Git auto-complete and prompt stuff for .bash_profile

.bash_profile

# Paste the below into your .bash_profile, make tweaks, and restart your terminal

# Change these to where your git-completion.bash and git-prompt.sh live
# If you don't have them locally, get them from:
# https://raw.githubusercontent.com/git/git/master/contrib/completion/git-prompt.sh
# https://github.com/git/git/blob/master/contrib/completion/git-completion.bash

GIT_COMPLETION_FILE="/usr/local/git/current/share/git-core/git-completion.bash"
GIT_PROMPT_FILE="/usr/local/git/current/share/git-core/git-prompt.sh"

# Git tab-completion
if [ -f ${GIT_COMPLETION_FILE} ]; then
  . ${GIT_COMPLETION_FILE}
fi

# Stuff to create a basic prompt
# Color codes -- to add more, see https://misc.flogisoft.com/bash/tip_colors_and_formatting
GREEN='\[\e[32m\]'
CYAN='\[\e[36m\]'
YELLOW='\[\e[33m\]'
RED='\[\e[31m\]'
LTGREEN='\[\e[92m\]'
LTCYAN='\[\e[96m\]'
LTYELLOW='\[\e[93m\]'
LTRED='\[\e[91m\]'
LTGRAY='\[\e[37m\]'
RESET='\[\e[0m\]'

# Splitting out the parts of the prompt for maintainability
# To change the color of a part of the prompt, change its variable
# to one of the above

# user
PS1_USER="${LTGREEN}\u${RESET}"
# at-sign
PS1_AT="${LTRED}@${RESET}"
# host
PS1_HOST="${LTGREEN}\h${RESET}"
# current working directory (not full path)
PS1_DIR="${CYAN}\W${RESET}"

# Git prompt to show extra info when in a git repo
if [ -f ${GIT_PROMPT_FILE} ]; then
  . ${GIT_PROMPT_FILE}
  # Configure git-prompt
  export GIT_PS1_SHOWDIRTYSTATE=true
  export GIT_PS1_SHOWSTASHSTATE=true
  export GIT_PS1_SHOWCOLORHINTS=true
  export GIT_PS1_SHOWUNTRACKEDFILES=true
  # Create the git prompt element of the prompt
  PS1_GIT_STATUS="${YELLOW}\$(__git_ps1)${RESET}"
  # Build up the real prompt
  export PS1="[${PS1_USER}${PS1_AT}${PS1_HOST} ${PS1_DIR}]${PS1_GIT_STATUS}\$ "
else # if you don't have git-prompt.sh in the path
  export PS1="[${PS1_USER}${PS1_AT}${PS1_HOST} ${PS1_DIR}]\$ "
fi