[#5EAF2405CF5AFC5E41A669F5AB83ACCECB732788]
Return the buffer size needed for percent-encoding
templatestd::size_t encoded_size( core::string_view s, CharSet const& unreserved, encoding_opts opt = = {}) noexcept;
This function returns the exact number of bytes necessary to store the result of applying percent-encoding to the string using the given options and character set. No encoding is actually performed.
assert( encoded_size( "My Stuff", pchars ) == 10 );
Throws nothing.