commit https://github.com/vim/vim/commit/24db72958fc91bd067c7d60a4990d09a6f295b48 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 3 16:56:10 2016 +0100 patch 7.4.1040 Problem: The tee command is not available on MS-Windows. Solution: Adjust tee.c for MSVC and add a makefile. (Yasuhiro Matsumoto)

new file mode 100644
--- /dev/null
+++ b/src/tee/Make_mvc.mak
@@ -0,0 +1,14 @@
+# A very (if not the most) simplistic Makefile for MSVC
+
+CC=cl
+CFLAGS=/O2
+
+tee.exe: tee.obj
+	$(CC) $(CFLAGS) /Fo$@ $**
+
+tee.obj: tee.c
+	$(CC) $(CFLAGS) /c $**
+
+clean:
+	- del tee.obj
+	- del tee.exe