[cosmo-dev] Unicode support in 0.11

[Grant Baillie]

On 6 Dec, 2007, at 14:48, Travis Vachon wrote:

> Hi folks
>
> Wanted to follow up with some conclusions and next actions regarding  
> the character support I've been working on for the last week or so.
>
> Commits 6333-6341 consist of a number of fixes and tests that  
> support and enforce (client side) the following policy for usernames:
>
> (a) Usernames must be between 3 and 32 characters; may contain any  
> Unicode character in the following range of unicode code points:  
> [#x20-#xD7FF] | [#xE000-#xFFFD] EXCEPT #x7F or #x3A
>
> In English, this means: All non-whitespace (but including space),  
> non-control characters in the Basic Multilingual Plane excluding the  
> surrogate blocks, 0x7F (DELETE), and 0x3A (COLON).

Technically, [#x80-#x9F] are control characters, too. I don't know if  
you really care whether or not those are permitted or not in  
usernames, though.

--Grant

>
>
> 0x7F and 0x3A are currently excluded because they are not allowed in  
> Basic Authentication username tokens. The decision to not support  
> characters outside of the Basic Multilingual Plane was discussed here:
>
> http://lists.osafoundation.org/pipermail/cosmo-dev/2007-November/005363.html
>
> The rest of the exclusions (control characters and whitespace other  
> than " ") are either already present according to the Cosmo  
> Management Protocol or seem self-explanatory, please let me know if  
> they aren't.
>
> I have not made any changes on the server side to enforce this  
> policy. Currently, according to the CMP spec:
>
> http://chandlerproject.org/Projects/CosmoManagementProtocol
>
> the username policy we enforce server side is:
>
> Usernames must be between 3 and 32 bytes; may contain any non- 
> whitespace character as well as ' '.
>
>
> If there are no objections to the username policy I suggest in (a),  
> I'll file a server bug to get the server logic in place.
>
> Thanks!
>
> -Travis
>
>
>
>
>
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