From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Dmitry Gutov Newsgroups: gmane.emacs.devel Subject: Re: Debouncing slow mode line constructs (was: Emacs design and architecture. How about copy-on-write?) 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Thu, 21 Sep 2023 07:56:26 -0400 (EDT) Content-Language: en-US In-Reply-To: <87fs37zrjx.fsf@localhost> Received-SPF: pass client-ip=66.111.4.25; envelope-from=dmitry@gutov.dev; helo=out1-smtp.messagingengine.com X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-1.473, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:310887 Archived-At: On 21/09/2023 14:36, Ihor Radchenko wrote: > What about automatically debouncing slow :eval constructs in the mode > line? If we make sure that :eval constructs running longer than a > threshold do not run too frequently, it can certainly improve user > experience. Sounds worth looking into. Though if we just do this silently, it can hide performance problems, both discouraging the mode-line authors from fixing them, and creating odd behaviors (from the user's POV) when something which should change, doesn't. BTW, most advanced mode-lines (including smart-mode-line, which I use, and is reasonably fast) use the :eval constructs pretty much everywhere.