Makefile

GHPAGES_EXTRA := loading.html subresource-loading.html

LIBDIR := lib
include $(LIBDIR)/main.mk

$(LIBDIR)/main.mk:
ifneq (,$(shell grep "path *= *$(LIBDIR)" .gitmodules 2>/dev/null))
	git submodule sync
	git submodule update $(CLONE_ARGS) --init
else
	git clone -q --depth 10 $(CLONE_ARGS) \
	    -b main https://github.com/martinthomson/i-d-template $(LIBDIR)
endif

subresource-loading.html: subresource-loading.bs
	@ (HTTP_STATUS=$$(curl https://api.csswg.org/bikeshed/ \
	                       --output $@ \
	                       --write-out "%{http_code}" \
	                       --header "Accept: text/plain, text/html" \
	                       -F die-on=warning \
	                       -F file=@$<) && \
	[[ "$$HTTP_STATUS" -eq "200" ]]) || ( \
		echo ""; cat $@; echo ""; \
		rm -f $@; \
		exit 22 \
	);