a hopefuly more improved version of the `helpfix` function

helpfix.sh

#!/bin/bash

helpfix() {
    local status=$?
    test $status -eq 0 && return

    local command
    local stdout

    command=$(mktemp)
    fc -ln -1 >"$command"
    if grep -Eq '\S\s+(-h|--help)(\s|$)' "$command"; then
        stdout=$(mktemp)
        bash "$command" &>"$stdout"

        while test "$status" -ne 0 && ! grep -Eq '^\s+-' "$stdout"; do
            if grep -Eq '\s-h(\s|$)' "$command"; then
                sed -Ei 's/\s-h(\s|$)/ --help\1/' "$command"
            elif grep -Eq '\s--help(\s|$)' "$command"; then
                sed -Ei 's/\s--help(\s|$)/ -help\1/' "$command"
            else
                break
            fi

            bash -x "$command" |& tee "$stdout"
            status=${PIPESTATUS[0]}
        done
    fi

    rm -f "$command" "$stdout"
    return "$status"
}
PROMPT_COMMAND=helpfix"${PROMPT_COMMAND:+;$PROMPT_COMMAND}"