Download playlists in reverse order (Negative boundaries for --playlist-start & --playlist-end)

[5moufl]

Let's say I want the n last videos from a playlist, it'd be nice to be able to use negative numbers like in python to do that.
For example if I want the last 100 videos from a playlist I could do

youtube-dl playlistURL --playlist-start -100

or

youtube-dl playlistURL --playlist-start -200 --playlist-101

if I want the previous 100 videos.

[FiloSottile]

I wonder how this would be handled by the poor command line parser... Another intuitive way to implement this feature (that I really like)?

[Tailszefox]

Poor command line parser? Would it have trouble parsing the negative numbers because of the minus sign before it?

If it doesn't work there could always be another option added, like --playlist-reverse, which would then negate the meaning of --playlist-start and --playlist-end so that it acts the way described even with positive numbers. Depends which option seems the most intuitive...

[vitorgalvao]

#6845 is a duplicate of this. In that issue the suggestion is that --playlist-reverse (maybe it did not exist when this issue was opened) should also affect --playlist-start and --playlist-end. That seems the most logical solution.

[yan12125]

Thanks. I'll close this as there are more discussions in #6845