Reply to post: not about utf

Twitter to upgrade from micro-blogging to milli-blogging with 280 chars

Frumious Bandersnatch

not about utf

SMS did (still does?) have a 140-byte limit because it was piggy-backing on an existing control channel. The standard didn't include UTF-8 support so what happened was that if you used any Unicode char, a flag was set and all the message was sent as UTF-16, thus losing half the space or being twice as expensive.

Twitter has always, AFAIK, supported UTF (I guess UTF-8). The 140-char thing counts actual characters, not bytes.

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