This likely breaks hostname setting when accessing via SSH, but:
* it's first version that is at least somehow readable,
* and also WE *MAY* have fixed the long-standing PITA escaping
errors that we used to get in urxvt if BASH_COMMAND had backslashes
in it!
* Remove excess comments and optional syntax (eg. EOL `;`),
* use non-conflict function names,
* simplify PS1 generation,
* close PROMPT_COMMAND setup into function,
The backslash was needed due to [bug on Jessie][2], but on all other
macnines I use this is printed, which is not desired.
[1]: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=767655
Taken from an [i3 forum answer][1] and edited to remove unnecessary info
(name@hostname and $HOME path)
[1]: https://faq.i3wm.org/question/2481/how-to-show-cli-application-name-in-window-title/?answer=2482#post-id-2482