YoutubeDL filenaming inconsistent

[lhjlu]

I encountered an issue with ytdl and filenames when downloading files that start with a hyphen.
For example: -qFw9qljQf4
If a link begins with a hyphen or -
The ytdl throws an error as starting the command with a hyphen leads to incorrect reading of the link.
polymath.py: error: argument -a/--add: expected one argument
To avoid this a workaround is to replace the hyphen with %2d, thus running instead:
polymath.py -a %2dqFw9qljQf4
The file gets downloaded, but than saved to a filename that does not get renamed correctly making the accessed file non-existent:
FileNotFoundError: [Errno 2] No such file or directory: 'C:\\~\\polymath\\library\\-qFw9qljQf4.wav'
Doing the exact same command again after renaming the file with %2d prefix with a - resolves the issue as a work-around.