Latin Small Letter o with circumflex and acute character count as 2 not 1 char. for ex Ồ this char count as a 2 characters

[ankur62]

When one enter below text as tweet

"ℹ️ Ồ fire Building how are you now some time dfh djas. jnn ja. nj jnj hat those occupying a building, when faced with a fire, can evacuate u rewu u hrew uh rhweh rwe uhuerw u. uhh h uh uh uh u uhuhu huh wjr we of th. Building Regulations and associated guid is now for the time.‬"

Expected behavior

this post count is 280 character. as per Twitter website

because twitter count "Ồ" is a 2 character.
please see below link of twitter

https://developer.twitter.com/en/docs/basics/counting-characters

Actual behavior

As per your code is give 279 character

list of questions

(1) How can i solve this issue?
(2) can we told me when you get all latest library of twitter framework?
(3) How can we use twitter text library in iOS SDK objective c which is available in php without any credential like token, consumer key and so on.