args.sh

#!/bin/bash
# file: args.sh
# date: 2018-08-17
# license: GPLv3 https://www.gnu.org/licenses/gpl-3.0.txt
# author: nanpuyue <[email protected]> https://blog.nanpuyue.com

LIST=(1 ' 2 3')

at(){
    for i in $@; do
        echo "$i"
    done
}

at_q(){
    for i in "$@"; do
        echo "$i"
    done
}

star(){
    for i in $*; do
        echo "$i"
    done
}

star_q(){
    for i in "$*"; do
        echo "$i"
    done
}

do_eval(){
    echo $1 $2
    echo ----------
    eval printf '"%q\n"' $2
    echo ----------
    eval $1 $2
    echo ====================
}

if [ "$1" = '-q' ]; then
    for f in at_q star_q; do
        for a in '"${LIST[@]}"' '"${LIST[*]}"'; do
            do_eval $f $a
        done
    done
else
    for f in at at_q star star_q; do
        for a in '"${LIST[@]}"' '"${LIST[*]}"' '${LIST[@]}' '${LIST[*]}'; do
            do_eval $f $a
        done
    done
fi