Add short key names

[Capt0rr]

Minor addition, this was driving me nuts.

I like that we have ret, esc, lt, gt, but then being forced to use space, backspace, pageup instead of spc, bspc, pgup, pgdn is mental torture and makes for unnecessarily more verbose scripts.

[Delapouite]

For me the "mental torture" has always been to endure weird and arbitrary abbreviations that our industry mindshare has inherited from the 70's and ended considering normal in a Stockholm syndrome-like experience.

A few random examples: pwd vs passwd, glob (global what?), int, for interrupt, or integer, ifconfig (for interface where we already if for conditionals, str for both string or struct…

My point is, there's no need to keep going this trend and favor ambiguity just to save a few characters.

[Capt0rr]

Your point is moot, not only because my PR doesn't take anything away from you (you're free to continue writing <backspace> as many times as it takes to fix the industry), but also because you're as wrong about my motivations as you are about the definitions of "weird", "arbitrary", and "ambiguity" - str for struct is the only example that I might agree is ambiguous, but it's certainly not weird or arbitrary (and I've never seen it, nor has google, so it's not something "considered normal" either).

Like it or not, kak - I mean k-a-k-o-u-n-e (sorry for the ambiguity) - already uses abbreviations for half the key names and they're not going anywhere (nor is anyone confused by them), so I'm simply making the other half consistent.

I sure hope consistency is still something we can all agree on, although it is inherited all the way back from the 60s so...

[danr]

Two comments:

1. I love shorthands, but percent surely should be pct, not perc.
2. On the other hand, I agree with @Delapouite 😬

[Capt0rr]

I love shorthands
I agree with @Delapouite 😬

one of those isn't true.