Re: Writing to file as UTF8 with BOM ?

• Subject: Re: Writing to file as UTF8 with BOM ?
• From: Yvon Thoraval <email@hidden>
• Date: Thu, 26 Oct 2006 17:17:03 +0200
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• Delivered-to: email@hidden
• User-agent: Thunderbird 3.0a1 (Macintosh/20061024)

UTF-8, on the other hand, is, as the name implies, an 8-bit encoding.
It's defined in terms of bytes, not 16-bit words, so the order of
those bytes is fixed.  You don't need a BOM to distinguish between
some hypothetical *UTF-8LE and *UTF-8BE encodings.  But it still makes
sense to put a BOM in a UTF-8 file to identify that file as not only
Unicode text,  but specifically as UTF-8 text.  In fact, the UTF-8
version of the BOM, since it's 3 bytes instead of 2, is 256 times less
likely than the UTF-16 BOM to appear randomly in data.  It's therefore
even closer to a guarantee that the file has UTF-8 text instead of
something else.

best,

Yvon
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