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Diffstat (limited to '2020/subtitles/emacsconf-2020--30-a-tour-of-vterm--gabriele-bozzola-sbozzolo-autogen.sbv')
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diff --git a/2020/subtitles/emacsconf-2020--30-a-tour-of-vterm--gabriele-bozzola-sbozzolo-autogen.sbv b/2020/subtitles/emacsconf-2020--30-a-tour-of-vterm--gabriele-bozzola-sbozzolo-autogen.sbv deleted file mode 100644 index 761568a6..00000000 --- a/2020/subtitles/emacsconf-2020--30-a-tour-of-vterm--gabriele-bozzola-sbozzolo-autogen.sbv +++ /dev/null @@ -1,633 +0,0 @@ -0:00:00.880,0:00:06.080 -hello and welcome to the stock - -0:00:03.760,0:00:07.919 -the title of the stock is a tour feature - -0:00:06.080,0:00:08.559 -a fast and fully featured terminal - -0:00:07.919,0:00:11.840 -emulator - -0:00:08.559,0:00:13.360 -inside new e-max so let's try to - -0:00:11.840,0:00:14.559 -understand what we mean with the pass - -0:00:13.360,0:00:17.520 -and fully featured - -0:00:14.559,0:00:18.320 -and to do that we'll compare v term with - -0:00:17.520,0:00:20.640 -the - -0:00:18.320,0:00:22.400 -packages which are built in Emacs mean - -0:00:20.640,0:00:25.199 -the term - -0:00:22.400,0:00:26.720 -so let's let's jump into the v term so - -0:00:25.199,0:00:29.679 -this is a feature buffer - -0:00:26.720,0:00:31.519 -and this is a ansi term buffer what I'm - -0:00:29.679,0:00:32.160 -going to do now is first I'm going to - -0:00:31.519,0:00:35.760 -prove you - -0:00:32.160,0:00:37.520 -what we move fast so to do that let me - -0:00:35.760,0:00:39.280 -open a large file display on screen or - -0:00:37.520,0:00:40.239 -large file this is about one megabyte of - -0:00:39.280,0:00:43.520 -data - -0:00:40.239,0:00:44.160 -and let me time that it takes about 0.6 - -0:00:43.520,0:00:47.200 -seconds - -0:00:44.160,0:00:49.760 -with feature let's do the same with - -0:00:47.200,0:00:51.520 -with ancient term well we already - -0:00:49.760,0:00:53.039 -already see the difference - -0:00:51.520,0:00:54.559 -so I will use this time to tell you - -0:00:53.039,0:00:57.360 -what's different and - -0:00:54.559,0:00:58.879 -what is v term exactly so v term is a - -0:00:57.360,0:01:01.120 -terminal emulator built - -0:00:58.879,0:01:02.719 -on top of an external library the - -0:01:01.120,0:01:05.519 -library is called libvi term - -0:01:02.719,0:01:07.200 -and is the same library used by newton - -0:01:05.519,0:01:10.000 -for their own terminal emulator - -0:01:07.200,0:01:10.799 -it's a c library and this is what gives - -0:01:10.000,0:01:15.119 -us - -0:01:10.799,0:01:17.280 -a lot of good features first the speed - -0:01:15.119,0:01:18.479 -time spent here 0.6 is essentially the - -0:01:17.280,0:01:21.520 -time that it takes to - -0:01:18.479,0:01:22.240 -one convert the emax representation of - -0:01:21.520,0:01:23.840 -like text - -0:01:22.240,0:01:26.400 -into the visa and representation of what - -0:01:23.840,0:01:28.479 -was a string and two into - -0:01:26.400,0:01:29.520 -actually displaying that and that can - -0:01:28.479,0:01:31.840 -take time - -0:01:29.520,0:01:33.680 -if there's a if there's quantification - -0:01:31.840,0:01:34.240 -involved so these are the 0.6 seconds - -0:01:33.680,0:01:36.960 -there - -0:01:34.240,0:01:37.920 -as we say in the in ancestor that's much - -0:01:36.960,0:01:39.920 -much - -0:01:37.920,0:01:41.680 -more time it's much slower so the - -0:01:39.920,0:01:42.880 -terminal will feel much snappier much - -0:01:41.680,0:01:46.079 -faster - -0:01:42.880,0:01:47.840 -but that's not the main benefit or the - -0:01:46.079,0:01:48.799 -only benefit of using this external - -0:01:47.840,0:01:52.320 -library - -0:01:48.799,0:01:55.439 -feature the second big benefit - -0:01:52.320,0:01:56.560 -is that v term has support for all the - -0:01:55.439,0:01:59.200 -escape codes - -0:01:56.560,0:02:01.119 -that exterm has support for so v term is - -0:01:59.200,0:02:03.600 -essentially as running x term - -0:02:01.119,0:02:04.799 -inside an imax buffer so let's see that - -0:02:03.600,0:02:07.119 -this for example - -0:02:04.799,0:02:08.239 -let's start by looking at the support - -0:02:07.119,0:02:09.920 -for colors - -0:02:08.239,0:02:11.840 -we have support for all the colors out - -0:02:09.920,0:02:15.040 -of the box we don't have to do anything - -0:02:11.840,0:02:15.680 -and if we did the same here well we have - -0:02:15.040,0:02:17.920 -only - -0:02:15.680,0:02:19.680 -20 colors there's a way to get all the - -0:02:17.920,0:02:23.040 -colors but it's much more involved - -0:02:19.680,0:02:26.000 -but this is not where v term shines - -0:02:23.040,0:02:27.200 -uh we can run all the commands that we - -0:02:26.000,0:02:30.480 -want - -0:02:27.200,0:02:33.040 -h top and cdu - -0:02:30.480,0:02:33.840 -everything runs here also this title - -0:02:33.040,0:02:36.400 -it's a - -0:02:33.840,0:02:37.040 -it's a fairly complicated manipulation - -0:02:36.400,0:02:40.879 -of - -0:02:37.040,0:02:42.319 -the window and it will not work here - -0:02:40.879,0:02:44.640 -it just doesn't work actually now the - -0:02:42.319,0:02:48.400 -terminal is probably messed up - -0:02:44.640,0:02:50.959 -yes so using this external library - -0:02:48.400,0:02:52.000 -removes the burden from the developers - -0:02:50.959,0:02:54.000 -of having to implement - -0:02:52.000,0:02:55.360 -support for all these cape codes we just - -0:02:54.000,0:02:58.480 -use those - -0:02:55.360,0:03:01.760 -so in many ways running veteran - -0:02:58.480,0:03:04.400 -is us running extern inside a max - -0:03:01.760,0:03:05.840 -but it's better than that because since - -0:03:04.400,0:03:08.879 -this is an e-max buffer - -0:03:05.840,0:03:09.760 -we can enjoy a lot of features from - -0:03:08.879,0:03:11.920 -Emacs - -0:03:09.760,0:03:13.200 -as well as a tighter integration with - -0:03:11.920,0:03:16.560 -e-max itself - -0:03:13.200,0:03:17.599 -for example as you see here the title of - -0:03:16.560,0:03:20.720 -my buffer - -0:03:17.599,0:03:21.760 -is from the director I'm in so let's go - -0:03:20.720,0:03:24.799 -to my tmp - -0:03:21.760,0:03:26.560 -the title will change so there's - -0:03:24.799,0:03:28.000 -information being exchanged between v - -0:03:26.560,0:03:29.760 -term and index - -0:03:28.000,0:03:32.000 -and of course the title is not the only - -0:03:29.760,0:03:34.799 -place where information is exchanged - -0:03:32.000,0:03:35.920 -I can find a file and I will be in the - -0:03:34.799,0:03:38.239 -directory - -0:03:35.920,0:03:40.000 -where my terminal is this feature is - -0:03:38.239,0:03:41.680 -also available in nc term - -0:03:40.000,0:03:43.840 -and it works also on b term and it - -0:03:41.680,0:03:44.720 -follows me so if I go to tmp I'll get - -0:03:43.840,0:03:48.000 -the tmp - -0:03:44.720,0:03:48.640 -if I ssh to a remote server it will work - -0:03:48.000,0:03:51.120 -also - -0:03:48.640,0:03:53.920 -on remote servers as well which is a - -0:03:51.120,0:03:55.760 -very nice way to edit files remotely - -0:03:53.920,0:03:57.360 -while we're working on a shelf and - -0:03:55.760,0:03:59.599 -second while vterm - -0:03:57.360,0:04:02.159 -is not an e-lisp interpreter like - -0:03:59.599,0:04:06.080 -initial what we can do is we can - -0:04:02.159,0:04:08.319 -still run inbox functions so for example - -0:04:06.080,0:04:10.159 -that requires some configuration the - -0:04:08.319,0:04:12.480 -term - -0:04:10.159,0:04:14.000 -command message I as you see there's a - -0:04:12.480,0:04:16.239 -higher so what I'm doing - -0:04:14.000,0:04:17.199 -is I'm executing the eagles function I - -0:04:16.239,0:04:19.840 -and I can drop that - -0:04:17.199,0:04:20.320 -and turn it around uh hash function to - -0:04:19.840,0:04:24.880 -run - -0:04:20.320,0:04:27.600 -a-list functions or another one file see - -0:04:24.880,0:04:28.800 -we call this feature message passing and - -0:04:27.600,0:04:30.880 -it requires - -0:04:28.800,0:04:32.000 -some configuration on the emac side as - -0:04:30.880,0:04:34.000 -well as in the shell side - -0:04:32.000,0:04:35.360 -it's important to stress what's the - -0:04:34.000,0:04:37.360 -nature of feature - -0:04:35.360,0:04:39.120 -for instance every time I'm sending a - -0:04:37.360,0:04:40.800 -key binding it's not immediately clear - -0:04:39.120,0:04:42.720 -if my intention is to send it to the - -0:04:40.800,0:04:44.320 -shell or to imax so v term implements - -0:04:42.720,0:04:46.800 -some reasonable defaults - -0:04:44.320,0:04:49.120 -but at the moment it's mainly packaged - -0:04:46.800,0:04:51.199 -to display characters on a screen - -0:04:49.120,0:04:53.600 -so for example if you're using evil the - -0:04:51.199,0:04:55.759 -editing commands in evil will not work - -0:04:53.600,0:04:57.840 -immediately there's some work to be done - -0:04:55.759,0:04:58.479 -and integration can be improved on that - -0:04:57.840,0:05:00.240 -side but - -0:04:58.479,0:05:02.240 -sometimes we really want this to behave - -0:05:00.240,0:05:05.440 -exactly like a imax buffer - -0:05:02.240,0:05:07.039 -we want to be able to search if - -0:05:05.440,0:05:08.880 -if I try to get it to search it will not - -0:05:07.039,0:05:09.360 -work I will send it to the shop so to do - -0:05:08.880,0:05:12.400 -that - -0:05:09.360,0:05:12.800 -we enabled the term copy mode so as you - -0:05:12.400,0:05:15.280 -see - -0:05:12.800,0:05:17.039 -copy mode and now this buffer is - -0:05:15.280,0:05:21.120 -essentially a fundamental buffer - -0:05:17.039,0:05:24.400 -I can move around as I can search - -0:05:21.120,0:05:25.840 -uh so it must have I - -0:05:24.400,0:05:27.120 -can do everything I want and there are - -0:05:25.840,0:05:29.600 -additional features for example I can - -0:05:27.120,0:05:31.440 -jump around - -0:05:29.600,0:05:32.639 -all the prompts and I find this - -0:05:31.440,0:05:34.400 -extremely useful - -0:05:32.639,0:05:35.919 -because I can copy update from my - -0:05:34.400,0:05:39.199 -programs or - -0:05:35.919,0:05:42.400 -what I always have to do is I have to - -0:05:39.199,0:05:43.120 -google some errors so what I do is I - -0:05:42.400,0:05:45.919 -select that - -0:05:43.120,0:05:46.880 -and I have my keybinding in maksakov and - -0:05:45.919,0:05:49.199 -I'm googling - -0:05:46.880,0:05:50.400 -what I have to google so this is very - -0:05:49.199,0:05:52.800 -nice and - -0:05:50.400,0:05:54.400 -if I now that have selected something if - -0:05:52.800,0:05:57.120 -I just press return I will - -0:05:54.400,0:05:57.440 -go back to my normal editing mode with - -0:05:57.120,0:06:00.400 -the - -0:05:57.440,0:06:01.600 -text copied so I can paste it back so - -0:06:00.400,0:06:04.160 -it's a quick way to - -0:06:01.600,0:06:06.400 -interact with copy and interact with uh - -0:06:04.160,0:06:07.840 -with the output of a buffer so finally - -0:06:06.400,0:06:10.560 -let's discuss how to actually - -0:06:07.840,0:06:12.400 -use beta let's circle back and let's go - -0:06:10.560,0:06:14.400 -and let's look at the github repo - -0:06:12.400,0:06:15.520 -where development is happening v term is - -0:06:14.400,0:06:17.919 -available in velpa - -0:06:15.520,0:06:18.960 -but since it's leveraging the power of - -0:06:17.919,0:06:20.639 -an external module - -0:06:18.960,0:06:22.000 -you must have Emacs compiled with - -0:06:20.639,0:06:25.600 -support for modules - -0:06:22.000,0:06:27.199 -and many distros like ubuntu debian - -0:06:25.600,0:06:29.840 -that's not there so you have to get - -0:06:27.199,0:06:30.160 -Emacs with support for modules compiling - -0:06:29.840,0:06:32.000 -or - -0:06:30.160,0:06:33.840 -getting images somewhere else and also - -0:06:32.000,0:06:34.400 -the first time you are going to use this - -0:06:33.840,0:06:37.440 -which - -0:06:34.400,0:06:40.319 -works only on mac or - -0:06:37.440,0:06:41.759 -new linux systems Emacs will try to find - -0:06:40.319,0:06:43.680 -and compile this module - -0:06:41.759,0:06:45.440 -so it's important this requirement is - -0:06:43.680,0:06:47.600 -important if you're using windows - -0:06:45.440,0:06:49.199 -well that's not it's not available and - -0:06:47.600,0:06:52.560 -will not work - -0:06:49.199,0:06:53.440 -so to conclude I want to just advertise - -0:06:52.560,0:06:56.240 -this page - -0:06:53.440,0:06:57.120 -if you have problems look at the issues - -0:06:56.240,0:06:59.039 -and - -0:06:57.120,0:07:00.800 -open unusual in case we'll try to help - -0:06:59.039,0:07:02.639 -you we are very excited about feature - -0:07:00.800,0:07:10.319 -and I think it's a transformative - -0:07:02.639,0:07:10.319 -terminal experience inside glue imax - |