统一 diff 查看器只有两个命令行选项

示例（应在一行输入）

TortoiseUDiff.exe /patchfile:"c:\diff.patch"
      

如果从另一个命令创建 diff，可以使用 TortoiseUDiff 直接显示该 diff

svn diff | TortoiseUDiff.exe /u
      

即使省略 /p 参数，此方法也适用

svn diff | TortoiseUDiff.exe