There is only a short list of characters that can be safely wrapped in the component of the URL path.
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
All other characters must be removed (if you create a "slug") or escaped.
Deletion can be done using regular expression /[^a-zA-Z0-9-._~]/.
Sketching can be done with encodeURIComponent().
ICONV (.. é e € EUR), , , ,