We switch them to hair spaces around em dashes since that looks best/expected in American English.
If you write using our iOS app, this behaviour will different in other languages. Alas, this is not yet implemented on the web.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
If you write using our iOS app, this behaviour will different in other languages. Alas, this is not yet implemented on the web.