#!/bin/sh

num=100000
for arg in 'a' '\x80' '\u0100' '\U00010000'
do
    for prefix in 'a' '\x80' '\u0100' '\U00010000'
    do
        fmt="'${prefix}%s' + 'a' * 1000"
        t="$(./python -m timeit -r 10 -n $num -s "f = ${fmt}" -- "f % '${arg}'" |
             sed -re 's/^.*: (.*) per loop.*/\1/')"
        printf '%10s  %s\n' "$t" "(${fmt}) % '${arg}'"
    done
done
for arg in 'a' '\x80' '\u0100' '\U00010000'
do
    for prefix in 'a' '\x80' '\u0100' '\U00010000'
    do
        fmt="'${prefix}{}' + 'a' * 1000"
        t="$(./python -m timeit -r 10 -n $num -s "f = ${fmt}" -- "f.format('${arg}')" |
             sed -re 's/^.*: (.*) per loop.*/\1/')"
        printf '%10s  %s\n' "$t" "(${fmt}).format('${arg}')"
    done
done