I can call git-credential-manager-core.exe alone to communicate with github.com on Windows？

[xiaofuhub]

Feature description

A clear and concise description of the new feature.

[mjcheetham]

I would first ask why are you wanting to call GCM directly? Interacting with GCM like Git does is not easy.

You can call git-credential-manager-core.exe directly (as opposed to via Git itself with git credential), but you must follow the conventions set by Git when it calls GCM.

That is to say (1) call the get command and pass the following over standard input:

protocol=<protocol><LF>
host=<host><LF>
path=<path><LF>
username=<username><LF>
<LF>

..where the following placeholders are (for a remote URL of https://mona@github.com/desktop/desktop):

• <protocol> is the scheme part of the remote URL (the bit before ://), for example https
• <host> is the hostname (and optional port) from the remote URL, for example github.com
• <path> is the absolute path part from the remote URL, for example desktop/desktop
  • Note that the entire path= line should only be included if the credential.useHttpPath option has been set
• <username> is the optional username part of the remote URL, for example mona

and then use the credentials that GCM returns.

Next (important) if the credentials are OK, you must (2a) follow up with a call to store, passing the same information you got back from the get request in (1).

If the credential you get back from (1) is NOT ok, then (2b) call erase and pass the same information you got back from the get request in (1).