Re: declare-function in files from Gnus (hashcash.el, imap.el)

[Glenn Morris <rgm@gnu.org>]

Reiner Steib wrote:

> $ grep declare-function emacs/lisp/net/imap.el
> (unless (fboundp 'declare-function) (defmacro declare-function (&rest r)))

You need to wrap that in an (eval-and-compile), or use the --eval route.

> If some code test (fboundp 'declare-function) it probably expects that
> `declare-function' exists an DTRT.  And it might be confusing if the
> availability of `declare-function' depends on whether or not the user
> has loaded such a package.

declare-function does nothing. It will always do nothing. It exists
solely for the benefit of the byte-compiler. Without the supporting
code in bytecomp.el, it doesn't matter what defines it or where. It
makes no sense to test (fboundp 'declare-function).