Because this information is apparently not available anywhere on the internet I’m going to write it here:
git config —global alias.p4 !‘“C:\Program Files (x86)\Git\bin\git-p4.py”’
Please note that it’s single quote, then double quote, and closes double quote, single quote
Or inside your .gitconfig this is what it should look like:
p4 = !’C:\Program Files (x86)\Git\bin\git-p4.py’
This is with git 1.7.10.msysgit.1, on Windows 7 x64. YMMV on other configurations.