patch 8.2.2289: Vim9: 'cpo' can become empty Commit: https://github.com/vim/vim/commit/e5a2dc87fd9d63dfd0d9c379e363ee8b8c05b14c Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 3 19:52:05 2021 +0100 patch 8.2.2289: Vim9: 'cpo' can become empty Problem: Vim9: 'cpo' can become empty. Solution: Use empty_option instead of an empty string. Update quickfix buffer after restoring 'cpo'. (closes #7608)

# The most simplistic Makefile, for MinGW and Cygwin gcc on MS-DOS

ifndef USEDLL
USEDLL = no
endif

ifeq (yes, $(USEDLL))
DEFINES =
LIBS    = -lc
else
DEFINES =
LIBS    =
endif

CC = gcc
CFLAGS = -O2 -Wall -DWIN32 $(DEFINES)

ifneq (sh.exe, $(SHELL))
DEL = rm
else
DEL = del
endif

xxd.exe: xxd.c
	$(CC) $(CFLAGS) -s -o xxd.exe xxd.c $(LIBS)

clean:
	-$(DEL) xxd.exe