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On Wed, Sep 29, 2010 at 12:17 AM, Marcus <> wrote:

What's so bad about a BOM?

BOM is not bad for UCS-2 or UCS-4, what bad is utf-8 + BOM.

BOM in UCS-2 or UCS-4 is a single ucs character which is not valid in anywhere else (thus not causing any problem).

utf-8 is designed to have backwards compatibility with ascii *and* many local encodings, the utf-8 bom appears to be 3 valid characters in iso8859 and many european encodings. which adds a lot of complexibility in processing them and breaks backward compatibility of many existing Unix utilities.