Re: Bison 3.5 released [stable]

[Akim Demaille]

Hi Christian,

> Le 13 déc. 2019 à 19:26, Christian Schoenebeck <address@hidden> a écrit :
> 
> On Freitag, 13. Dezember 2019 18:15:55 CET Akim Demaille wrote:
>> The purpose of string literals has been clarified.  Indeed, they are used
>> for two different purposes: freeing from having to implement the keyword
>> matching in the scanner, and improving error messages.  Most of the time
>> both can be achieved at the same time, but on occasions, it does not work so
>> well.  We promote their use for error messages.  We still support the
>> former case (at least for historical skeletons), but it is _not_ a
>> recommended practice.  The documentation now warns against this use.  A new
>> warning, -Wdangling-alias, should help users who want to enforce the use of
>> aliases only for error messages.
> 
> That's limited to string literals (e.g. "foo"), it does not apply to 
> character 
> literals (e.g. 'f''o''o') as well, does it?

No, I really mean string literals.

> Because character literal 
> sequences are indeed commonly used to handle scanner tasks on parser side and 
> I haven't seen issues with the latter in years.

I've never seen it used :)  I think it's a weird idea, but it incurs no
technical constraints onto Bison, so I don't have any problem with it.

Cheers!