Re: Warning: `mapcar' called for effect; use `mapc' or `dolist'

[Katsumi Yamaoka]

>>>>> In http://article.gmane.org/gmane.emacs.gnus.general/65434
>>>>>   I wrote:

> For instance, `mapcar' used in `gnus-group-highlight-line'
> cannot be replaced with `mapc' even if the compiler warns it.

>>>>> In http://article.gmane.org/gmane.emacs.gnus.general/65439
>>>>>   Reiner Steib wrote:

> `mailp' is used implicitly through the variable `gnus-group-highlight'
> which is let-bound to `list'.  `list' is used in the body of the
> let-form.

>>>>> Richard Stallman wrote:

> So if this warning really happens, it is a bug.
> Can it be reproduced?

When I wrote the first message I saw that the byte compiler
warned about the usage of mapcar in `gnus-group-highlight-line',
but it has gone after I rebuilt Emacs after I wrote that message.
I also tried Emacs built with the source of two weeks ago, but it
didn't happen.  That's a mystery, but I don't intend to inquire
into it further.

Regards,