From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Tim Landscheidt Newsgroups: gmane.emacs.help Subject: Re: How to test for native JSON support? Date: Tue, 04 May 2021 11:40:41 +0000 Organization: http://www.tim-landscheidt.de/ Message-ID: <87y2cuybeu.fsf@passepartout.tim-landscheidt.de> References: <87k0ohuybx.fsf@fastmail.fm> <785b4132-da32-0da8-519d-b39a58270f32@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17828"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:POXAxw/tl2W7ngImxkyWMbaFngo= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue May 04 13:43:45 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ldtSq-0004Y8-Jl for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 04 May 2021 13:43:44 +0200 Original-Received: from localhost ([::1]:59726 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ldtSp-0006Ll-N0 for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 04 May 2021 07:43:43 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:44520) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ldtQ0-0005Tt-Ok for help-gnu-emacs@gnu.org; Tue, 04 May 2021 07:40:52 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:47590) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ldtPz-0000q9-4b for help-gnu-emacs@gnu.org; Tue, 04 May 2021 07:40:48 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1ldtPx-0001KJ-39 for help-gnu-emacs@gnu.org; Tue, 04 May 2021 13:40:45 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.248, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:129418 Archived-At: Nikolay Kudryavtsev wrote: > json-serialize would return nil if libjansson library is not > available during the execution time. So the scenario would > be someone building Emacs with json support, then forgetting > to put libjansson on his path and/or moving the binary to > another machine. Not very likely to happen on any POSIX > systems, but a more or less tangible case on Windows. That's a rather unexpected, at least undocumented failure mode (vulgo: a bug). IMNSHO in that case json-serialize should either "work" or throw an error. Tim