[#6DDC1DACC49E7E2B8A33BA18E0281ADD0F4C269E]
Set the user
url& set_user(core::string_view s);
This function sets the user part of the userinfo to the string. Any special or reserved characters in the string are automatically percent-encoded.
assert( url().set_user("john doe").encoded_userinfo() == "john%20doe" );
this->has_authority() == true && this->has_userinfo() == true
Linear in `this->size() + s.size()`.
Strong guarantee. Calls to allocate may throw.
userinfo = [ [ user ] [ ':' password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )