text-crossrefs: automatically regenerate tests via Make

text-crossrefs/Makefile

@@ -32,3 +32,11 @@ test-%: text-crossrefs.lua sample.md
 	fi ;\
 	rm test/tmp-$*$(suffix).native ;\
 	)
+
+update-test-files:
+	for f in typst opendocument latex context ; do \
+	  for v in '' -with-options ; do \
+	    TESTED_FORMAT=$$f pandoc -L text-crossrefs.lua -t native \
+	    -o test/sample-$$f$$v.native sample$$v.md ; \
+	  done ; \
+	done