#set par(justify: true, first-line-indent: (amount: 1em, all: false), spacing: 0.6em)
#let body-size = 11pt
#set text(font: "New Computer Modern", size: body-size)
#set heading(numbering: "1.1." + sym.space.quad)
#show heading.where(level: 1): smallcaps
#show heading.where(level: 1): set align(center)
#show heading.where(level: 1): set text(size: 13pt, weight: "regular")
#let space-above-inline-heads = 1em
#show heading.where(level: 2): set text(size: body-size)
#show heading.where(level: 2): it => {
v(space-above-inline-heads)
h(-par.first-line-indent.amount)
counter(heading).display()
it.body
if it.body.text.last() not in (".", "?", "!") { "." }
"---"
h(-0.2em)
}
#show heading.where(level: 3): set text(size: body-size, weight: "regular")
#show heading.where(level: 3): it => {
v(space-above-inline-heads)
h(-par.first-line-indent.amount)
// The alternative to negative h() is the trick from https://forum.typst.app/t/how-can-i-prevent-indent-on-paragraphs-with-run-in-headings/3214/2 which breaks the other trick to reduce space between consecutive headings.
emph({
counter(heading).display()
it.body
if it.body.text.last() not in (".", "?", "!") { "." }
"---"
h(-0.2em)
})
}
// Clever trick to reduce spacing between consecutive headings
// See https://github.com/typst/typst/issues/2953#issuecomment-3187505828
#show heading: it => {
let previous-headings = query(selector(heading).before(here(), inclusive: false))
if previous-headings.len() > 0 {
let ploc = previous-headings.last().location().position()
let iloc = it.location().position()
if (iloc.page == ploc.page and iloc.x == ploc.x and iloc.y - ploc.y < 30pt) { // Threshold
v(-10pt) // Amount to reduce spacing, could make this dependent on it.level
}
}
it
}
= Introduction
#lorem(25)
#lorem(15)
== Motivation
#lorem(20)
=== Subsubsection
#lorem(15)
== Etc.
=== Subsubsection
#lorem(10)
This has a strange result: different spacing after the level-3 heading’s supplement in the two instances of the H3. Screenshot with box highlighting to prove that there is misalignment:
I do not understand why “1.1.1. Subsubsection.—” and “1.2.1. Subsubsection.—” would not have the same spacing after each since their supplements are generated by the same show rule.