Last call for consensus on format-control char. issues

Brendan Eich brendan at
Wed Jun 17 11:42:09 PDT 2009

On Jun 17, 2009, at 11:09 AM, Allen Wirfs-Brock wrote:

>> -----Original Message-----
>> From: Brendan Eich [mailto:brendan at]
>> This is strictly simpler. Is
>> there any known user-sourced motivation for allowing ZW{,N}J in
>> identifiers?
> Not that I know of.  I'm simply going by earlier discussions on this  
> list and meetings and the following from 
>  :
> "...However, visible distinctions created by certain format  
> characters (particularly the Join_Control characters) are necessary  
> and make necessary distinctions in certain languages. A blanket  
> exclusion of these characters makes it impossible to create  
> identifiers based on certain words or phrases in those languages..."

Sure, that rationale makes sense. Just looking for bug reports  
targeting browser vendors, or similar such real-world JS user  
feedback. Happy to go with what's spec'ed (as amended).


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