"keep a changelog" "management" "tools"

changes

#!/bin/sh
# Usage: changes <version> [<file>...]
# Print the changes made in <version> according to the changelog
# Defaults: <file>: CHANGELOG.md

if [ $# -eq 0 ]; then
	usage "$0"
	exit 64
fi

VERSION=$1
shift

awk -v tag="[$VERSION]" -e '/^## / { want = ($2 == tag) } want' CHANGELOG.md

release

#!/bin/sh
# Usage: release <version> [<file>...]
# Update the changelog for releasing the current state as <version>
# Defaults: <file>: CHANGELOG.md

if [ $# -eq 0 ]; then
	usage "$0"
	exit 64
fi

VERSION=$1
shift

sed -E -f - CHANGELOG.md <<SED
/^## \[Unreleased\]\$/ a \\
\\
## [$VERSION] - $(date -Idate)

s;^\[Unreleased\]: ([^[:blank:]]+)/v([^/[:blank:]]+)...HEAD\$;\
[Unreleased]: \1/v$VERSION...HEAD\\
[$VERSION]: \1/v\2...v$VERSION;
SED