Bash prompt displaying last command exit code, user, host, ssh and screen info, path and git info.

.bash_ps1

#!/bin/bash

# Load Git for Windows prompt.
if [ -f "/c/Program Files/Git/mingw64/share/git/completion/git-prompt.sh" ]; then
	source "/c/Program Files/Git/mingw64/share/git/completion/git-prompt.sh"
fi

# colors
white='\[\033[1;37m\]'
gray='\[\033[1;30m\]'
lightgray='\[\033[0;37m\]'
black='\[\033[0;30m\]'
red='\[\033[0;31m\]'
lightred='\[\033[1;31m\]'
green='\[\033[0;32m\]'
lightgreen='\[\033[1;32m\]'
brown='\[\033[0;33m\]'
yellow='\[\033[1;33m\]'
blue='\[\033[0;34m\]'
lightblue='\[\033[1;34m\]'
purple='\[\033[0;35m\]'
pink='\[\033[1;35m\]'
cyan='\[\033[0;36m\]'
lightcyan='\[\033[1;36m\]'
reset='\[\033[0m\]'

bracket_color="${lightgray}"

# ROOT
root_flag="0"
root_color="${green}"
if [[ ( "${MSYSTEM}" != "" && "$(id -G | grep -E '(114|544)')" != "" ) || "${LOGNAME}" == "root" ]]; then
	root_flag="1"
	root_color="${red}"
fi

function __prompt() {
	local exit="$?"
	##
	# Line 1
	## 

	PS1="\n"

	# Prompt arrow
	PS1="${PS1}${root_color}\342\224\214\342\224\200"

	# Last exec
	local last_exec="${green}✔"
	[ "${exit}" != "0" ] && last_exec="${red}✘"
	PS1+="${bracket_color}[${last_exec} (${exit})${bracket_color}]"

	# User, host, ssh and screen
	## SSH
	local ssh_prompt=""
	[[ "${SSH_CLIENT}" != "" || "${SSH2_CLIENT}" != "" ]] && ssh_prompt="${yellow}SSH${purple}:"
	## Screen
	local screen_prompt=""
	[ "${STY}" != "" ] && screen_prompt="${purple}:${gray}${STY}"
	## User & host + composition.
	PS1+="${bracket_color}[${root_color}\u${purple}@${ssh_prompt}${lightblue}\h${screen_prompt}${bracket_color}]"

	# Current working directory & Git branch
	## CWD
	local cwd="${yellow}\w"
	# Git branch
	local git_prompt="${cyan}$(__git_ps1)"
	# Composition
	PS1+="${bracket_color}[${cwd}${git_prompt}${bracket_color}]"

	##
	# Line 2
	##

	# Prompt
	PS1+="\n${root_color}\342\224\224\342\224\200\342\224\200> ${reset}"
}

PROMPT_COMMAND="__prompt"