Excluding paths with wildcard not working with add -p

From: Robert Dailey <rcdailey.lists@gmail.com>
Date: May 29, 2022, 17:27 UTC
Message-ID: <CAHd499D81VN=aGsM6kaNLF2ZMg-Zg10U=qU-j7gQ7uXnqqfdqg@mail.gmail.com>

If I run the command:

    git add -p -- ':^*.cs'

I get an error:

fatal: empty string is not a valid pathspec. please use . instead if you meant to match all paths Cannot close git diff-index --cached --numstat --summary HEAD -- :(exclude,prefix:0)*.cs () at C:/Program Files/Git/mingw64/libexec/git-core\git-add--interactive line 242.

However, it works if I remove `-p`. Also observed this works too:

    git add -p -- ':*.cs'

So it looks like we have a corner case where I can't do a patch add while excluding files. Is this intentional?