From: Pratyush Yadav <firstname.lastname@example.org> To: Junio C Hamano <email@example.com>, "brian m. carlson" <firstname.lastname@example.org> Cc: git <email@example.com>, Christian Couder <firstname.lastname@example.org>, Johannes Schindelin <Johannes.Schindelin@gmx.de> Subject: Re: [PATCH] git-gui: Perform rescan on window focus-in Date: Mon, 29 Jul 2019 14:14:29 +0530 [thread overview] Message-ID: <email@example.com> (raw) In-Reply-To: <firstname.lastname@example.org> On 29/07/19 10:39 AM, Junio C Hamano wrote: > "brian m. carlson" <email@example.com> writes: > >> These are probably pretty cheap on all but the largest repositories. I >> was worried we were enumerating all refs or all history or something >> like that. >> >>> ui_do_rescan changes the focus to the first diff. It is executed when you >>> press F5 or choose Rescan from the menu. do_rescan does not do that. >>> >>> Resetting to first diff on focus change will get annoying when you are in >>> the middle of looking at some other file. do_rescan just updates the >>> software state without changing what file you are looking at or where in >>> that file you are looking at. >> >> Yeah, this definitely seems like the right move. > > "Right move" in the sense that it would try not to change what is > being shown too much. Rescan will still not be without cost, so it > will be annoying if it happens when the user did not make any > change. > > And it is annoying even more, if the user did make change in another > window. You may make a change perhaps from the command line, write > a short e-mail about it to let others know in your MUA, and then > switch the focus back to git-gui to continue working. Refreshing > upon git-gui getting focus is no better than manually pressing F5 or > whatever at that point. It is too late at that point for spending > extra cycles without being asked without getting annoying to the user. On my system with a not-so-fast hard disk, it takes under 10ms to do a rescan (4 to 7ms usually). Using it for some time, I never felt any latency or lag. Maybe it will cause problems on other systems, but I'd like to hear from more people about it. Also, why is it no better than manually refreshing? Manually refreshing gets annoying real quick (and that's why I sent this change in the first place). Not having to hit refresh every time you make any change is pretty sweet. Yes it maybe doesn't matter as much when you open git-gui _after_ you're done making changes, and now only have to write the commit message. But if you keep it open while you are editing code, and then when you are done, you switch to it to commit, auto refresh is a great quality of life improvement. Again, on my system at least, there is no noticeable latency when switching focus. How about making rescan on focus optional? The user can disable it if they feel like it is getting in their way. > > The right time to spend cycles (in the background) in the above > sample sequence is immediately after you made a change and switch to > your MUA---while you are typing a few paragraphs, you would not mind > git-gui spending seconds to repaint. FYI, we are not just repainting, we are also syncing the repo state with the in-memory state when doing a rescan. > > So probably a more productive use of our time, if we were to futz > with git-gui, would be to figure out how git-gui can have an > background idle process that notices a change in the repository and > refreshes but only when you are *not* interacting with it (if it > does things while you are interacting with it, it would become > annoying and distracting), I would guess. Just when you come back > is the worst, and the most annoying, time to auto-refresh. > So maybe something like inotify? tcl-inotify  (a tcl extension) can be used for it I suppose, though I haven't looked into it much yet. My idea with this change was to keep it as minimal as possible. Doing a rescan on focus seems like a good compromise to me. I can look into inotify, but I'm not too aware of the performance impact it can have. Also, do you know how editors like Atom or VSCode refresh when there is a change to the tree? I've seen them auto-update the GUI when you make any changes from outside of them. I will look into tcl-inotify if there is a consensus that it is the better way to go about this. It seems like a significant time investment, and I'd rather not spend a lot of time doing something that would get rejected instantly.  http://tcl-inotify.sourceforge.net/ -- Regards, Pratyush Yadav
next prev parent reply other threads:[~2019-07-29 8:44 UTC|newest] Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-07-28 15:17 Pratyush Yadav 2019-07-28 21:36 ` brian m. carlson 2019-07-28 22:10 ` Pratyush Yadav 2019-07-28 22:32 ` Pratyush Yadav 2019-07-28 22:49 ` brian m. carlson 2019-07-29 2:24 ` Mark Levedahl 2019-07-29 2:26 ` Mark Levedahl 2019-07-29 2:28 ` Mark Levedahl 2019-07-29 8:15 ` Pratyush Yadav 2019-07-31 19:42 ` Johannes Schindelin 2019-08-01 21:52 ` Pratyush Yadav 2019-08-02 12:39 ` Johannes Schindelin 2019-08-02 20:00 ` Pratyush Yadav 2019-08-03 20:34 ` Johannes Schindelin 2019-08-04 12:53 ` Pratyush Yadav 2019-08-04 19:10 ` Johannes Schindelin 2019-08-04 20:17 ` Pratyush Yadav 2019-08-02 16:47 ` Junio C Hamano 2019-08-02 20:13 ` Pratyush Yadav 2019-08-04 18:56 ` Johannes Schindelin 2019-07-29 5:09 ` Junio C Hamano 2019-07-29 8:44 ` Pratyush Yadav [this message] 2019-07-28 21:44 ` Pratyush Yadav
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