The moving fuzzy file explorer powered by fzf

fexp3

#!/bin/bash
# A simple script to make fzf a fuzzy-file explorer
# After the program exits, it should be cleared with tput rmcup, otherwise the
# terminal stays in alternate screen mode

old_folder=$(pwd)
cur_folder="$old_folder"
tree_depth=1
while true
do
    query=$(test "$keep_query" && echo "$query" || echo '')
    { read query; read key; read ret; } <<< $(
        (echo -e '.\n..'; fd -t d --color=always) \
                | fzf --height 100% --no-clear \
                    --print-query --query="$query" \
                    --header="${cur_folder/#$HOME/'~'} $query" \
                    --expect=ctrl-h,ctrl-l,ctrl-alt-m,ctrl-alt-h,ctrl-alt-l \
                    --expect=f1,f2,f3 \
                    --preview-window=right:50% \
                    --preview "tree-git-ignore -L $tree_depth -C {}"
        )
    code=$?
    keep_query=
    query=$(test "$query" && echo "$query" || echo "$ret")
    clear
    echo $code $key $ret
    case $code in
        130)
            output="$old_folder"
            break
            ;;
        0|1)
            case $key in
                ctrl-h)
                    cd ..
                    cur_folder=$(pwd)
                    ;;
                ctrl-l)
                    cd "$ret"
                    cur_folder=$(pwd)
                    ;;
                alt-enter|ctrl-alt-m)
                    output="$cur_folder"
                    break
                    ;;
                ctrl-alt-h)
                    tree_depth=$((tree_depth - 1 > 0 ? tree_depth - 1 : tree_depth))
                    keep_query=true
                    ;;
                ctrl-alt-l)
                    tree_depth=$((tree_depth + 1))
                    keep_query=true
                    ;;
                f1)
                    # some ingame help here
                    ;;
                f2)
                    # custom script to see image in terminal
                    imgp --no-clear
                    ;;
                f3)
                    # custom script to open file in remote neovim session
                    nvrp --no-clear
                    ;;
                *)
                    cd "$ret"
                    output=$(pwd)
                    break
                    ;;
            esac
            ;;
        *)
            output="$old_folder"
            break;
            ;;
    esac
done

echo $output
exit $code