From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Philipp Stephani Newsgroups: gmane.emacs.bugs Subject: bug#33828: 26.1; Unbound defvar across compilation units Date: Sat, 22 Dec 2018 23:40:50 +0100 Message-ID: References: <83muoybqc6.fsf@gnu.org> <87lg4i8ek3.fsf@gmail.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1545518406 28589 195.159.176.226 (22 Dec 2018 22:40:06 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 22 Dec 2018 22:40:06 +0000 (UTC) Cc: luismbo@gmail.com, 33828@debbugs.gnu.org To: =?UTF-8?Q?Jo=C3=A3o_?= =?UTF-8?Q?T=C3=A1vora?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Dec 22 23:40:02 2018 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gapwA-0007IF-67 for geb-bug-gnu-emacs@m.gmane.org; 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Sat, 22 Dec 2018 14:41:01 -0800 (PST) In-Reply-To: <87lg4i8ek3.fsf@gmail.com> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:153760 Archived-At: Am Sa., 22. Dez. 2018 um 03:46 Uhr schrieb Jo=C3=A3o T=C3=A1vora : > > Eli Zaretskii writes: > > >> From: Lu=C3=ADs Oliveira > >> Date: Fri, 21 Dec 2018 12:02:55 +0000 > >> Cc: Jo=C3=A3o T=C3=A1vora > >> > >> I think I've come across a bug. > > > > Doesn't look like a bug to me. > > Indeed, it's the behaviour described in the Emacs manual, but the > motivation is questionable: it says it's useful for shooshing the > byte-compiler's warnings. Aren't there better alternatives to do this > instead of imposing this seeming inconsistency? The better alternative is to explicitly `require' the library that defines the variable. I see the one-argument `defvar' as the variable equivalent to `declare-function' - it announces that a variable exists without defining it. (Maybe there should be a `declare-variable' macro to mirror `declare-function'.) As such, its use should be exceptional; most libraries should make sure to not have cyclic dependencies and use plain `require'.