ES6 and Error Object properties

[P T Withington]

On 2009-11-04, at 15:28, Brendan Eich wrote:

> On Nov 4, 2009, at 12:26 PM, Brendan Eich wrote:
>
>> SpiderMonkey, when you set the JSOPTION_ATLINE runtime option flag,  
>> understands a comment of this form:
>
> //@line n
>
> //@line n "f"

Can I enable this option from my script (preferably, or Firebug as a  
second choice)?

I'm happy to adopt this syntax as being as good as any other.