Language extension / "behavior"

[Raymond Wiker]

If you check the HyperSpec entry for “trace”, you’ll see that it accepts implementation-specific additional arguments. I’m pretty sure I’ve seen other examples, but I cannot remember what they were just now.



> On 24 Jan 2023, at 10:47, Didier Verna <didier at didierverna.net> wrote:
> 
> 
>  Hello,
> 
> Section 1.6 Language Extensions of the standard says this:
> 
> A language extension is any documented implementation-defined behavior
> of a defined name in this standard that varies from the behavior
> described in this standard [...]
> 
> 
> It is unclear to me if the term "behavior" could encompass additional
> keyword arguments passed to a function or macro. I'm assuming here that
> the rest of this section is honored (the additional arguments wouldn't
> alter the confirming code, and their presence is not explicitly
> prohibited).
> 
> WDYT?
> 
> -- 
> Resistance is futile. You will be jazzimilated.
> 
> Lisp, Jazz, Aïkido: http://www.didierverna.info
>