Tiny optimization to create less copies:
proc makeSignature(word: string): string =
let ascii = unidecode(word)
result = strutils.toLowerAscii(ascii)
result.sort(lower, system.cmp) # or algorithm.sort(result, lower,
system.cmp)
RunNote that there is also the [strtabs](https://nim-lang.org/docs/strtabs.html) module for efficient tables of strings to strings and case insensitivity.
