Bash profile for fancy prompt

.bash_profile

# fancy prompt

COLOR_NONE="\[\e[0m\]"
BLACK_BOLD="\[\e[30;1m\]"
  RED_BOLD="\[\e[31;1m\]"
GREEN_BOLD="\[\e[32;1m\]"
BROWN_BOLD="\[\e[33;1m\]"
 BLUE_BOLD="\[\e[34;1m\]"
 PINK_BOLD="\[\e[35;1m\]"
 CYAN_BOLD="\[\e[36;1m\]"
WHITE_BOLD="\[\e[37;1m\]"

LIGHTNING_BOLT="⚡"
UP_ARROW="↑"
DOWN_ARROW="↓"
UD_ARROW="↕"
FF_ARROW="→"
MIDDOT="•"

# CRAZY PROMPT STUFF
function parse_git_branch {
    branch_pattern="^# On branch ([^${IFS}]*)"
    remote_pattern_ahead="# Your branch is ahead of"
    remote_pattern_behind="# Your branch is behind"
    remote_pattern_ff="# Your branch (.*) can be fast-forwarded."
    diverge_pattern="# Your branch and (.*) have diverged"

    git_status="$(git status 2> /dev/null)"
    if [[ ! ${git_status} =~ ${branch_pattern} ]]; then
        # Rebasing?
        toplevel=$(git rev-parse --show-toplevel 2> /dev/null)
        [[ -z "$toplevel" ]] && return

        [[ -d "$toplevel/.git/rebase-merge" || -d "$toplevel/.git/rebase-apply" ]] && {
            sha_file="$toplevel/.git/rebase-merge/stopped-sha"
            [[ -e "$sha_file" ]] && {
                sha=`cat "${sha_file}"`
            }
            echo "${PINK_BOLD}(rebase in progress)${COLOR_NONE} ${sha}"
        }
        return
    fi

    # don't show master branch
    branch="(${BASH_REMATCH[1]})"
    if [[ ${branch} =~ "master" ]]; then
        branch=""
    fi
    # Dirty?
    if [[ ! ${git_status} =~ "working directory clean" ]]; then
        [[ ${git_status} =~ "modified:" ]] && {
            git_is_dirty="${RED_BOLD}${LIGHTNING_BOLT}"
        }
        [[ ${git_status} =~ "Untracked files" ]] && {
            git_is_dirty="${git_is_dirty}${WHITE_BOLD}${MIDDOT}"
        }
        [[ ${git_status} =~ "new file:" ]] && {
            git_is_dirty="${git_is_dirty}${GREEN_BOLD}+"
        }
        [[ ${git_status} =~ "deleted:" ]] && {
            git_is_dirty="${git_is_dirty}${RED_BOLD}-"
        }
        [[ ${git_status} =~ "renamed:" ]] && {
            git_is_dirty="${git_is_dirty}${BROWN_BOLD}→"
        }
    fi

    # Are we ahead of, behind, or diverged from the remote?
    if [[ ${git_status} =~ ${remote_pattern_ahead} ]]; then
        remote="${CYAN_BOLD}${UP_ARROW}"
    elif [[ ${git_status} =~ ${remote_pattern_behind} ]]; then
        remote="${CYAN_BOLD}${DOWN_ARROW}"
    elif [[ ${git_status} =~ ${diverge_pattern} ]]; then
        remote="${CYAN_BOLD}${UD_ARROW}"
    fi
    if [[ ${git_status} =~ ${remote_pattern_ff} ]]; then
        remote_ff="${BLACK_BOLD}${FF_ARROW}"
    fi

    echo "${remote}${remote_ff}${BROWN_BOLD}${branch}${COLOR_NONE}${git_is_dirty}${COLOR_NONE}"
}


function set_prompt {
    PS1="\\u"
    PS1="${PS1}@"
    PS1="${PS1}\\h"
    #PS1="${PS1}$(rvm_gemset)"
    PS1="${PS1}:"
    PS1="${PS1}\\W"
    PS1="${PS1}$(parse_git_branch)"
    PS1="${PS1} \\$ "
}
PROMPT_COMMAND=set_prompt

Looks familiar.