1red="\e[31m"
 2grn="\e[32m"
 3ylw="\e[33m"
 4cyn="\e[36m"
 5blu="\e[34m"
 6prp="\e[35m"
 7bprp="\e[35;1m"
 8gry="\e[94m"
 9rst="\e[0m"
10
11git_branch() {
12    [[ "$(git rev-parse --is-inside-work-tree 2> /dev/null)" = "true" ]] && {
13        local git_status="$(git status 2> /dev/null)"
14        local on_branch="On branch ([^${IFS}]*)"
15        local on_commit="HEAD detached at ([^${IFS}]*)"
16        status="$(git status --porcelain 2> /dev/null)"
17        local exit="$?"
18
19        if [[ "$exit" -eq 0 ]]; then
20            if [[ "${#status}" -eq 0 ]]; then
21                color="${grn}"
22                sym="•"
23            else
24                color="${red}"
25                sym="×"
26            fi
27        else
28            printf ''
29        fi
30
31
32        if [[ $git_status =~ $on_branch ]]; then
33            local branch=${BASH_REMATCH[1]}
34            printf '%b'  " ($branch $color$sym$rst)"
35        elif [[ $git_status =~ $on_commit ]]; then
36            local commit=${BASH_REMATCH[1]}
37            printf '%b' " ($commit $color$sym$rst)"
38        fi
39    }
40}
41
42short_pwd() {
43    wd=$(dirs +0)
44    sed 's:\([^/]\)[^/]*/:\1/:g' <<< "${wd/#$HOME/\~}"
45}
46
47prompt_pwd() {
48    printf '%b' "\001${cyn}\002$(short_pwd)\001${rst}\002"
49}
50
51rootornot() {
52    [[ "$(id -u)" -eq 0 ]] &&
53        printf '%b' "\001${red}\002#\001${rst}\002"
54}
55
56PS1='\n$(prompt_pwd)$(git_branch)\n▲$(rootornot) '
57PS2="> "