Self-documenting help target

makefile

.PHONY: help
help:
	@grep -E '^[a-zA-Z0-9_.-]+:.*?## ' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "%-24s %s\n", $$1, $$2}'

Explanation

Popular pattern for `make help`.

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