--- a/src/testdir/Make_dos.mak
+++ b/src/testdir/Make_dos.mak
@@ -1,152 +1,4 @@
-#
-# Makefile to run all tests for Vim, on Dos-like machines.
-#
-# Requires a set of Unix tools: echo, diff, etc.
-
-VIMPROG = ..\\vim
-
-default: nongui
-
-!include Make_all.mak
-
-# Explicit dependencies.
-test_options.res test_alot.res: opt_test.vim
-
-TEST_OUTFILES = $(SCRIPTS_TINY_OUT)
-DOSTMP = dostmp
-DOSTMP_OUTFILES = $(TEST_OUTFILES:test=dostmp\test)
-DOSTMP_INFILES = $(DOSTMP_OUTFILES:.out=.in)
-
-.SUFFIXES: .in .out .res .vim
-
-# Add --gui-dialog-file to avoid getting stuck in a dialog.
-COMMON_ARGS = $(NO_INITS) --gui-dialog-file guidialog
-
-nongui:	nolog tinytests newtests report
-
-gui:	nolog tinytests newtests report
-
-tiny:	nolog tinytests report
-
-benchmark: $(SCRIPTS_BENCH)
-
-report:
-	@rem without the +eval feature test_result.log is a copy of test.log
-	@if exist test.log ( copy /y test.log test_result.log > nul ) \
-		else ( echo No failures reported > test_result.log )
-	$(VIMPROG) -u NONE $(COMMON_ARGS) -S summarize.vim messages
-	@echo.
-	@echo Test results:
-	@cmd /c type test_result.log
-	@if exist test.log ( echo TEST FAILURE & exit /b 1 ) \
-		else ( echo ALL DONE )
-
-
-# Execute an individual new style test, e.g.:
-# 	nmake -f Make_dos.mak test_largefile
-$(NEW_TESTS):
-	-if exist $@.res del $@.res
-	-if exist test.log del test.log
-	-if exist messages del messages
-	@$(MAKE) -nologo -f Make_dos.mak $@.res VIMPROG=$(VIMPROG)
-	@type messages
-	@if exist test.log exit 1
-
+!message Make_dos.mak is deprecated. Use Make_mvc.mak instead.
+!message
 
-# Delete files that may interfere with running tests.  This includes some files
-# that may result from working on the tests, not only from running them.
-clean:
-	-if exist *.out del *.out
-	-if exist *.failed del *.failed
-	-if exist *.res del *.res
-	-if exist $(DOSTMP) rd /s /q $(DOSTMP)
-	-if exist test.in del test.in
-	-if exist test.ok del test.ok
-	-if exist Xdir1 rd /s /q Xdir1
-	-if exist Xfind rd /s /q Xfind
-	-if exist XfakeHOME rd /s /q XfakeHOME
-	-if exist X* del X*
-	-for /d %i in (X*) do @rd /s/q %i
-	-if exist viminfo del viminfo
-	-if exist test.log del test.log
-	-if exist test_result.log del test_result.log
-	-if exist messages del messages
-	-if exist benchmark.out del benchmark.out
-	-if exist opt_test.vim del opt_test.vim
-	-if exist guidialog del guidialog
-	-if exist guidialogfile del guidialogfile
-
-nolog:
-	-if exist test.log del test.log
-	-if exist test_result.log del test_result.log
-	-if exist messages del messages
-
-
-# Tiny tests.  Works even without the +eval feature.
-tinytests: $(SCRIPTS_TINY_OUT)
-
-# Copy the input files to dostmp, changing the fileformat to dos.
-$(DOSTMP_INFILES): $(*B).in
-	if not exist $(DOSTMP)\NUL md $(DOSTMP)
-	if exist $@ del $@
-	$(VIMPROG) -u dos.vim $(COMMON_ARGS) "+set ff=dos|f $@|wq" $(*B).in
-
-# For each input file dostmp/test99.in run the tests.
-# This moves test99.in to test99.in.bak temporarily.
-$(TEST_OUTFILES): $(DOSTMP)\$(*B).in
-	-@if exist test.out DEL test.out
-	-@if exist $(DOSTMP)\$(*B).out DEL $(DOSTMP)\$(*B).out
-	move $(*B).in $(*B).in.bak > nul
-	copy $(DOSTMP)\$(*B).in $(*B).in > nul
-	copy $(*B).ok test.ok > nul
-	$(VIMPROG) -u dos.vim $(COMMON_ARGS) -s dotest.in $(*B).in
-	-@if exist test.out MOVE /y test.out $(DOSTMP)\$(*B).out > nul
-	-@if exist $(*B).in.bak move /y $(*B).in.bak $(*B).in > nul
-	-@if exist test.ok del test.ok
-	-@if exist Xdir1 rd /s /q Xdir1
-	-@if exist Xfind rd /s /q Xfind
-	-@if exist XfakeHOME rd /s /q XfakeHOME
-	-@del X*
-	-@if exist viminfo del viminfo
-	$(VIMPROG) -u dos.vim $(COMMON_ARGS) "+set ff=unix|f test.out|wq" \
-		$(DOSTMP)\$(*B).out
-	@diff test.out $*.ok & if errorlevel 1 \
-		( move /y test.out $*.failed > nul \
-		 & del $(DOSTMP)\$(*B).out \
-		 & echo $* FAILED >> test.log ) \
-		else ( move /y test.out $*.out > nul )
-
-
-# New style of tests uses Vim script with assert calls.  These are easier
-# to write and a lot easier to read and debug.
-# Limitation: Only works with the +eval feature.
-
-newtests: newtestssilent
-	@if exist messages type messages
-
-newtestssilent: $(NEW_TESTS_RES)
-
-.vim.res:
-	@echo $(VIMPROG) > vimcmd
-	$(VIMPROG) -u NONE $(COMMON_ARGS) -S runtest.vim $*.vim
-	@del vimcmd
-
-test_gui.res: test_gui.vim
-	@echo $(VIMPROG) > vimcmd
-	$(VIMPROG) -u NONE $(COMMON_ARGS) -S runtest.vim $*.vim
-	@del vimcmd
-
-test_gui_init.res: test_gui_init.vim
-	@echo $(VIMPROG) > vimcmd
-	$(VIMPROG) -u gui_preinit.vim -U gui_init.vim $(NO_PLUGINS) -S runtest.vim $*.vim
-	@del vimcmd
-
-opt_test.vim: ../optiondefs.h gen_opt_test.vim
-	$(VIMPROG) -u NONE -S gen_opt_test.vim --noplugin --not-a-term ../optiondefs.h
-
-test_bench_regexp.res: test_bench_regexp.vim
-	-if exist benchmark.out del benchmark.out
-	@echo $(VIMPROG) > vimcmd
-	$(VIMPROG) -u NONE $(COMMON_ARGS) -S runtest.vim $*.vim
-	@del vimcmd
-	@IF EXIST benchmark.out ( type benchmark.out )
+!include Make_mvc.mak