Can't persist a single file with no file extension

[nickbudi]

I'm trying to make an app manifest for streamlink-portable

streamlink-portable.json:

{
    "homepage": "https://streamlink.github.io/",
    "version": "0.14.0",
    "license": "BSD-2-Clause",
    "url": "https://github.com/streamlink/streamlink-portable/releases/download/Stable_v0.14.0/Streamlink_for_Windows_Portable_v0.14.0.zip",
    "hash": "40dd1664ac3682cbe622b56a524b6d83677737e3df4bd020a2110570c5c2e3ae",
    "persist": "streamlinkrc",
    "bin": "Streamlink.exe",
    "checkver": {
        "url": "https://github.com/streamlink/streamlink-portable/releases",
        "re": "/releases/tag/(?:Stable_v)?([\\d.]+)"
    },
    "autoupdate": {
        "url": "https://github.com/streamlink/streamlink-portable/releases/download/Stable_v$version/Streamlink_for_Windows_Portable_v$version.zip"
    }
}

scoop install streamlink-portable.json:

Installing 'streamlink-portable' (0.14.0) [64bit]
Loading Streamlink_for_Windows_Portable_v0.14.0.zip from cache
Checking hash of Streamlink_for_Windows_Portable_v0.14.0.zip... ok.
Extracting... done.
Linking C:\Scoop\apps\streamlink-portable\current => C:\Scoop\apps\streamlink-portable\0.14.0
Creating shim for 'Streamlink'.
Persisting streamlinkrc
Cannot create a file when that file already exists.
'streamlink-portable' (0.14.0) was installed successfully!

So streamlinkrc isn't symlinked and a directory named streamlinkrc is created in $persist_dir. Does powershell assume streamlinkrc is a directory since there isn't a file extension?

Also since streamlinkrc exists after extraction, the config would get reset each update anyways right?

Related to #1372

[rasa]

Perhaps if persist has a filespec that doesn't exist, we create an empty directory, if the filespec has a trailing slash, and a file otherwise. @r15ch13?