I broke up with neovim....vim is my best friend now

dot_vim/plugged/vimtex/test/test-indentation/Makefile

@@ -0,0 +1,22 @@
+MYVIM ?= nvim --clean --headless
+
+INMAKE := 1
+export INMAKE
+
+TESTS := $(wildcard test_*_reference.tex)
+TESTS := $(TESTS:_reference.tex=)
+
+.PHONY: test $(TESTS)
+
+test: $(TESTS)
+
+$(TESTS):
+	@rm -f $@_output.tex
+	@FILEIN=$@_input.tex FILEOUT=$@_output.tex $(MYVIM) -u test.vim
+	@diff $@_output.tex $@_reference.tex
+	@rm -f $@_output.tex
+
+test_ampersands-off: export FLAGS=1
+test_environments-ignored: export FLAGS=2
+test_close-indented: export FLAGS=3
+test_close_open_same_line: export FLAGS=4