2.2.48 [HTML] Section 17.13.1, Form submission method
Note. The "get" method restricts form data set values to ASCII characters.
All Document Modes (All Versions)
When submitting form data with the get method,
non-ASCII characters are percent-encoded from 8-bit Unicode Transformation
Format (UTF-8) octets. For example, the character LATIN CAPITAL LETTER A WITH
GRAVE would be represented as