Re: [apps-discuss] Fwd: I-D Action: draft-yevstifeyev-ftp-uri-scheme-04.txt

Mykyta Yevstifeyev <evnikita2@gmail.com> Sat, 16 July 2011 09:22 UTC

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Date: Sat, 16 Jul 2011 12:22:46 +0300
From: Mykyta Yevstifeyev <evnikita2@gmail.com>
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Subject: Re: [apps-discuss] Fwd: I-D Action: draft-yevstifeyev-ftp-uri-scheme-04.txt
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16.07.2011 10:57, "Martin J. Dürst" wrote:
> On 2011/07/16 10:24, Frank Ellermann wrote:
>> On 15 July 2011 06:02, "Martin J. Dürst" wrote:
>>
>>> Please read the text after the
>>>     reserved    = gen-delims / sub-delims
>>> ABNF rule in RFC 3986.
>>
>> Okay, but it doesn't explain the "lost"<national>  in RFC 1738:
>>   national = "{" | "}" | "|" | "\" | "^" | "~" | "[" | "]" | "`"
>
> At that time, various versions of ISO 646 were still in use (or at 
> least feared to still be in use) which would have meant that these 
> codepoints would have shown up as different glyphs in some 
> environments (e.g. äöüÄÖÜß in the German version of ISO 646). As time 
> moved on, this kind of concern grew smaller and smaller.
BTW, I also recall something like this in RFC 20, eg.:

>     5/13        ]           Closing Bracket [3]
> [etc.]
> [...]
>     ------
>        3 These characters should not be used in international interchange
>     without determining that there is agreement between sender and
>     recipient.
Mykyta Yevstifeyev