cmd/tests: Add FOR tests for various quoted parameters.

programs/cmd/tests/test_builtins.cmd

@@ -434,6 +434,10 @@ for %%i in (@tab@ foo@tab@) do echo %%i
 for@tab@ %%i in@tab@(@tab@M) do echo %%i
 for %%i@tab@in (X)@tab@do@tab@echo %%i
 for@tab@ %%j in@tab@(@tab@M, N, O@tab@) do echo %%j
+for %%i in (`echo A B`) do echo %%i
+for %%i in ('echo A B') do echo %%i
+for %%i in ("echo A B") do echo %%i
+for %%i in ("A B" C) do echo %%i
 goto :endForTestFun1
 :forTestFun1
 echo %1

programs/cmd/tests/test_builtins.cmd.exp

@@ -322,6 +322,15 @@ X
 M
 N
 O
+`echo
+A
+B`
+'echo
+A
+B'
+@todo_wine@"echo A B"
+@todo_wine@"A B"
+C
 ...imbricated FORs
 @todo_wine@X Y
 @todo_wine@X Y