Bash history for iTerm - 2019

.bash_profile

# ITERM SESSION ID seems to have puctuation in it, replace with slash
export SESSION_ID=${ITERM_SESSION_ID//:/-}

# Unique history file per shell session.
export HISTSIZE=500
# Get only the window/tab indices as ID (w0t0p0) as the Session ID can change
# after updates/restarts/etc...
export HISTFILE="${HOME}/.bash-history-${SESSION_ID:0:6}"
# export HISTFILE="~/bash_history/.bash-history"
# export HISTFILE=$HOME/.bash_hist_${HOSTNAME/.*/}_$(basename $(tty))
export SAVEHIST=500
# New - remove if not working properly
# export HISTCONTROL=ignoreboth
# export HISTCONTROL=ignoredups

# For iTerm2 to show the directory it's in
if [[ ${SESSION_ID} ]]; then
  # Display the current git repo, or directory, in iterm tabs.
  get_iterm_label() {
    if ! git rev-parse --is-inside-work-tree >/dev/null 2>&1; then
      local directory
      directory=${PWD##*/}
      echo -ne "\\033];$directory\\007"
    else
      local branch
      local branchdir
      branchdir=$(basename "$(git rev-parse --show-toplevel)")
      branch=$(git branch 2>/dev/null | grep -e '\* ' | sed "s/^..\(.*\)/{\1}/")
      echo -ne "\\033];$branchdir $branch\\007"
    fi
  }
  export PROMPT_COMMAND=get_iterm_label;"${PROMPT_COMMAND}"
fi