#!/usr/bin/env -S sh -c 'echo "Not a user script. source(aka .) only"'

# Remove duplicates from PATH
OLDPATH="$PATH"; NEWPATH=""; colon=""
while [ "${OLDPATH#*:}" != "$OLDPATH" ]; do
    entry="${OLDPATH%%:*}"; search=":${OLDPATH#*:}:"
    [ "${search#*:"$entry":}" = "$search" ] && [[ -d $entry ]] && NEWPATH="$NEWPATH$colon$entry" && colon=:
    OLDPATH="${OLDPATH#*:}"
done
NEWPATH="$NEWPATH:$OLDPATH"
export PATH="$NEWPATH"
unset NEWPATH OLDPATH colon entry search