String.toUpperCase() does not uppercase accents

[espruino-discuss]

Posted at 2020-06-21 by Mrbbp

If i upperCase string with accents, it does not work on accents!

let txt= "béèàîâ";
txt = txt.toUpperCase();
console.log(txt); // Béèàîâ
let txtUp = "bÉÈÀÎÂ";
txtUp = txtUp.toUpperCase();
console.log(txtUp); // BÉÈÀÎÂ
for( let c of txt) {
  console.log(c, c.charCodeAt(0));
}
for( let c of txtUp) {
  console.log(c, c.charCodeAt(0));
}

espruino pico firmware 2v05.100 chrome appweb ide 0.73.7

[gfwilliams]

Posted at 2020-06-22 by @gfwilliams

For others, this is now reported in the Espruino bug tracker: espruino/Espruino#1866

Espruino was originally only designed with ASCII in mind, so this doesn't work with char codes >127

It shouldn't be too hard to fix, and for now you could actually overwrite String.prototype.toUpperCase with a JS version if you need it in a hurry