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[217.227.108.198]) by smtp.gmail.com with ESMTPSA id y21-20020a1709064b1500b00722e50dab2csm8703463eju.109.2022.10.05.06.31.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 05 Oct 2022 06:31:11 -0700 (PDT) Content-Language: en-US In-Reply-To: <83a66atn7k.fsf@gnu.org> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:244539 Archived-At: On 22-10-05 15:27 , Eli Zaretskii wrote: >> From: Gerd Möllmann >> Cc: Eli Zaretskii , 58042@debbugs.gnu.org, Alan Third >> >> Date: Wed, 05 Oct 2022 13:10:03 +0200 >> >> Can somone please help me understand how this works? >> >> Let's say we are in memq called for list L. Fmemq uses FOR_EACH_TAIL, >> which can call maybe_quit, which executes arbitrary Lisp, which can >> modify L. > > "Arbitrary Lisp" being redisplay that calls various hooks, like > window-configuration-change-hook etc.? IOW, this is a macOS only > thing? I don't know. What Po Lu said sounded to me like it isn't specific to macOS (safe_call in event handlers, IIRC).