custom bash prompt with git branch displayed

.bashrc

# Display the git branch if current folder is a git repo.
# the small square before the branch name is the unicdeo symbo \ue0a0
#
# ┌─[user@host:folder git_branch]
# └> $ 
# 

# Install git-prompt.sh as ~/.git-prompt.sh (https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh)
# Add the following line in your ~/.bashrc
[ -f ~/.git-prompt.sh ] && source ~/.git-prompt.sh
__my_git_ps1(){
    [ -f ~/.git-prompt.sh ] && PS1_GIT=$(__git_ps1 "%s") || PS1_GIT=''
    [ -n "$PS1_GIT" ] && PS1_GIT=$' \033[00;35m\ue0a0'$PS1_GIT$'\033[0;34m'
    echo "$PS1_GIT"
}

# find the section settin up PS1 in a color terminal
# and replace PS1 with the one below
PS1='\[\033[0;34m\]┌─[\[\033[00;32m\]\u@\h\[\033[00m\]:\[\033[00;34m\]\W$(__my_git_ps1)]\n└> \[\033[0;36m\]\$ \[\033[0m\]'