Stefan Monnier <monnier@iro.umontreal.ca> schrieb am Sa., 17. Juni 2017 um
15:53 Uhr:

> > +            (when (or (function-get function 'pure)
> > +                      (function-get function 'side-effect-free))
> > +              (insert "\nThis function does not change the match
> data."))
>
> Wouldn't it be more useful to say it doesn't have side-effects (which
> would obviously imply it doesn't change the match-data, along with all
> other global state)?
>
>
I'd prefer to mention the match data explicitly, because users might not be
aware that they are part of the global state. Maybe something like "This
function does not (access|change) global state, including the match data"
(where "access" can be used for the pure ones).