按下面的操作 依次执行。目前是可以双开的
1.cp -R /Applications/WeChat.app /Applications/WeChat2.app
2./usr/libexec/PlistBuddy -c "Set :CFBundleIdentifier com.tencent.xinWeChat2" /Applications/WeChat2.app
3./usr/libexec/PlistBuddy -c "Set :CFBundleName WeChat2" /Applications/WeChat2.app/Contents/Info.plist
4.codesign --force --deep --sign - /Applications/WeChat2.app
5.open /Applications/WeChat2.app