Search

Yes. maxlength and JS length both. For most text you'd never notice. It's names, and anyone using emoji, that hit it.

So my maxlength on the HTML form is counting UTF-16 units?

Rust's s.len() is bytes, chars().count() is code points, and graphemes need a crate. At least it's obvious you're choosing.

Third bug report this year from a form that "limits names to 20 characters". 'é'.length is 2 in JS (e + combining accent), while 'é' typed as one code point is 1. They look identical. Most emoji are 2, because length counts UTF-16 units. T…

That fixed it, thanks both! José is back.

And keep newline="" on that open() call if you're using the csv module.

Nothing wrong, Excel is guessing. Without a BOM it assumes the Windows codepage when you double click a CSV. Use encoding="utf-8-sig" and it'll write the three BOM bytes at the start, and Excel will then read it as UTF-8. Don't use it for f…

My class list has names like José and Zoë. I write it from Python with open("list.csv", "w", encoding="utf-8") and LibreOffice shows it correctly. On the school computers with Excel it shows José. What did I do wrong?