Re: Survivor

yep, leur code est cassé:

$ printf "\u00e9" > grep-simple.txt
$ printf "\u0065\u0301" > grep-double.txt
$ cat grep-simple.txt 
é% $ cat grep-double.txt 
é% 
$ grep é grep-simple.txt 
é
$ grep é grep-double.txt
$ grep --version
grep (BSD grep, GNU compatible) 2.6.0-FreeBSD

En l'occurence, c'est le grep de macOS, je suppose qu'il vient d'un des BSD avec peu de changements.

Rien de tout ca dans un langage a runtime bloaté, évidemment:

import Foundation
guard CommandLine.arguments.count > 1 else {
 exit(0)
}
let input = CommandLine.arguments[1]
let single = "\u{00e9}"
let double = "\u{0065}\u{0301}"
print("They are equal: \(input == single)\(input == double)")
print("Or are they? \(input.utf8CString == single.utf8CString)\(input.utf8CString == double.utf8CString)")
print("The string sizes: \(single.count), \(single.count), \(input.count)")
print("The byte sizes: \(Data(single.utf8).count), \(Data(double.utf8).count), \(Data(input.utf8).count)")

Me sort:

They are equal: true true
Or are they? true false
The string sizes: 1, 1, 1
The byte sizes: 2, 3, 2 (ou 2, 3, 3 en fonction de l'input)