1：修改 ~/.subversion/conf文件将其中的

[helpers] section 中的关于diff-cmd的注释行修改为：

diff-cmd=/usr/bin/vimdiff_for_svn

2：在/usr/bin/目录下增加一个脚本为

#!/usr/bin/python
import sys, os
diffprogram = '/usr/bin/vimdiff'
fn_old = sys.argv[6]
fn_working_copy = sys.argv[7]
# arrange the args in the order diffprogram expects them
args = ['mydiff', '-d', fn_old, fn_working_copy]
os.execv(diffprogram, args)