Rework Completion System

[MoonPadUSer]

Demonstration:
Invidious
Youtube

It shows 5 completions at once, allows switching between completions using UP and DOWN, you can complete the selected completion like usual with TAB

[robalni]

I tested this and here are a few problems that I found.

Can't reach more than 5 suggestions.

Example: I don't remember the command name "smgfragweap1" so I type "/smgfrag". With the old completion I could tab until I reached the command I wanted. With this one I can't reach it at all because I can only choose from the 5 visible suggestions.

Arguments are deleted.

Example: I type "/dm dark" and then press tab because I want to play on Darkness. With the old completion this works. With this one the "dark" is deleted and I only see "/dm ".

Previous completions stay in memory and used next time.

Example: I type "/smgfragweap1" and press tab and then escape. Now I open the chat again and type anything at all and then press tab again. Now everything I typed is deleted and replaced with "/smgfragweap1 ".

[MoonPadUSer]

@robalni You are completely right, I have noticed those problems too, but sadly I haven't found the time to fix them yet :(
But to "solve" the only 5 suggestions problem I'd like to improve the completion itself because currently the order depends on the idents hashnameset. Thank you :)