I wanted to replace the standard TFS compare/merge tool with WinMerge, especially since the Visual Studio trial I was using expired.
It was not possible for me to configure TFS from Visual Studio as it refused to start. Fortunately a one liner allowed me to do it (in a Developer Command Prompt for VS2012)
tf diff /configure
Then:
- Click the Add... button
- For Extension, type *
- For Operation, select Compare
- For Command, browse for C:\Program Files\WinMerge\WinMergeU.exe
- For Arguments, type /x /e /ub /wl /dl %6 /dr %7 %1 %2
- Click OK to accept