n00b question on spacing

[Robert Kern]

On 2013-06-25 01:22, Mark Janssen wrote:
> On Mon, Jun 24, 2013 at 4:48 PM, alex23 <wuwei23 at gmail.com> wrote:
>> On 23/06/2013 3:43 AM, Mark Janssen wrote:
>>>
>>> There was a recent discussion about this (under "implicit string
>>> concatenation").  It seems this is a part of the python language
>>> specification that was simply undefined.
>>
>>
>> It's part of the language reference, not an accidental artifact:
>> http://docs.python.org/2/reference/lexical_analysis.html#string-literal-concatenation
>
> When I say "specification", I mean "specified in the formal notation"
> (BNF, etc).

There is quite a bit of Python's lexical analysis that is specified in places 
other than the formal notation. That does not mean it is undefined. It is well 
defined in the lexer code and the documentation. You suggest that a "rule 
probably should be added to the lexer to make this explicit." That is not 
necessary. The rule is already there.

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco