Extracts all *.zip files in the directory even with wide-chars in it

extract.sh

#!/bin/bash

mkdir "zip"

for f in *.zip
do
    if unzip -q -u -d "${f%.zip}" "$f" ; then
        mv "$f" "zip/$f"
    else
        a=true
        unzip -Z -1 "$f" | egrep -v "^([-_\.:a-zA-Z0-9\t/, ])*\$" | while read var ; do
            fn=$(echo "$var" | LANG=C sed "s#[^-_\.:a-zA-Z0-9\t]#_#g")
            fn="${f%.zip}/$fn"
            unzip -p "$f" "$(echo "$var" | LANG=C sed "s#[^-_\.:a-zA-Z0-9\t/, ]#*#g")" > $fn || a=false
        done
        $a && mv "$f" "zip/$f"
    fi
done