From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Vivien Kraus via General Guile related discussions Newsgroups: gmane.lisp.guile.user Subject: Re: Exception handler installed when handling a continuable exception Date: Thu, 30 Sep 2021 23:39:26 +0200 Message-ID: References: <986e0a16d3b1197142986916235090ae94c8e245.camel@telenet.be> Reply-To: Vivien Kraus Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19138"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Evolution 3.34.2 To: Maxime Devos , guile-user@gnu.org Original-X-From: guile-user-bounces+guile-user=m.gmane-mx.org@gnu.org Thu Sep 30 23:39:55 2021 Return-path: Envelope-to: guile-user@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 1mW3mV-0004iT-Hr for guile-user@m.gmane-mx.org; Thu, 30 Sep 2021 23:39:55 +0200 Original-Received: from localhost ([::1]:60138 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mW3mT-0005yk-C9 for guile-user@m.gmane-mx.org; Thu, 30 Sep 2021 17:39:53 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:41098) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mW3mG-0005ya-Qh for guile-user@gnu.org; Thu, 30 Sep 2021 17:39:41 -0400 Original-Received: from planete-kraus.eu ([89.234.140.182]:46844) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_CHACHA20_POLY1305:256) (Exim 4.90_1) (envelope-from ) id 1mW3mE-0000mo-LJ for guile-user@gnu.org; Thu, 30 Sep 2021 17:39:40 -0400 Original-Received: from planete-kraus.eu (localhost.lan [127.0.0.1]) by planete-kraus.eu (OpenSMTPD) with ESMTP id 3326e5df; Thu, 30 Sep 2021 21:39:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=planete-kraus.eu; h= message-id:subject:from:to:date:in-reply-to:references :content-type:mime-version:content-transfer-encoding; s=*; bh=86 GLoanBg/bZUfchOiJJFhLatrM=; b=vVsVhFNnSzSUrjCuUWIZblXjUmEDFXCLpw HwFvlqXoAg9WExFADoqMqk+hU+Asi7DVwD/fwwoLtlgeZ1rJWjKrZZZ5TynNJOqf C0pb8fPl1vO2fTs+Z1mstaDtCS29vP4ltHf5cWzFhsOEykMAFwGHvzqQxkoaOHV7 61YtpTUVQ= Original-Received: by planete-kraus.eu (OpenSMTPD) with ESMTPSA id ae87bd54 (TLSv1.3:AEAD-CHACHA20-POLY1305-SHA256:256:NO); Thu, 30 Sep 2021 21:39:27 +0000 (UTC) In-Reply-To: <986e0a16d3b1197142986916235090ae94c8e245.camel@telenet.be> Received-SPF: pass client-ip=89.234.140.182; envelope-from=vivien@planete-kraus.eu; helo=planete-kraus.eu 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, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-user-bounces+guile-user=m.gmane-mx.org@gnu.org Original-Sender: "guile-user" Xref: news.gmane.io gmane.lisp.guile.user:17791 Archived-At: Hello, I finally figured it out: Le mercredi 25 août 2021 à 21:08 +0200, Maxime Devos a écrit : > This also happens without #:continuable?. > Here's a simpler test case: > > (with-exception-handler > (lambda (exn) > (catch #t > (lambda () (error "to be caught")) > (lambda e (pk 'caught! e)))) > (lambda () (error "oops"))) > ---> In procedure raise-exceptiont: to be caught > > I don't know if this is a bug. It is not, it was in the documentation the whole time. The effective handler is the outmost handler, unless #:unwind? is #t. I was tricked by the obscure scheme jargon, but this works as expected: (with-exception-handler (lambda (exn) (catch #t (lambda () (error "to be caught")) (lambda e (pk 'caught! e)))) (lambda () (error "oops")) #:unwind? #t)