[plt-scheme] Does `(a,b'c) follow r6rs formal grammar?

I see your point. Thanks.
Jos

---- Original Message ----- 
From: "Abdulaziz Ghuloum" <aghuloum at gmail.com>
To: "Jos Koot" <jos.koot at telefonica.net>
Cc: "Abdulaziz Ghuloum" <aghuloum at gmail.com>; "Jon Stenerson" <jonstenerson at comcast.net>; <plt-scheme at list.cs.brown.edu>
Sent: Sunday, June 28, 2009 8:14 PM
Subject: Re: [plt-scheme] Does `(a,b'c) follow r6rs formal grammar?


> 
> On Jun 28, 2009, at 8:10 PM, Jos Koot wrote:
> 
>> I think 4.2.1  Formal account excludes quotes and commas from  
>> identifiers (except when escaped, of course)
>> They are listed as seperate lexemes.
> 
> This is correct but irrelevant to the question here.  (e.g., "a" is  
> not valid inside numbers, but that doesn't make "5a" two tokens: it's  
> a lexical syntax error)
> 
> To the OP: just put spaces; they're cheap. :-)
> Also, IMO, being liberal in accepting moderately invalid syntax is  
> not as severe an issue as rejecting a valid one.
> 
> Aziz,,,
>