Git 2.3 and newer
(Note: Use bc3 on the command line for BC version 4. Caused by git legacy support from Linux.)
Launch Beyond Compare, go to the Beyond Compare menu and run Install Command Line Tools.
Diff
git config --global diff.tool bc3
To launch a diff using Beyond Compare, use the command: git difftool file.ext
Merge
git config --global merge.tool bc3
git config --global mergetool.bc3.trustExitCode true
To launch a 3-way merge using Beyond Compare, use the command:
git mergetool file.ext
