Serhiy Storchaka storchaka at gmail.com
Wed Mar 16 03:14:05 EDT 2016

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On 16.03.16 02:28, Guido van Rossum wrote:
> I agree that the spirit of the PEP is to stop at the first coding
> cookie found. Would it be okay if I updated the PEP to clarify this?
> I'll definitely also update the docs.

Could you please also update the regular expression in PEP 263 to
"^[ \t\v]*#.*?coding[:=][ \t]*([-.a-zA-Z0-9]+)"?

Coding cookie must be in comment, only the first occurrence in the line 
must be taken to account (here is a bug in CPython), encoding name must 
be ASCII, and there must not be any Python statement on the line that 
contains the encoding declaration. [1]

[1] https://bugs.python.org/issue18873

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