git config --global merge.tool bc
git config --global mergetool.bc.path "C:/Program Files/Beyond Compare 5/BCompare.exe"
git config --global mergetool.bc.trustExitCode true
git config --global --list | Select-String -Pattern "merge"
merge.tool=bc
mergetool.bc.path=C:/Program Files/Beyond Compare 5/BCompare.exe
mergetool.bc.trustexitcode=true
git mergetool 或者git mergetool --tool=bc