How to configure Visual Studio to use Beyond Compare has a great answer for how to configure Visual Studio to use Beyond Compare. However, the UI for these steps has changed in
At least for VS 2012 you can actually just update from the command prompt as shown on the Scooter website. http://www.scootersoftware.com/support.php?zz=kb_vcs#gitwindows
If you've installed msysgitVS using the Configure User Tools thingy in VS, your path to Git will probably be:
C:\Program Files (x86)\Git\cmd\git.exe
For Git 1.7.6 and newer, edit the global config file to set the path. At a Windows command prompt enter the following commands:
For Beyond Compare v3 use:
git config --global diff.tool bc3
git config --global difftool.bc3.path "c:/program files (x86)/beyond compare 3/bcomp.exe"
If you've got PRO license, also these:
git config --global merge.tool bc3
git config --global mergetool.bc3.path "c:/program files (x86)/beyond compare 3/bcomp.exe"
Then when doing a comparison in Visual Studio it will use BeyondCompare.
For Beyond Compare v4 use:
git config --global diff.tool bc4
git config --global difftool.bc4.cmd "\"c:/program files (x86)/beyond compare 4/bcomp.exe\" \"$LOCAL\" \"$REMOTE\""
and
git config --global merge.tool bc4
git config --global mergetool.bc4.cmd "\"c:/program files (x86)/beyond compare 4/bcomp.exe\" \"$LOCAL\" \"$REMOTE\" \"$BASE\" \"$MERGED\""
git config --global mergetool.bc4.trustExitCode true