Simpler version about polyglot HOT 1 OPEN

Thanks! I'll definitely try to think of improvements along that line.

The main complication is polyglot's main strength: it works pretty much the same in all shells (except csh/tcsh and some really old shells without dynamic prompts). Getting it to do that was actually quite hard, as I couldn't just use POSIX code; very obscure peculiarities of each shell had to be taken into account. Any little change can make the prompt unusable on one or more shells.

That said, I relish the challenge, and thank you for helping to make the prompt better. If you have any specific suggestions that would help you the most, let me know and I'll see if I can work them in by and by.

from polyglot.