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authorBhavin Gandhi <bhavin192@geeksocket.in>2021-02-17 22:40:45 +0530
committerBhavin Gandhi <bhavin192@geeksocket.in>2021-02-17 23:04:10 +0530
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tree42db5bd52ff4f3138b00f83bbe07bf2c3ea1ae0d /2020/subtitles/emacsconf-2020--34-extend-emacs-to-modern-gui-applications-with-eaf--matthew-zeng-autogen.vtt
parentc58d1cb8e0db5dd747b40a2998e1535ded2815bc (diff)
downloademacsconf-wiki-6dabfe18c294131bbdf7956c189347d4947d39e2.tar.xz
emacsconf-wiki-6dabfe18c294131bbdf7956c189347d4947d39e2.zip
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-WEBVTT
-
-00:00:03.600 --> 00:00:04.560
-hello
-
-00:00:04.560 --> 00:00:06.720
-hopefully everyone is staying safe and
-
-00:00:06.720 --> 00:00:08.000
-staying home
-
-00:00:08.000 --> 00:00:10.000
-I feel very grateful to live in a world
-
-00:00:10.000 --> 00:00:12.000
-today that technology and free software
-
-00:00:12.000 --> 00:00:13.759
-can be leveraged to connect people in
-
-00:00:13.759 --> 00:00:16.080
-such disconnected and difficult times
-
-00:00:16.080 --> 00:00:17.840
-and to have an online conference like
-
-00:00:17.840 --> 00:00:19.920
-this hopefully you've all
-
-00:00:19.920 --> 00:00:22.960
-enjoyed this year's Emacs con so far
-
-00:00:22.960 --> 00:00:24.720
-many thanks to all the people that made
-
-00:00:24.720 --> 00:00:26.880
-this possible
-
-00:00:26.880 --> 00:00:30.000
-anyways welcome to my talk extend Emacs
-
-00:00:30.000 --> 00:00:30.960
-to modern gui
-
-00:00:30.960 --> 00:00:34.079
-applications with eaf the imax
-
-00:00:34.079 --> 00:00:35.920
-application framework
-
-00:00:35.920 --> 00:00:38.320
-this will be my first ever talk so
-
-00:00:38.320 --> 00:00:39.840
-apologies for my
-
-00:00:39.840 --> 00:00:43.280
-inexperience let us begin
-
-00:00:43.280 --> 00:00:46.559
-about me my name is matthew zing you can
-
-00:00:46.559 --> 00:00:47.840
-also call me mt
-
-00:00:47.840 --> 00:00:50.640
-or mindu I'm a chinese canadian living
-
-00:00:50.640 --> 00:00:51.440
-in toronto
-
-00:00:51.440 --> 00:00:54.239
-ontario offline I'm an undergrad
-
-00:00:54.239 --> 00:00:56.079
-studying mathematics at the university
-
-00:00:56.079 --> 00:00:57.760
-of urudu
-
-00:00:57.760 --> 00:01:00.480
-online I mean one of the admins of the
-
-00:01:00.480 --> 00:01:03.039
-Emacs china
-
-00:01:03.039 --> 00:01:06.320
-the largest Emacs forum in china so
-
-00:01:06.320 --> 00:01:08.080
-to all chinese listen to my talk right
-
-00:01:08.080 --> 00:01:10.960
-now feel free to check it out
-
-00:01:10.960 --> 00:01:14.320
-and this is a link to my github profile
-
-00:01:14.320 --> 00:01:17.280
-to my projects I'm involving one's me
-
-00:01:17.280 --> 00:01:18.240
-max which is
-
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-I'm the author of a user-friendly
-
-00:01:20.159 --> 00:01:21.840
-full-featured image configuration
-
-00:01:21.840 --> 00:01:22.799
-distribution
-
-00:01:22.799 --> 00:01:25.040
-it is what I'm using right now as well
-
-00:01:25.040 --> 00:01:26.880
-as the imax application filter
-
-00:01:26.880 --> 00:01:29.119
-which I help to maintain along with the
-
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-other other
-
-00:01:30.400 --> 00:01:33.040
-lazy cat which of course is today's
-
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-topic
-
-00:01:35.759 --> 00:01:38.720
-so as you might all might have already
-
-00:01:38.720 --> 00:01:40.960
-noticed I'm currently using Emacs
-
-00:01:40.960 --> 00:01:43.600
-and oh and opening navigating closing
-
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-all these websites that are rendered
-
-00:01:45.360 --> 00:01:46.159
-properly
-
-00:01:46.159 --> 00:01:49.200
-or within Emacs it's all thanks to the
-
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-ef project
-
-00:01:51.840 --> 00:01:54.000
-so we're living in a society that's
-
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-heavily dependent on the internet
-
-00:01:55.920 --> 00:01:59.520
-and multimedia it is unavoidable to run
-
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-to some occasion that you need to
-
-00:02:01.200 --> 00:02:02.880
-open a fancy website that uses
-
-00:02:02.880 --> 00:02:04.799
-javascript and css
-
-00:02:04.799 --> 00:02:08.239
-or you need to watch some videos however
-
-00:02:08.239 --> 00:02:11.120
-due to the nature and history of Emacs
-
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-it cannot
-
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-render all these modern graphics
-
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-effectively and efficiently
-
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-Emacs is solely a text-based editing
-
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-environment
-
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-and I argue that this is not a bad thing
-
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-in fact it is one of the reasons that me
-
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-and I believe many of you as well
-
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-are attracted to Emacs in the first
-
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-place
-
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-unfortunately this results in us having
-
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-to open a dedicated web browser to
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-browse the internet
-
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-open a dedicated video player to watch
-
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-some videos or a pdf render to read some
-
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-documents
-
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-so far ems cannot do all these tasks on
-
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-its own
-
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-but can only be achieved using other
-
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-external applications
-
-00:02:51.519 --> 00:02:55.840
-so the other the author manatee lazy cat
-
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-or lazy cat in short didn't want to use
-
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-all these external applications
-
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-he wanted to have an uninterrupted e-max
-
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-experience
-
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-he wanted to truly live in e-max
-
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-however it would be a lot of work to
-
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-build this
-
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-modern application from scratch there's
-
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-simply no time or research to do that
-
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-so lazy car without utilizing existing
-
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-applications
-
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-and to try to make it collaborate with
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-Emacs there are many solutions available
-
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-one of it
-
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-is the e-max x windows manager and I'm
-
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-sure a lot of you already know that
-
-00:03:30.159 --> 00:03:33.360
-the exwm however it didn't work for him
-
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-because although ux doubling opens the
-
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-door to use other applications within
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-Emacs
-
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-it as a fine window manager cannot
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-modify
-
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-customize or extend other software from
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-Emacs
-
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-for example it cannot modify the
-
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-behavior when you press a key in
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-chromium or
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-pdf viewer therefore it cannot utilize
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-the rich emax ecosystem that's been
-
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-growing for almost 40 years
-
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-on the other hand in the ef browser so
-
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-if you mx ef open
-
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-browser with history you can see
-
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-on the lower half of my screen a list of
-
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-histories sorted by my personal
-
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-most visited sites and you can search
-
-00:04:14.560 --> 00:04:16.560
-for a site that you've been
-
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-into or search for some keyword and in a
-
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-search engine
-
-00:04:21.840 --> 00:04:24.240
-so this is all achieved by utilizing the
-
-00:04:24.240 --> 00:04:25.919
-popular completion framework in the
-
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-Emacs ecosystem
-
-00:04:29.280 --> 00:04:31.120
-so this car decided to develop a
-
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-solution of its own in 2018
-
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-namely the eaf project so I joined the
-
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-development last year
-
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-2019 ef is
-
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-a highly customizable and extensible
-
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-reapplication framework that extends
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-imax to graphical capabilities using pi
-
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-qd5 and it is not a window manager
-
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-alright so in the readme you can see a
-
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-list of gifs
-
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-showcasing all the available ef
-
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-applications
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-a browser a markdown premier a video
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-player
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-a pdf viewer and more today I don't have
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-enough time to demonstrate each one of
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-them
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-but I will select a couple applications
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-to show you
-
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-so since we are already using ef browser
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-we'll start with this besides using the
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-classic control n control p
-
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-you can also use the vim style xjkl to
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-move up or down
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-also meta shift comma or g to the
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-beginning of page
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-when that shift period or capital g to
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-the end of page
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-limiting and surfing keys linear and
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-surfing keys are popular keyboard-based
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-browsing techniques in chrome
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-and they've imported here as well you
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-can press f to toggle markers pointing
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-to
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-all the links in the current page say I
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-want to visit the wiki
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-which comes very very handy when you
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-want to configure ef to your liking
-
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-so you see the marker on top of wiki is
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-dd
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-press dd and you enter and now
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-you will navigate it to this link so you
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-don't need to use your mouse at all
-
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-so a full list of key bindings can be
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-found when you
-
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-control hm just as any other max major
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-mode
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-so you don't have to remember everything
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-all the key bindings I said to you
-
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-so this is a global binding application
-
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-to every other ef application as well
-
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-so you can find it under the week or or
-
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-you can find it under the wiki in the
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-key binding
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-section so press f again and use
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-ns press enter now you're in the key
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-binding web page
-
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-you can see all of the key buttons
-
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-available in every
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-es application and you can try them out
-
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-and you can customize your key bindings
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-using ef
-
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-bank key you can customize control n as
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-in the web page to
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-to scroll up in the ef pdf viewer or you
-
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-can unbind
-
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-an existing binding using using yet bank
-
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-key
-
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-binder to new so it doesn't bind to
-
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-anything
-
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-okay so here comes the important part
-
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-if you want to customize ef you should
-
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-visit the customization page in the wiki
-
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-so now I press meta b to go back in
-
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-history and
-
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-go to the customization package press f
-
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-press a d
-
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-enter and now we're in the customization
-
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-page
-
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-so the first customization option you
-
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-see is dark mode
-
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-let's say if you want to turn on the doc
-
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-mode for ef browser
-
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-and you don't want to use your mouse to
-
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-do all this stuff
-
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-you press c and you can select
-
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-c to toggle the correct browsing you can
-
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-see a lot of markers available
-
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-pop um again but they're not they're not
-
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-on top of links but instead of
-
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-paragraphs
-
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-you select the paragraph or your choice
-
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-in this case you want
-
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-ls which comes here
-
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-and then you just you just move the
-
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-cursor like what you always do
-
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-in Emacs and now you select everything
-
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-and use meta w to
-
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-excuse me metadata to copy the taste the
-
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-text
-
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-now we made a shift column to evaluate
-
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-what we just copied
-
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-and set that to true and
-
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-press r or f5 to refresh the page
-
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-voila we have the dark mode enabled
-
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-so there are well let's take a toggle
-
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-back off for now
-
-00:08:46.160 --> 00:08:49.360
-now we made our shift column again
-
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-and we find the the one we just used and
-
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-change it back to false
-
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-and refresh the page back in the light
-
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-mode
-
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-so there are many other customization
-
-00:09:02.160 --> 00:09:03.680
-options available you can either
-
-00:09:03.680 --> 00:09:05.920
-evaluate like what we just did or add it
-
-00:09:05.920 --> 00:09:08.000
-to your Emacs configuration file
-
-00:09:08.000 --> 00:09:11.680
-so in this wiki you can have you can
-
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-you can make the ef browser to to
-
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-continue where you left off
-
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-similar to the chromium setting
-
-00:09:20.160 --> 00:09:22.800
-and you can make yes the default browser
-
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-Emacs by
-
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-aliasing aliasing browse web to your
-
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-open browser
-
-00:09:27.680 --> 00:09:30.399
-or or set the browse url browser
-
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-function to
-
-00:09:31.200 --> 00:09:33.519
-open browser there's just some tricks
-
-00:09:33.519 --> 00:09:34.480
-and there are also
-
-00:09:34.480 --> 00:09:37.920
-uh an experimental app blocker currently
-
-00:09:37.920 --> 00:09:41.680
-take in place and so therefore it can
-
-00:09:41.680 --> 00:09:44.720
-block some elements but not all so
-
-00:09:44.720 --> 00:09:47.279
-we we really encourage people to help us
-
-00:09:47.279 --> 00:09:48.240
-test out and
-
-00:09:48.240 --> 00:09:51.440
-add more conditions in
-
-00:09:51.440 --> 00:09:54.560
-so you can so the ef browser is able to
-
-00:09:54.560 --> 00:09:55.760
-download
-
-00:09:55.760 --> 00:09:57.680
-any files from the internet and it will
-
-00:09:57.680 --> 00:09:59.920
-be downloaded using
-
-00:09:59.920 --> 00:10:04.000
-a area too and
-
-00:10:04.000 --> 00:10:06.079
-you can also customize the ef browser
-
-00:10:06.079 --> 00:10:07.200
-download path
-
-00:10:07.200 --> 00:10:11.120
-using ef set so it's a function that we
-
-00:10:11.120 --> 00:10:14.399
-defined similar to set the normal set we
-
-00:10:14.399 --> 00:10:15.040
-know
-
-00:10:15.040 --> 00:10:16.480
-so by default the download file is
-
-00:10:16.480 --> 00:10:18.160
-stored in your home directory slash
-
-00:10:18.160 --> 00:10:19.600
-downloads
-
-00:10:19.600 --> 00:10:20.800
-and you can change that whenever you
-
-00:10:20.800 --> 00:10:22.720
-want you can also disable
-
-00:10:22.720 --> 00:10:26.079
-saving browsing history so remember
-
-00:10:26.079 --> 00:10:28.959
-when I press when I use mx you have open
-
-00:10:28.959 --> 00:10:30.480
-browser's history I see all the
-
-00:10:30.480 --> 00:10:32.079
-histories here but if you want more
-
-00:10:32.079 --> 00:10:33.680
-privacy you don't want that to be
-
-00:10:33.680 --> 00:10:35.360
-available at all you can turn it off
-
-00:10:35.360 --> 00:10:36.560
-easily with ef
-
-00:10:36.560 --> 00:10:38.720
-set queue and set that remember history
-
-00:10:38.720 --> 00:10:40.640
-to false
-
-00:10:40.640 --> 00:10:42.399
-you can also say your default search
-
-00:10:42.399 --> 00:10:43.839
-engine so
-
-00:10:43.839 --> 00:10:47.200
-so right now we have google although
-
-00:10:47.200 --> 00:10:50.480
-not not really good but google and also
-
-00:10:50.480 --> 00:10:53.600
-go which is a better search engine
-
-00:10:53.600 --> 00:10:57.360
-well uh yeah ethically better search
-
-00:10:57.360 --> 00:10:59.360
-engine
-
-00:10:59.360 --> 00:11:02.560
-so you can also configure
-
-00:11:02.560 --> 00:11:05.040
-the zoom so the default zoom of your
-
-00:11:05.040 --> 00:11:07.600
-browser is 1.0 so you can convert
-
-00:11:07.600 --> 00:11:10.000
-convert 3000 to 1.25 so you can so when
-
-00:11:10.000 --> 00:11:11.920
-you open any web page about it will be
-
-00:11:11.920 --> 00:11:14.079
-zoomed
-
-00:11:14.079 --> 00:11:17.360
-by default uh you can
-
-00:11:17.360 --> 00:11:20.399
-also disable javascript although I
-
-00:11:20.399 --> 00:11:22.240
-personally don't really suggest you to
-
-00:11:22.240 --> 00:11:23.440
-do because it will
-
-00:11:23.440 --> 00:11:26.240
-basically break a lot of our features
-
-00:11:26.240 --> 00:11:28.480
-because a lot of the browser browser
-
-00:11:28.480 --> 00:11:29.519
-related features
-
-00:11:29.519 --> 00:11:33.760
-must be implemented using javascript
-
-00:11:33.760 --> 00:11:35.440
-but yeah you can do it if you really
-
-00:11:35.440 --> 00:11:37.920
-want to and there also some
-
-00:11:37.920 --> 00:11:41.519
-customization on ef camera
-
-00:11:41.519 --> 00:11:47.760
-you can do as well yeah
-
-00:11:47.760 --> 00:11:52.399
-so uh let's move on to efpd viewer
-
-00:11:52.399 --> 00:11:56.079
-so now now let's open
-
-00:11:56.079 --> 00:11:59.440
-the pdf file using af
-
-00:11:59.440 --> 00:12:01.519
-so that's one something already here but
-
-00:12:01.519 --> 00:12:02.720
-let's open it here
-
-00:12:02.720 --> 00:12:06.079
-so yes open and
-
-00:12:06.079 --> 00:12:08.160
-select introduction to programming in
-
-00:12:08.160 --> 00:12:11.440
-e-max list
-
-00:12:11.440 --> 00:12:13.760
-uh I have it already open but it's okay
-
-00:12:13.760 --> 00:12:17.040
-so you have the file
-
-00:12:17.040 --> 00:12:20.160
-you have other files displayed
-
-00:12:20.160 --> 00:12:22.800
-you have all the pages display story yes
-
-00:12:22.800 --> 00:12:23.200
-and
-
-00:12:23.200 --> 00:12:27.040
-there are 273 pages in total but notice
-
-00:12:27.040 --> 00:12:29.279
-like how fast it is to browse
-
-00:12:29.279 --> 00:12:31.440
-all the pages it is blazingly fast
-
-00:12:31.440 --> 00:12:33.519
-that's all thanks to python and
-
-00:12:33.519 --> 00:12:37.040
-mupdf which you don't really get from
-
-00:12:37.040 --> 00:12:40.880
-Emacs list
-
-00:12:40.880 --> 00:12:43.600
-so let's say if I want to jump to page
-
-00:12:43.600 --> 00:12:44.079
-50
-
-00:12:44.079 --> 00:12:48.639
-we press p and enter 50.
-
-00:12:48.639 --> 00:12:53.279
-50 and here we are we are at page 50.
-
-00:12:53.279 --> 00:12:55.440
-you can look at the lower right to
-
-00:12:55.440 --> 00:12:58.880
-verify the page you're on
-
-00:12:58.880 --> 00:13:02.079
-and you can you can
-
-00:13:02.079 --> 00:13:05.120
-use I to toggle dark mode
-
-00:13:05.120 --> 00:13:07.839
-as expected and let's say you want to
-
-00:13:07.839 --> 00:13:08.240
-find
-
-00:13:08.240 --> 00:13:11.519
-table of contents so use ctrl s
-
-00:13:11.519 --> 00:13:15.680
-the image default binding for I search
-
-00:13:15.680 --> 00:13:19.360
-and search for a table of contents
-
-00:13:19.360 --> 00:13:21.680
-here we are it is highlighted for you
-
-00:13:21.680 --> 00:13:23.120
-and you can control s for more but
-
-00:13:23.120 --> 00:13:24.240
-there's only one or
-
-00:13:24.240 --> 00:13:27.200
-one match one other one you ctrl g to
-
-00:13:27.200 --> 00:13:28.800
-disable the highlight
-
-00:13:28.800 --> 00:13:30.880
-and you see a lot of options for you to
-
-00:13:30.880 --> 00:13:32.320
-go
-
-00:13:32.320 --> 00:13:35.040
-okay let's say if you want to go to the
-
-00:13:35.040 --> 00:13:36.240
-preface
-
-00:13:36.240 --> 00:13:39.519
-so that is you press f which which is
-
-00:13:39.519 --> 00:13:40.639
-also similar to
-
-00:13:40.639 --> 00:13:44.240
-eef browser you press f for vimeo
-
-00:13:44.240 --> 00:13:47.760
-and you see the marker now change to w
-
-00:13:47.760 --> 00:13:50.160
-press wn and then you can go to the
-
-00:13:50.160 --> 00:13:51.279
-prefix
-
-00:13:51.279 --> 00:13:54.320
-now we'll add a prefix
-
-00:13:54.320 --> 00:13:56.480
-so now you finish reading you want to
-
-00:13:56.480 --> 00:13:57.600
-save your progress
-
-00:13:57.600 --> 00:13:59.440
-no worries it is already saved for you
-
-00:13:59.440 --> 00:14:01.199
-by ef you can safely
-
-00:14:01.199 --> 00:14:04.240
-close the document using x
-
-00:14:04.240 --> 00:14:07.519
-and opening again af
-
-00:14:07.519 --> 00:14:10.560
-open and the file see your I
-
-00:14:10.560 --> 00:14:14.000
-preface again so you're right at where
-
-00:14:14.000 --> 00:14:16.560
-you let up left up
-
-00:14:16.560 --> 00:14:19.440
-you can also use mx org store link or
-
-00:14:19.440 --> 00:14:20.480
-ctrl cl
-
-00:14:20.480 --> 00:14:23.279
-which I prefer to if you want to save a
-
-00:14:23.279 --> 00:14:24.480
-particular page in
-
-00:14:24.480 --> 00:14:28.240
-a orgmo file so now
-
-00:14:28.240 --> 00:14:30.320
-I go back to my presentation now I don't
-
-00:14:30.320 --> 00:14:31.760
-need this anymore
-
-00:14:31.760 --> 00:14:35.600
-uh so you just control c control l
-
-00:14:35.600 --> 00:14:39.120
-or I think mx or insert link
-
-00:14:39.120 --> 00:14:41.040
-so you can find the file right here and
-
-00:14:41.040 --> 00:14:42.399
-you press enter
-
-00:14:42.399 --> 00:14:44.320
-and you press enter for the description
-
-00:14:44.320 --> 00:14:46.480
-again and now it's right here
-
-00:14:46.480 --> 00:14:50.720
-and ctrl c ctrl o to open it voila
-
-00:14:50.720 --> 00:14:54.000
-you're back right so
-
-00:14:54.000 --> 00:14:57.120
-let's now demonstrate the ef video
-
-00:14:57.120 --> 00:14:58.880
-player
-
-00:14:58.880 --> 00:15:02.639
-so mxef open if you use ef open whenever
-
-00:15:02.639 --> 00:15:03.279
-you want to
-
-00:15:03.279 --> 00:15:06.079
-open some file you use yet open browser
-
-00:15:06.079 --> 00:15:07.279
-if you want to use some
-
-00:15:07.279 --> 00:15:09.920
-actual application that's not really
-
-00:15:09.920 --> 00:15:11.199
-related to a file
-
-00:15:11.199 --> 00:15:14.800
-so you have open and select the video
-
-00:15:14.800 --> 00:15:15.600
-you want so
-
-00:15:15.600 --> 00:15:18.320
-video demo so I already have a video
-
-00:15:18.320 --> 00:15:19.040
-demo
-
-00:15:19.040 --> 00:15:21.839
-ready so because I recorded a video of
-
-00:15:21.839 --> 00:15:22.720
-the demo
-
-00:15:22.720 --> 00:15:26.000
-of the ef camera have a look so
-
-00:15:26.000 --> 00:15:28.079
-let's move to the beginning hello people
-
-00:15:28.079 --> 00:15:29.279
-from the future
-
-00:15:29.279 --> 00:15:32.399
-this is a demo of the ef video player
-
-00:15:32.399 --> 00:15:35.199
-that demos the ef camera feature
-
-00:15:35.199 --> 00:15:37.440
-so as you can see on the screen of me
-
-00:15:37.440 --> 00:15:38.639
-inside my camera
-
-00:15:38.639 --> 00:15:40.959
-and the screen is actually with all
-
-00:15:40.959 --> 00:15:42.880
-within Emacs
-
-00:15:42.880 --> 00:15:46.079
-right so and you can open this
-
-00:15:46.079 --> 00:15:49.839
-using here open camera
-
-00:15:49.839 --> 00:15:53.040
-and which I'm already into and you can
-
-00:15:53.040 --> 00:15:53.600
-press
-
-00:15:53.600 --> 00:15:56.720
-p to capture a photo
-
-00:15:56.720 --> 00:15:59.680
-so the photo is by default stored at
-
-00:15:59.680 --> 00:16:00.880
-your home slash
-
-00:16:00.880 --> 00:16:03.920
-downloads directory and you can modify
-
-00:16:03.920 --> 00:16:04.320
-it
-
-00:16:04.320 --> 00:16:07.839
-freely so if you go here and you can see
-
-00:16:07.839 --> 00:16:09.519
-the camera stored
-
-00:16:09.519 --> 00:16:13.759
-right here so why what I used here
-
-00:16:13.759 --> 00:16:16.240
-so you press space to pause what I used
-
-00:16:16.240 --> 00:16:17.120
-here is
-
-00:16:17.120 --> 00:16:20.320
-the year so ef open this entire so
-
-00:16:20.320 --> 00:16:22.959
-basically so in direct you you go to you
-
-00:16:22.959 --> 00:16:23.839
-you select
-
-00:16:23.839 --> 00:16:26.959
-the file that should be opened by
-
-00:16:26.959 --> 00:16:30.320
-eaf and I use that so it it detects that
-
-00:16:30.320 --> 00:16:32.720
-it wants to use the ef image viewer so
-
-00:16:32.720 --> 00:16:35.839
-I accidentally tested if image viewer
-
-00:16:35.839 --> 00:16:39.759
-before I noticed so that that that gives
-
-00:16:39.759 --> 00:16:40.240
-the
-
-00:16:40.240 --> 00:16:43.680
-image of the photo I just took
-
-00:16:43.680 --> 00:16:47.040
-using ef camera and as you can see you
-
-00:16:47.040 --> 00:16:47.360
-can
-
-00:16:47.360 --> 00:16:50.720
-I can use hl the bim button to navigate
-
-00:16:50.720 --> 00:16:51.600
-in the time
-
-00:16:51.600 --> 00:16:55.920
-timestamp in the video and I can use
-
-00:16:55.920 --> 00:17:02.320
-jk to to change the volumes of the video
-
-00:17:02.320 --> 00:17:05.520
-alright so now you've seen all the basic
-
-00:17:05.520 --> 00:17:06.160
-usages
-
-00:17:06.160 --> 00:17:08.720
-of the ef project it comes the question
-
-00:17:08.720 --> 00:17:11.600
-of what is the magic behind it
-
-00:17:11.600 --> 00:17:14.559
-all right let's open the hacking page in
-
-00:17:14.559 --> 00:17:15.919
-the wiki
-
-00:17:15.919 --> 00:17:20.400
-the design is laid out in a diagram here
-
-00:17:20.400 --> 00:17:25.120
-so and let's put it
-
-00:17:25.120 --> 00:17:27.839
-side by side along with my text so you
-
-00:17:27.839 --> 00:17:28.160
-can
-
-00:17:28.160 --> 00:17:32.320
-go we can follow through
-
-00:17:32.320 --> 00:17:36.080
-right okay let me
-
-00:17:36.080 --> 00:17:42.320
-sorry let me drink some water
-
-00:17:42.320 --> 00:17:46.000
-so this page in the wiki went into a lot
-
-00:17:46.000 --> 00:17:48.160
-of detail
-
-00:17:48.160 --> 00:17:49.520
-due to the time constraint I will just
-
-00:17:49.520 --> 00:17:51.679
-rephrase some of the ideas here so for
-
-00:17:51.679 --> 00:17:53.520
-anyone interested please have a look at
-
-00:17:53.520 --> 00:17:55.600
-the wiki yourself
-
-00:17:55.600 --> 00:17:58.160
-the easiest way to think about eaf is
-
-00:17:58.160 --> 00:17:58.720
-that
-
-00:17:58.720 --> 00:18:01.679
-the actual gui application is started in
-
-00:18:01.679 --> 00:18:02.960
-the background
-
-00:18:02.960 --> 00:18:04.960
-then the frame of the application is
-
-00:18:04.960 --> 00:18:07.120
-attached to the appropriate location on
-
-00:18:07.120 --> 00:18:07.679
-the
-
-00:18:07.679 --> 00:18:10.720
-Emacs window so
-
-00:18:10.720 --> 00:18:13.440
-you have linked qt5 with Emacs using
-
-00:18:13.440 --> 00:18:14.960
-list and python
-
-00:18:14.960 --> 00:18:17.120
-of the python site which is colored
-
-00:18:17.120 --> 00:18:18.640
-yellow in the image
-
-00:18:18.640 --> 00:18:20.559
-you have two graphics view and queue
-
-00:18:20.559 --> 00:18:22.960
-graphics scene objects
-
-00:18:22.960 --> 00:18:25.039
-these are used to simulate the e-max
-
-00:18:25.039 --> 00:18:26.640
-window buffer design
-
-00:18:26.640 --> 00:18:28.640
-where q graphics scene is similar to
-
-00:18:28.640 --> 00:18:29.840
-buffers in Emacs
-
-00:18:29.840 --> 00:18:31.840
-it controls the state and the content
-
-00:18:31.840 --> 00:18:34.240
-details of the application
-
-00:18:34.240 --> 00:18:39.039
-well q graphics view is similar to
-
-00:18:39.039 --> 00:18:41.200
-geographic view is similar to imax
-
-00:18:41.200 --> 00:18:43.200
-window it populates the buffer
-
-00:18:43.200 --> 00:18:45.919
-to graphics scene to the full program at
-
-00:18:45.919 --> 00:18:46.960
-the appropriate
-
-00:18:46.960 --> 00:18:50.320
-position whenever an ef mode buffer
-
-00:18:50.320 --> 00:18:57.679
-brings to a background
-
-00:18:57.679 --> 00:18:59.679
-whenever an ef mode buffer brings to the
-
-00:18:59.679 --> 00:19:00.880
-foreground sorry
-
-00:19:00.880 --> 00:19:02.559
-a queue graphics view instance is
-
-00:19:02.559 --> 00:19:05.120
-created and whenever the buffer goes to
-
-00:19:05.120 --> 00:19:06.080
-the background
-
-00:19:06.080 --> 00:19:08.000
-the q graphics view instance is then
-
-00:19:08.000 --> 00:19:09.120
-deleted
-
-00:19:09.120 --> 00:19:10.960
-while q graphics scene the actual
-
-00:19:10.960 --> 00:19:12.480
-process remains running in the
-
-00:19:12.480 --> 00:19:14.480
-background until the ef mode buffer is
-
-00:19:14.480 --> 00:19:16.000
-killed
-
-00:19:16.000 --> 00:19:18.320
-gpa compositing is used to ensure that q
-
-00:19:18.320 --> 00:19:19.440
-graphics view and
-
-00:19:19.440 --> 00:19:21.840
-graphics sync is synchronized real time
-
-00:19:21.840 --> 00:19:24.000
-using q windows set parent function
-
-00:19:24.000 --> 00:19:25.679
-the queue graphics view is attached to
-
-00:19:25.679 --> 00:19:27.840
-appropriate location on the e-max frame
-
-00:19:27.840 --> 00:19:30.640
-so that although great applications are
-
-00:19:30.640 --> 00:19:32.400
-not running within e-max
-
-00:19:32.400 --> 00:19:36.160
-they look as if they were
-
-00:19:36.160 --> 00:19:39.039
-so when user types on the keyboard it is
-
-00:19:39.039 --> 00:19:41.039
-first received by the Emacs ef
-
-00:19:41.039 --> 00:19:43.520
-ef mode buffer and then it lifts sends
-
-00:19:43.520 --> 00:19:45.360
-the event to google graphics sync using
-
-00:19:45.360 --> 00:19:46.240
-dbus
-
-00:19:46.240 --> 00:19:48.720
-when user clicks on the gui application
-
-00:19:48.720 --> 00:19:50.400
-it is received by the queue graphics
-
-00:19:50.400 --> 00:19:50.799
-view
-
-00:19:50.799 --> 00:19:53.280
-and process in python ellipse can
-
-00:19:53.280 --> 00:19:55.200
-communicate with python through dbus
-
-00:19:55.200 --> 00:19:59.200
-in other words in other words you can
-
-00:19:59.200 --> 00:20:01.360
-customize and extend Emacs not just
-
-00:20:01.360 --> 00:20:01.760
-using
-
-00:20:01.760 --> 00:20:04.480
-lisp and now you can use python this way
-
-00:20:04.480 --> 00:20:05.360
-one can leverage
-
-00:20:05.360 --> 00:20:07.039
-all the python properties like
-
-00:20:07.039 --> 00:20:09.600
-multi-threading or some other stuff
-
-00:20:09.600 --> 00:20:11.679
-the entire python ecosystem can be
-
-00:20:11.679 --> 00:20:13.520
-utilized as well
-
-00:20:13.520 --> 00:20:16.159
-such as the qt web engine that is the
-
-00:20:16.159 --> 00:20:16.960
-basis for
-
-00:20:16.960 --> 00:20:20.640
-our eef browser and pi mu pdf is the
-
-00:20:20.640 --> 00:20:23.360
-basis for the ef pdf viewer
-
-00:20:23.360 --> 00:20:25.840
-so this really opens the window to many
-
-00:20:25.840 --> 00:20:28.240
-many new possibilities to extend Emacs
-
-00:20:28.240 --> 00:20:32.720
-using eaf
-
-00:20:32.720 --> 00:20:36.080
-all right back here we are always
-
-00:20:36.080 --> 00:20:37.760
-looking for people to join the
-
-00:20:37.760 --> 00:20:39.679
-development there are many many
-
-00:20:39.679 --> 00:20:42.720
-more work that needs to be done like
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-00:20:42.720 --> 00:20:44.640
-such as testing and debug if there are
-
-00:20:44.640 --> 00:20:46.640
-more linux distros and window managers
-
-00:20:46.640 --> 00:20:47.760
-such as i3
-
-00:20:47.760 --> 00:20:51.200
-and stuff I mean you can also add new ef
-
-00:20:51.200 --> 00:20:52.080
-applications
-
-00:20:52.080 --> 00:20:54.240
-or debug and enhance existing af
-
-00:20:54.240 --> 00:20:55.440
-applications
-
-00:20:55.440 --> 00:20:58.000
-or you can port ef to native wayland
-
-00:20:58.000 --> 00:21:00.240
-which I just discussed with the
-
-00:21:00.240 --> 00:21:03.840
-the ems whip kit author uh a kill
-
-00:21:03.840 --> 00:21:07.919
-akira tile and she he told me that like
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-00:21:07.919 --> 00:21:10.159
-really like it must really yeah it
-
-00:21:10.159 --> 00:21:11.200
-doesn't really work
-
-00:21:11.200 --> 00:21:14.320
-um native villain because it uses
-
-00:21:14.320 --> 00:21:16.799
-x valence so it doesn't work on the pgdk
-
-00:21:16.799 --> 00:21:18.159
-port of Emacs
-
-00:21:18.159 --> 00:21:20.559
-so and we also need people to pour ef to
-
-00:21:20.559 --> 00:21:22.080
-non-free operating systems
-
-00:21:22.080 --> 00:21:25.600
-including windows and mac os
-
-00:21:25.600 --> 00:21:28.480
-and that's because like debug is a linux
-
-00:21:28.480 --> 00:21:30.080
-specific feature so it doesn't really
-
-00:21:30.080 --> 00:21:31.360
-work on other platform
-
-00:21:31.360 --> 00:21:33.039
-we need to change replace it with some
-
-00:21:33.039 --> 00:21:34.640
-alternative and
-
-00:21:34.640 --> 00:21:36.720
-geographic scene somehow doesn't really
-
-00:21:36.720 --> 00:21:38.640
-work on mac os
-
-00:21:38.640 --> 00:21:40.320
-and there are many other to-do lists
-
-00:21:40.320 --> 00:21:42.880
-available so please have a look
-
-00:21:42.880 --> 00:21:45.039
-if and see it's anything you want to
-
-00:21:45.039 --> 00:21:46.640
-work on
-
-00:21:46.640 --> 00:21:49.039
-all right so since this is a
-
-00:21:49.039 --> 00:21:51.120
-pre-recorded talk I won't be able to do
-
-00:21:51.120 --> 00:21:53.520
-the q a real time in the video
-
-00:21:53.520 --> 00:21:56.080
-however I will be around on the
-
-00:21:56.080 --> 00:21:57.200
-collaborate pad
-
-00:21:57.200 --> 00:22:00.559
-and the irc imax con you must come
-
-00:22:00.559 --> 00:22:01.360
-questions
-
-00:22:01.360 --> 00:22:04.240
-to answer any questions it pops up and
-
-00:22:04.240 --> 00:22:05.760
-you can also submit an issue
-
-00:22:05.760 --> 00:22:09.120
-on the repo and you can check the wiki
-
-00:22:09.120 --> 00:22:12.640
-for some other guides and tricks
-
-00:22:12.640 --> 00:22:15.039
-all right thank you guys and hopefully
-
-00:22:15.039 --> 00:22:16.000
-you find the
-
-00:22:16.000 --> 00:22:18.320
-this year project very interesting and
-
-00:22:18.320 --> 00:22:24.320
-enjoy the rest of Emacs com 2020