Interactive Git Stash utility

iStash.sh

#!/bin/bash -f

function RecalcStashes {
    PS3="`git stash list | wc -l` stashes present. Enter Option > "
}

function List {
    if [[ $1 -eq 2 ]]; then
        git stash list --pretty=format:"%C(red)%h%C(reset) - %C(green)(%cr) %C(bold blue)<%an>%C(reset) off %C(red)%p: %+s"
    else
        git stash list --pretty=format:"%C(red)%h%C(reset) - %gd:%<(70,trunc)%s %C(green)(%cr) %C(bold blue)<%an>%C(reset)"
    fi
}

function Save {
    prompt=$( [[ $1 -eq 2 ]] && echo "Save unstaged as: " || echo "Save all changes as: ")
    echo -n $prompt
    read saveName
    if [[ $1 -eq 2 ]]; then
        git stash save --keep-index $saveName
    else
        git stash save $saveName
    fi
    RecalcStashes
}

function Pop {
    echo -n "Pop which stash index? "
    read idx
    git stash pop "stash@{$idx}"
    RecalcStashes
}

function Drop {
    echo -n "Discard which stash index? "
    read idx
    git stash drop "stash@{$idx}"
    RecalcStashes
}

function Apply {
    echo -n "Discard which stash index? "
    read idx
    git stash apply "stash@{$idx}"
    RecalcStashes
}

function Rename {
    echo -n "Rename which index? "
    read idx
    git stash-rename "stash@{$idx}" || echo "you need the stash-rename config shortcut for this - see inside script" && exit
    # Execute this to create config:
    # git config --global alias.stash-rename '!_() { rev=$(git rev-parse $1) && git stash drop $1 || exit 1 ; git stash store -m "$2" $rev; }; _'
    # Uses this shortcut... http://stackoverflow.com/a/25935360/134793
    # the alternative is to catch the output, use awk to get value and parse it.
    RecalcStashes
}


echo -e "\n=== Git Stash Utility ===\n"
options=("list" "list-detail" "save" "save-unstaged" "pop" "discard" "apply" "rename" "help")

reshow=1
RecalcStashes
while (( reshow )); do
    select opt in "${options[@]}" "quit"; do
        case $REPLY in
            1|2 ) List "$REPLY";;
            3|4 ) Save `echo $REPLY - 2 |bc -l`;;
            5 ) Pop;;
            6 ) Drop;;
            7 ) Apply;;
            8 ) Rename;;
            9 ) echo "Not much. Google git stash basics. Enter the menu-option's number (or q to quit). Each sub-option is interactive in its own way."; break;;
            $(( ${#options[@]} + 1 )) ) reshow=0; break;;
            'q' ) reshow=0; break;;
            *) echo "Not recognised. Enter the option-index - or 'q' to quit:"; break;;
        esac
    done
done