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Re: [PATCH] url: Wrap cookie headers in url-http--encode-string.

From: Alain Schneble
Subject: Re: [PATCH] url: Wrap cookie headers in url-http--encode-string.
Date: Fri, 9 Sep 2016 17:15:50 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (windows-nt)

Stefan Monnier <address@hidden> writes:

>> (string-bytes cookie-val)
>> => 131
> This says that the internal representation of the cookie-val string uses
> up 131 bytes.
>> (string-bytes (encode-coding-string "æøå" 'utf-8))
>> => 6
> Note that `length' should return the same value, since the string
> returned by encode-coding-string should be unibyte (i.e. is a sequence of
> bytes, rather than sequence of characters).
>> (string-bytes (concat (encode-coding-string "æøå" 'utf-8) cookie-val))
>> => 143 ' why?
> Because the concatenation needs to convert the bytes held in the first
> string into chars.  The internal representation of bytes >=128 as chars
> takes up 2 bytes.

Your last sentence explains the behavior I did not understand.  Thanks!

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