commit https://github.com/vim/vim/commit/71bcfdf30109c3d6e40d143adcaf33964b18a70b Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 9 18:20:46 2016 +0100 patch 7.4.1068 Problem: Wrong way to check for unletting internal variables. Solution: Use a better way. (Olaf Dabrunz)

# 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