path: root/2024/info/emacs30-after.md

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# Transcript


[[!template new="1" text="""Introduction""" start="00:00:00.000" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""Hello, and welcome to Emacs 30 Highlights at EmacsConf 2024.""" start="00:00:00.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Before I begin, I'd like to thank the organizers""" start="00:00:06.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and everyone involved for putting this all together.""" start="00:00:08.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""While this talk is being pre-recorded,""" start="00:00:11.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""my experience from the last few years""" start="00:00:13.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""assures me that it will be a great experience for everyone.""" start="00:00:15.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""My name is Philip Kaludercic.""" start="00:00:19.133" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I am a core contributor and ELPA co-maintainer.""" start="00:00:21.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I was honored when Sacha asked me""" start="00:00:24.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to take over the slot for this year.""" start="00:00:26.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""In the past few iterations,""" start="00:00:28.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""John Wiegley has filled a similar presentation""" start="00:00:29.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""focusing on more general Emacs development updates.""" start="00:00:32.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This year, I will specifically focus on""" start="00:00:35.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""highlight features from the upcoming Emacs 30 release,""" start="00:00:38.502" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which might or might not have been released""" start="00:00:41.933" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""by the time you are seeing this.""" start="00:00:44.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""As you can imagine, everything new about Emacs""" start="00:00:48.060" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""can always be found in the Emacs NEWS file.""" start="00:00:51.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Or, alternatively,""" start="00:00:55.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""if one doesn't want to read through the 3,000 lines here,""" start="00:00:57.133" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""one can also take a look at the Emacs FAQ""" start="00:01:01.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and then go to the what's new about""" start="00:01:05.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or what's different about Emacs 30 node.""" start="00:01:08.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Next to these two official options,""" start="00:01:12.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I also have a page on Emacs Wiki""" start="00:01:14.733" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""called EmacsThirtyHighlights,""" start="00:01:18.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""highlighting some of the interesting features""" start="00:01:21.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""with some context and suggestions on how to try them out.""" start="00:01:24.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is more of a collaborative effort.""" start="00:01:28.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So if you see this and think something is missing,""" start="00:01:30.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""feel free to add it.""" start="00:01:32.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So without further ado,""" start="00:01:34.533" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""let's begin taking a look at new features in Emacs 30.""" start="00:01:36.866" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""Android""" start="00:01:41.800" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""The biggest one, and the one I want to mention first,""" start="00:01:41.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""is Android support, native Android support.""" start="00:01:44.733" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""As you can see here, Emacs has been ported""" start="00:01:49.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to the Android operating system.""" start="00:01:51.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""What this means is that from Emacs 30 onwards,""" start="00:01:53.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""you can build Android to target Android devices natively""" start="00:01:56.533" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and using a graphical interface.""" start="00:02:01.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""While it has been possible to run Emacs""" start="00:02:06.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""inside of terminal emulators on Android for a while,""" start="00:02:08.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""this actually means that you can use Emacs""" start="00:02:11.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""on an Android device, a phone or a tablet,""" start="00:02:13.933" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and have all the usual advantages from GUI Emacs,""" start="00:02:17.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""such as the ability to bind all commands""" start="00:02:20.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""without having to worry about--""" start="00:02:23.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""all keys without having to worry""" start="00:02:25.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""about terminal compatibility issues,""" start="00:02:27.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""displaying images and multiple fonts""" start="00:02:29.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""on the same display of different sizes.""" start="00:02:32.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I should have a recording""" start="00:02:35.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""of that somewhere here--here we are--""" start="00:02:37.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which I made earlier on my phone,""" start="00:02:42.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""because I'm recording this on a laptop--""" start="00:02:44.133" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""where we can see how touch interaction works""" start="00:02:47.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""on an Android phone. I can switch between buffers.""" start="00:02:50.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Here I've connected an external keyboard,""" start="00:02:53.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""opening the Emacs website.""" start="00:02:56.133" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""We have images that we can interact with.""" start="00:02:57.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""We could resize them if we wanted to""" start="00:03:02.560" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""with the image resizing commands.""" start="00:03:04.320" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Pinch-to-zoom works, so it""" start="00:03:07.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""does realize what touchscreen interactions are.""" start="00:03:10.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""With an external mouse, and for example,""" start="00:03:12.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""enabling context menu mode,""" start="00:03:15.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I can even pop up little interaction windows,""" start="00:03:17.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which one you would usually also know from GUI Emacs.""" start="00:03:23.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""TUI Emacs actually also supports them since a while now.""" start="00:03:28.140" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""And in this case, I'm demonstrating""" start="00:03:33.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""how even the touchscreen events""" start="00:03:34.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""can be inspected using the usual help system,""" start="00:03:36.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and how context-mode notices""" start="00:03:39.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""where we are and allows me to, for example,""" start="00:03:43.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""evaluate this specific region,""" start="00:03:45.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which I've highlighted down there,""" start="00:03:47.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""binding a command to touch-screen-scroll. Yeah.""" start="00:03:49.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""One should note that these additions,""" start="00:03:58.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""for example touchscreen interaction,""" start="00:04:00.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""are not specific to Android,""" start="00:04:02.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but they also are supported in other operating systems,""" start="00:04:03.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""such as Wayland and Xorg, which are not operating systems,""" start="00:04:07.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and Windows, insofar as they have touchscreen,""" start="00:04:12.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and devices have touchscreen support.""" start="00:04:15.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""One should mention, or I want to mention,""" start="00:04:18.420" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""that the main developer behind this feature, Po Lu,""" start="00:04:21.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""should be complimented for the additional effort he put""" start="00:04:24.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""into making sure that Emacs for Android""" start="00:04:27.533" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""can be built using only a free software toolchain,""" start="00:04:31.020" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which is certainly not something one has come to expect""" start="00:04:34.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""from working on Android applications,""" start="00:04:36.360" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""as usually you have to agree to some terms and conditions""" start="00:04:40.733" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""for Google-specific software.""" start="00:04:43.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Final note is that if you try and look for this online,""" start="00:04:46.520" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""there are APKs you can find,""" start="00:04:49.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but some of them might be outdated.""" start="00:04:52.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""To the best of my knowledge, Po Lu has...""" start="00:04:54.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Emacs 30 Android Sourceforge...""" start="00:04:59.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""He has set up some system where here in Sourceforge,""" start="00:05:03.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""there are regular and updated""" start="00:05:06.533" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""APK files which you can download""" start="00:05:12.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to avoid having to build it yourself,""" start="00:05:14.533" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""testing out the newest version""" start="00:05:16.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""in case there are some bugs which you'd like to report.""" start="00:05:18.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Which-key is a package which has now been moved""" start="00:05:24.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""from ELPA to the core.""" start="00:05:33.133" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If you haven't heard of which-key before, the idea is,""" start="00:05:35.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or the general pitch is that which-key""" start="00:05:39.180" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""is a additional documentation interface for Emacs""" start="00:05:41.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""for displaying various keys which you could input,""" start="00:05:45.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or various keys and key maps""" start="00:05:49.733" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""that have been partially inputted.""" start="00:05:53.440" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""A better way to demonstrate this""" start="00:05:54.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or to explain this is just to show it.""" start="00:05:57.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If we enable the which-key mode--it's a global minor mode--""" start="00:05:59.333" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then I can press, for example, C-x,""" start="00:06:03.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which is a prefix for the C-x keymap.""" start="00:06:06.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Then down here in the buffer, in this window down here,""" start="00:06:08.733" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""we see various commands which we could invoke""" start="00:06:12.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and the keys to invoke them with.""" start="00:06:15.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""For example, if I wanted to say C-x i for insert-file,""" start="00:06:17.933" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then I just have to press i to highlight it once again.""" start="00:06:23.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It should be down here. Pressing i without having to repeat""" start="00:06:27.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""the entire key code again,""" start="00:06:32.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""the partial key code again, just works.""" start="00:06:34.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is different from the feature which Emacs has already,""" start="00:06:37.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which is if you have input the partial keychord,""" start="00:06:41.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""you can press C-h""" start="00:06:45.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and then a help buffer pops up with a listing""" start="00:06:47.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""of all keybindings that start with C-x.""" start="00:06:51.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""The information is the same, the presentation is different,""" start="00:06:54.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""because now if I wanted to do C-x i,""" start="00:06:56.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I have to repeat the entire keychord again.""" start="00:06:59.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So it's a matter of personal preference, which you prefer.""" start="00:07:03.340" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is more of a traditional static approach""" start="00:07:09.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""because I get a help buffer which I can search""" start="00:07:10.960" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""using usual key commands,""" start="00:07:19.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""while which-key is more of a transient and modern.""" start="00:07:20.933" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Some might prefer that approach""" start="00:07:28.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to solving the same problem.""" start="00:07:31.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Also, don't forget to check out the customization group""" start="00:07:35.720" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""for which-key which has a number of options""" start="00:07:39.133" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which you might or might not be interested in.""" start="00:07:41.966" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""EditorConfig""" start="00:07:45.720" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""Next up, Emacs 30 has built-in EditorConfig support.""" start="00:07:45.720" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If you have not heard of EditorConfig before,""" start="00:07:50.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I believe I've linked to it down here somewhere.""" start="00:07:53.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Ah, there it is, EditorConfig.""" start="00:07:56.640" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is a file format used to specify""" start="00:08:00.120" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""common formatting rules in an editor-agnostic way.""" start="00:08:09.420" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""You might compare it to .dir-locals.el files,""" start="00:08:12.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which is a sort of an s-expression""" start="00:08:16.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""for setting file-local variables in Emacs.""" start="00:08:19.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Of course, this is restricted to the common subset""" start="00:08:22.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""of what all editors should understand.""" start="00:08:27.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""For example, indentation styles,""" start="00:08:29.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""whether you prefer tabs or spaces,""" start="00:08:31.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""tab width, file encoding, and so on.""" start="00:08:35.120" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So it's nothing too advanced, but it's something...""" start="00:08:38.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It is a file format which one sees popping up more""" start="00:08:43.920" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and more often in lots of projects""" start="00:08:48.533" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which want to enforce a consistent indentation style""" start="00:08:50.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or formatting rules for all editors in a project.""" start="00:08:53.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Having this built in is certainly useful in Emacs.""" start="00:08:56.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Though one should note that it's not enabled by default.""" start="00:09:00.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""You still have to enable the global minor mode,""" start="00:09:03.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which is simply turning on this one option.""" start="00:09:10.940" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Shouldn't be more than that,""" start="00:09:14.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and then Emacs will respect the rules.""" start="00:09:15.533" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If it finds a .editorconfig file in the project directory,""" start="00:09:18.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then it will respect those rules""" start="00:09:23.641" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""without having to do anything else.""" start="00:09:25.321" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""use-package integration with package-vc""" start="00:09:27.310" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""Next up, use-package integration with package-vc.""" start="00:09:27.310" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""For those not familiar with either of the two,""" start="00:09:33.568" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or at least one of the two,""" start="00:09:36.534" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""use-package is a popular configuration macro.""" start="00:09:37.534" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""What it does is it allows""" start="00:09:40.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""users to declaratively specify packages""" start="00:09:42.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""they would like to have installed and configured""" start="00:09:46.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""in their configuration file,""" start="00:09:48.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""so that, for example, if you copy your init.el""" start="00:09:51.660" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""from one system to another,""" start="00:09:54.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""it could bootstrap the entire configuration,""" start="00:09:55.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""downloading all the packages you want""" start="00:09:58.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""without having to manually do this""" start="00:10:00.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""on every system you'd like to use.""" start="00:10:02.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This allows configurations""" start="00:10:05.140" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to be self-encapsulated and portable.""" start="00:10:07.633" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""package-vc is an extension of package.el,""" start="00:10:10.860" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which allows installing packages from an alternative.""" start="00:10:15.060" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Instead of using the standard way to install packages,""" start="00:10:19.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which is just download tarball and unpack it,""" start="00:10:22.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""byte compile, and so on,""" start="00:10:26.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""it will fetch the files for a package""" start="00:10:27.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""directly from the source code repository""" start="00:10:32.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and initialize it in such a way""" start="00:10:35.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""that package.el can work with it.""" start="00:10:37.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So it's just a front-end for installing packages.""" start="00:10:38.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Even though these two were added to Emacs 29,""" start="00:10:44.240" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""we didn't have the time to work on the""" start="00:10:46.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""use-package integration of package-vc into use-package,""" start="00:10:48.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which has been changed now.""" start="00:10:52.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""What we have with Emacs 30 is that""" start="00:10:54.633" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""there is a :vc keyword for use-package""" start="00:11:00.140" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""with which we can instruct use-package""" start="00:11:02.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to not download a package using tarball,""" start="00:11:05.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but instead to fetch the source code""" start="00:11:10.240" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""from a source code repository.""" start="00:11:12.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is useful if you, for example,""" start="00:11:13.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""have packages which you yourself work on""" start="00:11:15.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and know that you always want to have""" start="00:11:18.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""the development version of the package""" start="00:11:19.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""where you can directly commit changes you've made""" start="00:11:21.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to the repository and push them upstream.""" start="00:11:26.820" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Or, if you know that you want to contribute to a package,""" start="00:11:29.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""you can use package-vc to download the source code,""" start="00:11:32.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""have all the version control information,""" start="00:11:35.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""prepare a patch and send it upstream.""" start="00:11:37.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""In these examples here,""" start="00:11:41.740" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""the first example Lisp instructs package-vc""" start="00:11:43.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to download the source code from a URL.""" start="00:11:49.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So this is a git URL where it will download""" start="00:11:52.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""the source code from, and in this case,""" start="00:11:55.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""choose the newest checkout of the source code,""" start="00:11:57.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""not the latest release. Down here, we have another example.""" start="00:12:00.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I prefer to consider the following example here.""" start="00:12:04.940" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If we just had written this,""" start="00:12:08.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then package-vc would use the metadata""" start="00:12:10.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which an ELPA server provides""" start="00:12:13.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to fetch the URL from the official repository of,""" start="00:12:15.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""in this case, BBDB, without having to...""" start="00:12:20.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It would be more or less the same like this up here,""" start="00:12:22.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""with the simple difference that package-vc integration""" start="00:12:27.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""into use-package doesn't check out the latest commit,""" start="00:12:32.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but the latest release,""" start="00:12:36.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""just to keep configurations more deterministic by default.""" start="00:12:37.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Of course, if you prefer to use latest commit,""" start="00:12:44.980" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""you can use a package-vc install command""" start="00:12:47.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or just update the package manually yourself,""" start="00:12:52.180" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which you can use using package-vc-upgrade.""" start="00:12:54.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Next, I'd like to focus on a few features""" start="00:13:01.780" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which one might not necessarily realize directly,""" start="00:13:04.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but will hopefully improve your experience with Emacs.""" start="00:13:07.033" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""JSON""" start="00:13:11.560" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""First up in this list is a new JSON parser.""" start="00:13:11.560" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Let's maybe show the source code for that one:""" start="00:13:15.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""not json.el, json.c. The history of JSON parsing in Emacs""" start="00:13:21.960" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""started with Emacs 23 with the addition of json.el.""" start="00:13:39.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This was the file which we had just opened a moment ago.""" start="00:13:43.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is a JSON parser in Emacs Lisp.""" start="00:13:46.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It's fine, it does the job, but it can get slow""" start="00:13:50.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""if we have a situation like where""" start="00:13:53.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Eglot uses a LSP server to communicate with""" start="00:13:55.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and the LSP server can get a bit chatty,""" start="00:14:00.320" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""sending a lot of JSON data,""" start="00:14:03.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which all has to be parsed and garbage collected,""" start="00:14:05.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which can slow down Emacs a bit.""" start="00:14:08.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""The situation was improved upon in Emacs 29""" start="00:14:09.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""when JSON parsing was added to the core.""" start="00:14:13.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This was the json.c file, which we see on this side,""" start="00:14:18.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""the old version of the json.c file,""" start="00:14:21.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which employed the Jansson library (it's the C library)""" start="00:14:22.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""for parsing and accelerating JSON parsing in Emacs.""" start="00:14:26.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This was good enough,""" start="00:14:31.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or it certainly improved the situation""" start="00:14:34.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""for a lot of LSP clients.""" start="00:14:36.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""But in Emacs 30, the situation has been improved once more""" start="00:14:38.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""with the addition of a JSON parser directly in Emacs.""" start="00:14:44.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So instead of using an external library,""" start="00:14:49.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""there's a custom JSON parser written in C in the Emacs core,""" start="00:14:53.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which directly generates Elisp objects.""" start="00:14:57.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""The advantage to this approach""" start="00:15:01.540" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""compared to the Jansson approach""" start="00:15:05.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""is that there's no intermediate format""" start="00:15:06.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which has to be allocated""" start="00:15:07.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and memory managed and freed again,""" start="00:15:09.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which of course incurs an additional performance overhead.""" start="00:15:11.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Next to this, there's also a custom serializer""" start="00:15:19.540" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""for JSON contents translating a JSON object into a string.""" start="00:15:22.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""... The consequence of this is that""" start="00:15:29.240" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""there is absolutely no dependency on Jansson anymore.""" start="00:15:30.641" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This in turn means that now all Emacs users""" start="00:15:35.520" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""from Emacs 30 onwards""" start="00:15:38.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""can take advantage of this new JSON parser""" start="00:15:39.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and don't have to worry about whether""" start="00:15:42.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or not they have Jansson, this JSON parsing library,""" start="00:15:44.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""installed on their system or not when they want""" start="00:15:47.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to take advantage of this accelerated JSON parsing.""" start="00:15:50.466" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""Native compilation""" start="00:15:56.680" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""Next up, another behind-the-scenes feature""" start="00:15:56.680" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""is that if you build Emacs on your own from source,""" start="00:16:00.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""you might know that if you wanted""" start="00:16:06.407" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to use native compilation,""" start="00:16:07.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""so the translation of Elisp bytecodes""" start="00:16:09.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to whatever the native assembly""" start="00:16:12.380" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or native instruction set is on your system,""" start="00:16:15.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""you have to specify with native compilation.""" start="00:16:19.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""when invoking the configure script,""" start="00:16:24.340" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""otherwise it would not have been enabled at all.""" start="00:16:25.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""With Emacs 30, this step is not necessary anymore.""" start="00:16:28.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""The configure script will automatically check""" start="00:16:32.480" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""if you have the libgccjit library installed on your system,""" start="00:16:36.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and if that is so,""" start="00:16:41.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then native compilation will be enabled by default.""" start="00:16:42.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""In other words, if you have an issue with native compilation""" start="00:16:45.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or prefer not to use it for whatever reason,""" start="00:16:49.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""you now have to type --without-native-compilation""" start="00:16:52.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""when compiling Emacs to prevent this from happening.""" start="00:16:55.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""But native compilation was added in Emacs 28""" start="00:16:58.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and has proven to be a very stable""" start="00:17:02.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and useful feature for most people,""" start="00:17:04.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""so there's probably no reason to do this""" start="00:17:06.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and you can just invoke the configure script""" start="00:17:09.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""with one argument less. Right, and I'd like to finish up""" start="00:17:11.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""with a few smaller features, a few smaller highlights.""" start="00:17:16.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Maybe we can go back to the listing here. Here we have it.""" start="00:17:19.500" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""Tree-sitter""" start="00:17:29.640" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""There are a few new major modes""" start="00:17:29.640" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""based on the tree-sitter library.""" start="00:17:32.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""tree-sitter is this parser library""" start="00:17:34.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which has been integrated into Emacs 29.""" start="00:17:37.940" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It allows the integration""" start="00:17:39.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""of external, specialized, and quick parsers into Emacs,""" start="00:17:44.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which improve stuff like syntax highlighting, indentation,""" start="00:17:48.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""structural navigation, imenu support,""" start="00:17:52.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""by simply having a better understanding of, for example,""" start="00:17:55.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""a HTML file, or a Lua file, a PHP file,""" start="00:18:01.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""than what people usually implement""" start="00:18:03.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""using regular expressions in traditional major modes.""" start="00:18:06.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So, a few new major modes which you can try out here.""" start="00:18:10.400" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""Completion preview mode""" start="00:18:16.780" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""Another interesting feature is the completion-preview-mode.""" start="00:18:16.780" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""We can maybe try it out here in the scratch buffer.""" start="00:18:20.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If I enable completion-preview-mode...""" start="00:18:23.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is a non-global minor mode,""" start="00:18:28.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which will display completion options inline using overlays.""" start="00:18:32.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""For example, if I start typing a longer symbol like define,""" start="00:18:38.633" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""now we have a derived mode. It suggests me to...""" start="00:18:43.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I can just press TAB and then it completes the option here,""" start="00:18:48.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but it didn't actually...""" start="00:18:51.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It's not actually modifying the buffer, it's not pressing,""" start="00:18:51.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""these are just overlays,""" start="00:18:55.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""so if I move around, it gets deleted.""" start="00:18:57.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It wouldn't get saved if I were to save the buffer.""" start="00:18:59.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""The same also should work in a shell buffer.""" start="00:19:02.620" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If I enable completion preview mode here and start...""" start="00:19:05.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""In this case, I'm using the bash completion package,""" start="00:19:08.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which provides additional completion information.""" start="00:19:12.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is not only limited to programming systems,""" start="00:19:15.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but anywhere where you have completion at point in Emacs.""" start="00:19:17.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I can start typing here, ignore, and put ignore-backups,""" start="00:19:22.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and it hints to the options which I have""" start="00:19:26.160" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and allows me to complete them quickly.""" start="00:19:30.033" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""package-isolate""" start="00:19:34.233" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""Another small feature is the package-isolate command.""" start="00:19:34.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""What this does is it will start""" start="00:19:38.000" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or it will prompt me for packages""" start="00:19:40.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I have installed in my system""" start="00:19:42.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and will start an isolated""" start="00:19:44.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or like &quot;emacs -Q&quot;-ish instance of emacs""" start="00:19:46.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""with only these packages installed.""" start="00:19:51.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So for example, if I said I want slime and I want diff-hl,""" start="00:19:53.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then this is a new Emacs window.""" start="00:20:00.440" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It's unrelated to the one around.""" start="00:20:02.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It uses the same executable, of course,""" start="00:20:04.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but will not load your configuration file""" start="00:20:06.500" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or any other further customizations on your system.""" start="00:20:09.940" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""All it does, it will ensure""" start="00:20:13.680" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""that these packages, which are listed here,""" start="00:20:15.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""so in our case SLIME and dependencies of SLIME and diff-hl,""" start="00:20:17.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""in the system""" start="00:20:24.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""so that I could, for example, as you can see here,""" start="00:20:25.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""diff-hl-mode works.""" start="00:20:29.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Okay, this is not a version-controlled file.""" start="00:20:32.140" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Maybe if we take a look at, have I enabled diff-hl-mode?""" start="00:20:34.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It's enabled in this case. What diff-hl-mode does""" start="00:20:41.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""is it displays these version control changes""" start="00:20:44.633" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""in the fringe of a buffer.""" start="00:20:48.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""And even though this is a uncustomized version of Emacs,""" start="00:20:49.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or an uncustomized instance of Emacs,""" start="00:20:54.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""it was easy for me to load this one package,""" start="00:20:56.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""or these two packages and all the dependencies necessary.""" start="00:20:59.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""As you can imagine, the main purpose for this""" start="00:21:02.066" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""is to make debugging issues easier.""" start="00:21:05.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If you want to report about an issue""" start="00:21:07.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""you have with a package. And if I close this, it's closed""" start="00:21:10.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and everything's thrown away.""" start="00:21:14.900" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""Reindenting""" start="00:21:16.920" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""Last up, a nice feature I think""" start="00:21:16.920" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""a lot of people will appreciate is,""" start="00:21:19.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""if you are familiar with... Let's open a text buffer.""" start="00:21:20.966" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""The M-q key is traditionally bound to fill-paragraph.""" start="00:21:24.300" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""What this means is that...""" start="00:21:30.280" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Let's, for example, copy this text from here""" start="00:21:32.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and squash it all into one line. If I press M-q here,""" start="00:21:35.033" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then the lines will be broken""" start="00:21:40.400" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""according to the fill column indicator up here.""" start="00:21:42.720" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""This is the traditional usage of M-q,""" start="00:21:49.880" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and it still works in text-mode buffers,""" start="00:21:52.633" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""but in prog-mode buffers--""" start="00:21:54.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""so any major mode inheriting prog-mode--""" start="00:21:55.860" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""M-q will now by default be bound""" start="00:22:00.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to prog-fill-reindent-defun. To summarize the point,""" start="00:22:02.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""if you are editing a string or a comment,""" start="00:22:09.780" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then the comment will be filled.""" start="00:22:13.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""But if you are outside of a comment or outside of a string,""" start="00:22:16.040" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then the defun or the top-level construct""" start="00:22:19.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""in the programming language will be re-indented.""" start="00:22:23.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Let's try that out with maybe some file I have open here.""" start="00:22:26.160" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If I'm in this... Let's choose some function,""" start="00:22:34.100" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""let's take this for example.""" start="00:22:38.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If we followed all of this again,""" start="00:22:40.766" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and I press M-q in on this paragraph,""" start="00:22:43.960" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then the paragraph gets re-indented.""" start="00:22:47.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""But if I'm down here and I choose to break the indentation""" start="00:22:49.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and then press M-q,""" start="00:22:55.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then as you see, it practically selected the defun""" start="00:22:58.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and re-indented everything""" start="00:23:02.366" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""without having me to move the point around in the buffer.""" start="00:23:03.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""So I think that's a really nice feature,""" start="00:23:06.960" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which a lot of people can appreciate.""" start="00:23:08.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""It's one of those niceties which comes from time to time.""" start="00:23:11.100" video="mainVideo-emacs30" id="subtitle"]]

[[!template new="1" text="""Wrapping up""" start="00:23:17.940" video="mainVideo-emacs30" id="subtitle"]]

[[!template text="""Right, so that was my overview""" start="00:23:17.940" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""of what's going to be new in Emacs 30.""" start="00:23:20.666" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""I hope that most people could take away""" start="00:23:22.633" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""something from this presentation""" start="00:23:24.433" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and have something to look forward""" start="00:23:25.580" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""to try out after upgrading.""" start="00:23:28.900" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""As mentioned initially, as of recording,""" start="00:23:31.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""this release has not been completed yet.""" start="00:23:33.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If this is still not the case""" start="00:23:36.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""when you're seeing this video,""" start="00:23:38.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""please consider downloading and building Emacs 30 yourself.""" start="00:23:40.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""If you have any issues, which is always the case,""" start="00:23:43.866" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""please report them to using report-emacs-bug.""" start="00:23:48.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""That will pop up a mail buffer,""" start="00:23:56.440" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and then you can describe your issue and send them out.""" start="00:23:57.908" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""All bug reports are valuable,""" start="00:23:59.633" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""even if they are false positives or duplicates--""" start="00:24:01.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""it doesn't matter--""" start="00:24:04.466" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""because when you take the time to submit a bug report,""" start="00:24:05.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which describes something that's specific to your setup,""" start="00:24:08.566" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which the developers might not have noticed or known about,""" start="00:24:12.266" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""then you are certainly helping out a lot of other people""" start="00:24:16.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which might run into the same issue in the future.""" start="00:24:19.166" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Especially with upgrades,""" start="00:24:21.800" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""it would be nice to figure out small problems""" start="00:24:23.233" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""which make upgrading difficult for some people.""" start="00:24:26.600" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""The ideal is, of course, to have no issues""" start="00:24:30.833" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""when upgrading from one version to another.""" start="00:24:34.700" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""Having said that, I thank you for your attention,""" start="00:24:37.200" video="mainVideo-emacs30" id="subtitle"]]
[[!template text="""and I'm saying goodbye.""" start="00:24:39.600" video="mainVideo-emacs30" id="subtitle"]]



Captioner: anush

Questions or comments? Please e-mail [emacsconf-org-private@gnu.org](mailto:emacsconf-org-private@gnu.org?subject=Comment%20for%20EmacsConf%202023%20emacs30%3A%20Emacs%2030%20Highlights)


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