The trouble with ambiguous grammars

Brendan Eich brendan at
Mon Oct 20 11:46:58 PDT 2008

On Oct 20, 2008, at 11:44 AM, Brendan Eich wrote:

> On Oct 20, 2008, at 11:35 AM, Waldemar Horwat wrote:
>> Brendan Eich wrote:
>>> On Oct 17, 2008, at 4:16 PM, Waldemar Horwat wrote:
>>>> The old ES4 grammar is machine-verified LR(1).  It's on:
>>> One based on ES3 would be helpful for ES3.1 and Harmony. Someone
>>> needs to invest effort here. If not you, who? This is as good a
>>> time as any to call for capable potential volunteers to scope the
>>> work and, if they are willing, and step forward.
>> I'll do it for both.  For Harmony it's not clear what's in and out
>> at this point, so I'm somewhat at a loss as to what to put in there.
> Testing ideas from
>  pages and (other than let expressions,

Or (in the case of 
  lambda with expression body syntax, as opposed to block body syntax.


> which are already found
> wanting) validating or invalidating them would be most helpful.  
> Thanks,
> /be
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