m4_define(FOOT, ⁨
	m4_define(⁨__HASH⁩, m4_esyscmd(
		git rev-list --max-count=1 ⁨HEAD⁩ m4___file__
	))
	m4_define(⁨__DATE⁩, m4_esyscmd(
		git log --max-count=1 --pretty='format:%cI' m4___file__ \
		| xargs --no-run-if-empty -- date '+%-d %B %Y (%A) — %T %Z' --date \
		| ifne -n echo 'No commit yet…'
	))
	m4_include(foot.gsp)
⁩)