Re: What should /\08/ match and do?

On Tue, Jun 08, 2010 at 10:05:23AM -0600, karl williamson wrote:
>>> Additional warning message changes
>>>   \08 \009 will generate a new message instead of
>>>   the existing wrong "Illegal octal digit ignored".
>>>   I'm thinking: "Too few digits in octal character
>>>   constant; assuming you meant '\\%04d'".
>>
>> Ah, that probably answers my question above. But too few digits? If one
>> changes the 8 and the 9 to X and Y, it won't complain about the number  
>> of digits.
>
> Wherever currently the wrong "Illegal octal digit ignored" message is  
> output and no other places, I was planning to change that to the new  
> message, whatever the wording.  That would apply to \18 in all the  
> contexts.  How about '"\18" resolved to "\0018"'?  (or "\18" resolved to  
> "\o{1}8"').  That's not adding a warning to unwarned code, since they  
> are already getting a warning (which happens to be a lie).


I fully agree a warning is justified. I also agree the current warning
is wrong. The wording '"\18" resolved to "\0018"' isn't incorrect, but
requires realizing that octal escapes are limited to 3 octals; I like
'"\18" resolved to "\o{1}8"' much more.


Abigail