Re: (declare (debug 0))

[Stefan Monnier]

Stephen Gildea [2021-10-19 22:22:08] wrote:
> Stefan Monnier <monnier@iro.umontreal.ca> wrote:
>>   I must say I [had] no idea that 0 was supposed to be treated specially.
>>   
>>   I would have written (&rest sexp) instead, tho more likely I would have
>>   written nothing at all and relies on the default behavior of Edebug....
>
> If even you didn't know about (debug 0), it sounds like I should update
> the manual to recommend (debug nil) instead.
>
> I do like the idea of offering (continuing to offer) a simple shorthand
> that says "do not instrument args", even though that is the default and
> is rarely used in current code.  Adding an explicit declaration saves
> later readers/maintainers of a macro definition from having to figure
> out whether a "debug" declaration is missing.

In my experience, macros whose args should not be instrumented are not
the most common, by far, and (&rest sexp) is sufficiently short and
clear for them.  I don't see any need to have something shorter.


        Stefan