说明：  vim64增加.c,.ec文件自动备份功能，将fileio.c和main.c复制到vim64/src目录下编译 vim -B格式使用vim编辑.c,.ec文件时可以自动备份编辑文件,备份文件名：.$[filename].c.bak
(vim64 increase. c,. ec document automatic backup functions, will be copied to fileio.c and main.c compiled vim64/src directory vim-B format to use vim editor. c,. ec file editor can automatically back up files, backup files Name:. $ [filename]. c.bak)