Hopefully last word on Use Strict Directive syntax

Allen Wirfs-Brock Allen.Wirfs-Brock at microsoft.com
Tue Jun 9 16:28:07 PDT 2009


>-----Original Message-----
>From: es5-discuss-bounces at mozilla.org [mailto:es5-discuss-
>bounces at mozilla.org] On Behalf Of David-Sarah Hopwood
...
>
>>> If you get into the habit of
>>> omitting semicolons, you can also run into trouble with things that
>look
>>> like they're strict but are not:
>>>
>>> function f(x) {
>>>  "use strict"
>>>  +x ? delete p : delete q;
>>> }
>
>This hazard, OTOH, can't be fixed, because the "use strict" is not a
>directive in this case, and you would have to know that it is a
>directive
>before you could require a semicolon after it.
>

This seems like a strong argument for not trying to forbid semicolon insertion in the Directive Prologue. 

My current thinking is that we shouldn't try to outlaw it in the Directive Prologue.

Allen


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