[Question] Where is the alias "git cache" defined?

[jmarrec]

I'm not familiar with Rust, and definitely not familiar with any of the crates you used, so after trying to look at the code I still don't understand where is the "git cache" (as opposed to git-cache) alias is stored. My ~/.gitconfig has no trace of it.

$ which git-cache 
~/.cargo/bin/git-cache

I'm genuinely curious to understand how this works, thanks!

[jmarrec]

Oh well, I actually found it https://stackoverflow.com/a/10978296/2543372, sorry for the question!

As you can see in the source code in execv_dashed_external, If you make the command git-my-custom-made-extension, then git will alias:

git my-custom-made-extension ... → git-my-custom-made-extension ...
git help my-custom-made-extension → man git-my-custom-made-extension

There's nothing special about "extending git". Just build a program as you would normally, and make sure the name starts with git-

TIL!