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That's all we know. X-Spam_score_int: 0 X-Spam_score: 0.0 X-Spam_bar: / X-Spam_report: (0.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=1, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.io gmane.emacs.devel:252742 Archived-At: On 07.07.2020 18:04, Eli Zaretskii wrote: >> That would still potentially leave hundreds of buffers in which said >> commands have never been used. > > I don't see how this would happen. But we can cross that bridge if we > ever get to it. In the same fashion that the author of bug#41029 arrived at the number of ~6000 buffers (we could ask). Maybe some long search-and-replace? Or something more automated. I also worry about Tramp buffers, where both process invocations and traversals up the directory tree are unavoidably slower. >>>> - A project configuration can change mid-session (due to a customization >>>> of some user option, or due to an edit in some .dir-locals.el). Or >>>> simply due to 'git init'. As a result, a given file's current project >>>> can change. It will be good to be able to support that without >>>> necessitating Emacs' restart or requiring manual cache invalidation. >>> >>> I don't see how you can avoid some user command which would mean a >>> project configuration change. Alternatively, this could be solved >>> lazily, when the cached value is found to be outdated. >> >> Speaking of standards set by other editors, have you ever seen an IDE >> with an "invalidate project cache" button? I haven't. > > I didn't say anything about a need for such a knob. You are probably > misinterpreting what I wrote above. All right. If you have suggestions of how we would reliably find outdated cached values, please don't hesitate to tell. Examples of caches we could use: * file or directory -> project * project -> list of files >>> We don't need to solve every possible complication up front before we >>> decide that a method is workable, we just need to have a vague idea >>> how it could be solved when the time comes. >> >> As mentioned, I have that "vague idea" now. > > Then why are we still arguing? I thought we were having a design discussion. Does commit 4ca13d9 look good to you? It's been in master shortly after my last reply here.