[issue4815] idle 3.1a1 utf8

[Martin v. Löwis]

Martin v. Löwis <martin at v.loewis.de> added the comment:

> utf8 has a special flag

No, it doesn't.

> as a special mark for editors.

That's the BOM, or UTF-8 signature. It's optional, and UTF-8-encoded
files typically do *not* have the UTF-8 signature.

> Even after making change in 
> it in IDLE, it does not became real utf8. 

Your understanding of UTF-8 is incorrect.

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