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diff --git a/2025/captions/emacsconf-2025-latex--latex-export-in-orgmode-the-overhaul--pedro-a-aranda-gutirrez--main.vtt b/2025/captions/emacsconf-2025-latex--latex-export-in-orgmode-the-overhaul--pedro-a-aranda-gutirrez--main.vtt new file mode 100644 index 00000000..5a734387 --- /dev/null +++ b/2025/captions/emacsconf-2025-latex--latex-export-in-orgmode-the-overhaul--pedro-a-aranda-gutirrez--main.vtt @@ -0,0 +1,1437 @@ +WEBVTT captioned by sachac + +NOTE Introduction + +00:00:00.140 --> 00:00:04.456 +Okay. Good afternoon, morning or evening, + +00:00:04.457 --> 00:00:06.519 +whatever it is in your time zone. + +00:00:06.520 --> 00:00:10.959 +I'm Pedro Aranda and I'm going to be talking about + +00:00:10.960 --> 00:00:12.959 +what I've been doing + +00:00:12.960 --> 00:00:16.999 +with the latest backend in Org Mode + +00:00:17.000 --> 00:00:24.719 +and the different... Sorry... and the way it treats fonts. + +00:00:24.720 --> 00:00:28.279 +Just a couple of words before + +00:00:28.280 --> 00:00:30.359 +I am going to go through motivation, + +00:00:30.360 --> 00:00:35.279 +the evolution and get you an idea of what you can get + +00:00:35.280 --> 00:00:38.079 +from the feature branch that I have started + +00:00:38.080 --> 00:00:41.399 +and give a couple of demos. + +NOTE Motivation + +00:00:41.400 --> 00:00:47.779 +Actually, my motivation is I was using ox-latex currently + +00:00:47.780 --> 00:00:51.439 +and ox-beamer for as a foundation for my activities, + +00:00:51.440 --> 00:00:54.399 +mainly for lecture notes and lecture slides + +00:00:54.400 --> 00:01:01.359 +so I came from pure LaTeX and beamers + +00:01:01.360 --> 00:01:04.519 +and for me the real cool use case, + +00:01:04.520 --> 00:01:05.959 +or I would say this was + +00:01:05.960 --> 00:01:07.959 +the killer use case for me was + +00:01:07.960 --> 00:01:09.239 +I have a programming lecture, + +00:01:09.240 --> 00:01:12.199 +which is sort of a Python 101, + +00:01:12.200 --> 00:01:14.199 +and when I'm live in the lecture, + +00:01:14.200 --> 00:01:18.279 +I can go, and if the pupils ask me, I can modify code, + +00:01:18.280 --> 00:01:21.079 +show modified code and results on the fly, + +00:01:21.080 --> 00:01:25.119 +and that's something that really impresses the kids + +00:01:25.120 --> 00:01:30.159 +and makes them understand what we are talking about. + +00:01:30.160 --> 00:01:34.399 +From my pro... subjective point of view, in some, + +00:01:34.400 --> 00:01:38.159 +mainly in ox-beamer, some of the things that I was missing + +00:01:38.160 --> 00:01:41.879 +is that emojis would really break the monotony + +00:01:41.880 --> 00:01:47.679 +and I missed the support for emojis and stock Beamer themes. + +00:01:47.680 --> 00:01:52.159 +And some fonts I also found were suboptimal + +00:01:52.160 --> 00:01:56.639 +or difficult to adapt in case they need an adaptation. + +00:01:56.640 --> 00:02:01.799 +So, for example, people who need special fonts + +00:02:01.800 --> 00:02:05.799 +because of their special capabilities, + +00:02:05.800 --> 00:02:11.159 +it's difficult to get those fonts from the stock themes + +00:02:11.160 --> 00:02:17.359 +and from the stock font implementations you have there. + +00:02:17.360 --> 00:02:21.479 +So, requirements from the Emacs side to do this is none, + +00:02:21.480 --> 00:02:24.999 +because basically, okay, the only thing I want + +00:02:25.000 --> 00:02:27.159 +is to work on a vanilla Emacs, + +00:02:27.160 --> 00:02:28.399 +which is more or less recent, + +00:02:28.400 --> 00:02:30.119 +because yes, I'm a bit of a freak + +00:02:30.120 --> 00:02:32.479 +and I compile it every two, three... + +00:02:32.480 --> 00:02:36.839 +I get it from master and compile it every two, three days. + +00:02:36.840 --> 00:02:40.599 +And yahoo, I had to change to a new Mac, + +00:02:40.600 --> 00:02:47.359 +and I'm able now to get my vanilla Emacs within four. + +00:02:47.360 --> 00:02:53.359 +So that was a big accomplishment in these last days. + +NOTE Evolution + +00:02:53.360 --> 00:02:55.119 +What is the evolution? + +00:02:55.120 --> 00:03:00.719 +I mean my personal evolution and my take of ox-latex + +00:03:00.720 --> 00:03:05.919 +was I put everything in a in a LaTeX file + +00:03:05.920 --> 00:03:09.959 +and I input it through the LaTeX header, and that's it. + +00:03:09.960 --> 00:03:12.319 +But that was not very beginner-friendly, + +00:03:12.320 --> 00:03:15.719 +and once I had some people interested in this, + +00:03:15.720 --> 00:03:19.159 +"oh wow, I can modify the code on the fly + +00:03:19.160 --> 00:03:21.119 +and see the results on the fly," + +00:03:21.120 --> 00:03:26.719 +it was more difficult for them to give it a go. + +00:03:26.720 --> 00:03:32.359 +So I just... Because they, + +00:03:32.360 --> 00:03:36.919 +there are people who have not that big, + +00:03:36.920 --> 00:03:41.159 +that much experience with LaTeX + +00:03:41.160 --> 00:03:44.919 +and it can even be a bridge to introduce people into LaTeX. + +00:03:44.920 --> 00:03:48.959 +So, in any case, it was not very beginner-friendly + +00:03:48.960 --> 00:03:52.799 +and I had complaints on that. + +00:03:52.800 --> 00:03:57.159 +So, what I think was, we can do better. + +00:03:57.160 --> 00:04:00.399 +My first attempt was something that was completely neutral + +00:04:00.400 --> 00:04:02.879 +to Babel or Polyglossia. + +00:04:02.880 --> 00:04:06.199 +and it was made basically for font LaTeX + +00:04:06.200 --> 00:04:08.839 +although some of the things can... for lualatex + +00:04:08.840 --> 00:04:14.279 +and some of the things can also be used with xelatex. + +00:04:14.280 --> 00:04:16.519 +So overriding template fonts + +00:04:16.520 --> 00:04:21.279 +and taking into account fallback fonts + +00:04:21.280 --> 00:04:23.839 +was something that I learned + +00:04:23.840 --> 00:04:27.959 +when we started this conversation, + +00:04:27.960 --> 00:04:29.839 +and the only problem with this + +00:04:29.840 --> 00:04:34.407 +is that fallback fonts only work for lualatex + +00:04:34.408 --> 00:04:36.307 +because xelatex doesn't support them. + +00:04:36.308 --> 00:04:40.540 +Actually, fallback fonts is a lua feature. + +00:04:40.541 --> 00:04:45.319 +There was already something in the list + +00:04:45.320 --> 00:04:48.399 +regarding script detection which helped me a lot. + +00:04:48.400 --> 00:04:52.399 +So big recognition to Juan M. Macias for that, + +00:04:52.400 --> 00:04:57.679 +and for his publishing the algorithm or the script + +00:04:57.680 --> 00:05:04.399 +in the org mode mailing list. + +00:05:04.400 --> 00:05:11.319 +And then came my sort of little nightmare, + +00:05:11.320 --> 00:05:14.174 +which was when we started talking + +00:05:14.175 --> 00:05:19.039 +about internationalization or localization. + +00:05:19.040 --> 00:05:21.599 +Looking back, I have a very strange feeling + +00:05:21.600 --> 00:05:22.919 +about a blurring target there. + +00:05:22.920 --> 00:05:29.679 +Because the reality, being very, very frank, did I need it? + +00:05:29.680 --> 00:05:34.919 +Really no, because I just needed + +00:05:34.920 --> 00:05:39.999 +to add Spanish with Babel and that was it. + +00:05:40.000 --> 00:05:43.199 +Well actually for me it still is + +00:05:43.200 --> 00:05:46.519 +and you can put the British, German or Italian + +00:05:46.520 --> 00:05:48.359 +it continues to be true for me, + +00:05:48.360 --> 00:05:51.839 +so I had personally, I had little interest in doing that, + +00:05:51.840 --> 00:05:55.319 +but I took it as a challenge + +00:05:55.320 --> 00:06:02.479 +which has shown to be really tough. + +NOTE What do you get from the feature branch? + +00:06:02.480 --> 00:06:04.955 +What do you get from the feature branch? + +00:06:04.956 --> 00:06:08.999 +The feature branch adds font management for fontspec, + +00:06:09.000 --> 00:06:10.839 +which is not strictly needed + +00:06:10.840 --> 00:06:14.919 +when you are on Latin, Cyrillic, and Greek scripts + +00:06:14.920 --> 00:06:18.579 +as long as the fonts in your template support them. + +00:06:18.580 --> 00:06:28.799 +But again, it's a nice way to get better support here. + +00:06:28.800 --> 00:06:33.039 +You don't need it if you're happy with the fonts you get + +00:06:33.040 --> 00:06:38.439 +from the templates that you use both for Beamer + +00:06:38.440 --> 00:06:40.359 +and the document classes in LaTeX. + +00:06:40.360 --> 00:06:43.639 +If you don't want to use alternative fonts, + +00:06:43.640 --> 00:06:47.999 +you don't need it, but you would need it. + +00:06:48.000 --> 00:06:50.639 +Of course, if you don't want things like, + +00:06:50.640 --> 00:06:55.719 +for example, emojis or need emojis, + +00:06:55.720 --> 00:06:59.359 +you really don't need fallback fonts. + +00:06:59.360 --> 00:07:05.319 +So my idea is that the next thing that you can add + +00:07:05.320 --> 00:07:07.319 +is Babel and Polyglossia here + +00:07:07.320 --> 00:07:13.079 +for enhanced localization and multilingual documents there. + +00:07:13.080 --> 00:07:17.799 +And at the end, my vision was that the keywords involved + +00:07:17.800 --> 00:07:19.799 +would be language, the main language. + +00:07:19.800 --> 00:07:23.039 +And then a nice idea from Ihor + +00:07:23.040 --> 00:07:27.199 +was to put all the secondary languages there too. + +00:07:27.200 --> 00:07:30.559 +Then specify the LaTeX compiler. + +00:07:30.560 --> 00:07:32.639 +Then what I've added is a keyword + +00:07:32.640 --> 00:07:34.279 +which is `#+LATEX_MULTI_LANG:` + +00:07:34.280 --> 00:07:37.879 +which can be fontspec or babel or polyglossia + +00:07:37.880 --> 00:07:40.319 +for localized documents. + +00:07:40.320 --> 00:07:45.359 +By default, this thing is nil and when it is nil, + +00:07:45.360 --> 00:07:51.719 +you get the behavior from Org Mode + +00:07:51.720 --> 00:07:56.559 +that you already are used to if you don't want to switch. + +00:07:56.560 --> 00:08:00.559 +Jing Huang was there and I was really, + +00:08:00.560 --> 00:08:03.479 +was chirped into the conversation + +00:08:03.480 --> 00:08:06.799 +and really helpful and a big thanks to him + +00:08:06.800 --> 00:08:10.974 +because he also had an easy idea + +00:08:10.975 --> 00:08:13.079 +to support Chinese and Japanese documents, + +00:08:13.080 --> 00:08:17.239 +so that the only thing that you need is to add the language + +00:08:17.240 --> 00:08:21.859 +that you're going to write your document in. + +00:08:21.860 --> 00:08:23.639 +Very, very big thank you for that, + +00:08:23.640 --> 00:08:25.399 +because that was really a challenge + +00:08:25.400 --> 00:08:29.279 +not being able to decipher + +00:08:29.280 --> 00:08:32.639 +what I was what I was coding there + +00:08:32.640 --> 00:08:34.439 +in terms of: I have a document, + +00:08:34.440 --> 00:08:37.519 +I copy and paste it from some place, + +00:08:37.520 --> 00:08:40.039 +and from there, I get my answer, I get my PDF, + +00:08:40.040 --> 00:08:47.279 +and I compare whether it is correct or not. + +NOTE Behind the scenes: .dir-locals.el + +00:08:47.280 --> 00:08:50.239 +So what is behind the scenes? + +00:08:50.240 --> 00:08:52.959 +I've always suggested that in order + +00:08:52.960 --> 00:08:55.239 +to use the feature branch efficiently, + +00:08:55.240 --> 00:08:59.919 +you create a file with the default values + +00:08:59.920 --> 00:09:02.439 +you need for your variables, + +00:09:02.440 --> 00:09:06.199 +and that's this famous .dir-locals.el files. + +00:09:06.200 --> 00:09:10.239 +What I do is, I have a generic one + +00:09:10.240 --> 00:09:12.079 +in my home documents directory, + +00:09:12.080 --> 00:09:16.599 +and this is used for all the org documents + +00:09:16.600 --> 00:09:20.559 +that are in subdirectories from there. + +00:09:20.560 --> 00:09:24.039 +Why? Because normally you will not be + +00:09:24.040 --> 00:09:26.599 +changing your fonts that often, + +00:09:26.600 --> 00:09:29.599 +and if you need, you can always go + +00:09:29.600 --> 00:09:33.479 +and have your configuration locally. + +00:09:33.480 --> 00:09:38.639 +So it's this point where I'm collecting + +00:09:38.640 --> 00:09:40.759 +my font configuration and + +00:09:40.760 --> 00:09:47.519 +for me, this gives me a very, very nice quick start + +00:09:47.520 --> 00:09:49.639 +for new documents and presentations. + +00:09:49.640 --> 00:09:54.239 +And there you can even configure a lot of compiler + +00:09:54.240 --> 00:09:56.839 +and font language management too, + +00:09:56.840 --> 00:10:00.919 +so you have everything in a file. + +00:10:00.920 --> 00:10:04.759 +And the other nice thing for that + +00:10:04.760 --> 00:10:08.479 +is that you can also include that in a subdirectory. + +00:10:08.480 --> 00:10:13.199 +And if this subdirectory is something that you're sharing + +00:10:13.200 --> 00:10:14.479 +in a project with other people, + +00:10:14.480 --> 00:10:17.759 +you are already configuring the, say, + +00:10:17.760 --> 00:10:23.559 +quote, unquote, corporate look and feel for your documents + +00:10:23.560 --> 00:10:26.079 +in that project for everyone + +00:10:26.080 --> 00:10:28.919 +and no one else has to care about + +00:10:28.920 --> 00:10:35.119 +how this document has to be configured. + +00:10:35.120 --> 00:10:38.679 +One of the things that I really like in this approach + +00:10:38.680 --> 00:10:40.439 +is that it is a grow-as-you-go. + +00:10:40.440 --> 00:10:44.079 +So, for example, you can start with something like that, + +00:10:44.080 --> 00:10:48.439 +which is I have my fonts, my basic fonts for main, + +00:10:48.440 --> 00:10:51.479 +which is the serif font, for sans, + +00:10:51.480 --> 00:10:54.079 +which is the sans serif font, for maths, + +00:10:54.080 --> 00:10:58.639 +and for the mono, with some features like to make them scale. + +00:10:58.640 --> 00:11:03.739 +This is something that is provided by you + +00:11:03.740 --> 00:11:05.359 +through the fontspec package, + +00:11:05.360 --> 00:11:08.959 +and you're happy with it, and you work with it, + +00:11:08.960 --> 00:11:11.919 +and in a given moment, + +00:11:11.920 --> 00:11:14.439 +you go and you have your own problems + +00:11:14.440 --> 00:11:15.779 +or your own challenge, + +00:11:15.780 --> 00:11:20.279 +and you need to have, for example, emojis for one of the fonts, + +00:11:20.280 --> 00:11:24.959 +and what you do is, in this case, you just add the emojis + +00:11:24.960 --> 00:11:31.239 +as a fallback font in the font that where you want to replace this. + +00:11:31.240 --> 00:11:37.339 +This is what I'm doing right now for this presentation, and you will see... + +00:11:37.340 --> 00:11:39.119 +You can always, as I've said, + +00:11:39.120 --> 00:11:42.359 +you can always have your dir-locals, + +00:11:42.360 --> 00:11:46.319 +and you can copy that into a working directory + +00:11:46.320 --> 00:11:49.439 +which needs special adaptations or has special needs, + +00:11:49.440 --> 00:11:54.119 +and from there, you have that directory + +00:11:54.120 --> 00:11:59.079 +with your modified or customized dir-locals.el file. + +NOTE When fontspec is not enough + +00:11:59.080 --> 00:12:05.439 +So, fontspec is normally enough, + +00:12:05.440 --> 00:12:09.379 +but sometimes, you can't control all the fonts + +00:12:09.380 --> 00:12:15.479 +with fontspec only, and there you have a polyglot here + +00:12:15.480 --> 00:12:19.319 +and babel coming to your help. + +00:12:19.320 --> 00:12:21.359 +This may also be the case + +00:12:21.360 --> 00:12:25.119 +that you are working in an intended language, + +00:12:25.120 --> 00:12:28.959 +I don't know which, but an intended language, and you found, + +00:12:28.960 --> 00:12:31.279 +and you wanted to see how that was configured, + +00:12:31.280 --> 00:12:34.999 +and you found the latest example + +00:12:35.000 --> 00:12:38.639 +that used Babel or Polyglossia. + +00:12:38.640 --> 00:12:42.559 +The exporter provides you variables + +00:12:42.560 --> 00:12:48.679 +to configure both fontspec, Polyglossia and Babel. + +00:12:48.680 --> 00:12:56.799 +So just as an example of how I picture this is, + +00:12:56.800 --> 00:12:59.359 +uh, you find it in the Internet, + +00:12:59.360 --> 00:13:01.679 +something like that, uh, something like this, + +00:13:01.680 --> 00:13:05.599 +because you have your document and you need Thai. + +00:13:05.600 --> 00:13:09.999 +So, and I found an example in the internet + +00:13:10.000 --> 00:13:13.359 +that tells me that I'm going to be using Babel. + +00:13:13.360 --> 00:13:15.079 +Main is going to be English. + +00:13:15.080 --> 00:13:20.339 +And I'm also going to have Thai. + +00:13:20.340 --> 00:13:23.840 +And then they tell me that, for English, + +00:13:23.841 --> 00:13:26.639 +I'm going to be using Noto Serif for the main, + +00:13:26.640 --> 00:13:30.082 +for the main of the serif font, + +00:13:30.083 --> 00:13:31.759 +Noto Sans for the sans font, + +00:13:31.760 --> 00:13:35.799 +and then when I'm writing things in Thai, + +00:13:35.800 --> 00:13:41.106 +I'm going to be using Noto Serif Thai and Noto Sans Thai. + +00:13:41.107 --> 00:13:42.399 +That's what I see in the Internet. + +00:13:42.400 --> 00:13:47.159 +So what you can always do, what you would do in this case, + +00:13:47.160 --> 00:13:54.279 +is I'm going to get and map the font configurations + +00:13:54.280 --> 00:13:59.239 +from the latest into this variable. + +00:13:59.240 --> 00:14:03.479 +Things that you have to take into account here + +00:14:03.480 --> 00:14:05.107 +is, for example, the language. + +00:14:05.108 --> 00:14:07.774 +The language here is Thai. You have the language + +00:14:07.775 --> 00:14:10.559 +that you're intending this font for is Thai. + +00:14:10.560 --> 00:14:16.319 +So this appears here. In case you don't have any language, + +00:14:16.320 --> 00:14:19.439 +like in the first two lines, + +00:14:19.440 --> 00:14:21.039 +you just say that the language is nil, + +00:14:21.040 --> 00:14:23.959 +which is the language for the default language. + +00:14:23.960 --> 00:14:26.799 +The other thing is in my example, + +00:14:26.800 --> 00:14:29.374 +in this example that I found in the Internet, + +00:14:29.375 --> 00:14:40.174 +I have my properties for the fonts in this part in LaTeX, + +00:14:40.175 --> 00:14:43.907 +and I put them as properties here. + +00:14:43.908 --> 00:14:53.519 +That's the whole idea behind the feature branch. + +00:14:53.520 --> 00:15:01.640 +The babelprovide part is generated or is also integrated + +00:15:01.641 --> 00:15:11.319 +from the Org header, mainly from the language line. + +00:15:11.320 --> 00:15:14.600 +We have a variable in case you need to tweak it, + +00:15:14.640 --> 00:15:21.079 +but normally the defaults provided by Org are good enough. + +NOTE Rationale behind my take at LaTeX font management + +00:15:21.080 --> 00:15:27.679 +So what is the rationale behind my take at LaTeX font management? + +00:15:27.680 --> 00:15:31.359 +That's something that might be something very personal. + +00:15:31.360 --> 00:15:33.759 +When am I using fontspec? + +00:15:33.760 --> 00:15:37.239 +I'm using fontspec when I'm with Lua- or xelatex, + +00:15:37.240 --> 00:15:40.279 +and I want fonts that are different + +00:15:40.280 --> 00:15:42.439 +from those specified in the LaTeX class. + +00:15:42.440 --> 00:15:49.279 +That's point number one. I will also go for fontspec + +00:15:49.280 --> 00:15:52.599 +when I need to support scripts, + +00:15:52.600 --> 00:15:54.559 +but I'm missing in the fonts I use, + +00:15:54.560 --> 00:15:59.479 +and I can use fallback fonts for that. I have two. + +00:15:59.480 --> 00:16:05.239 +The only limitation I have here is the following: + +00:16:05.240 --> 00:16:09.039 +all languages must be left to right. + +00:16:09.040 --> 00:16:12.799 +And if you don't say anything at all, + +00:16:12.800 --> 00:16:16.519 +the LaTeX backend assumes that you want the dates, + +00:16:16.520 --> 00:16:18.599 +standard names for the abstract and so on + +00:16:18.600 --> 00:16:21.039 +in American English, if you're using them. + +00:16:21.040 --> 00:16:24.759 +In many cases, you're not using any sort of + +00:16:24.760 --> 00:16:26.274 +abstract, table of contents, and so on, + +00:16:26.275 --> 00:16:27.879 +and you don't need that. + +00:16:27.880 --> 00:16:34.119 +The important thing is maybe date management. + +00:16:34.120 --> 00:16:36.199 +If you need dates, headings + +00:16:36.200 --> 00:16:40.359 +or anything in any other language or locale, + +00:16:40.360 --> 00:16:46.199 +then yes, then you need to use Babel or Polyglossia. + +00:16:46.200 --> 00:16:52.959 +Choice, Depends. Can use polyglossia here, + +00:16:52.960 --> 00:16:56.039 +or you can use Babel, whatever you want. + +00:16:56.040 --> 00:16:58.599 +Also, in some cases, it will depend + +00:16:58.600 --> 00:17:00.399 +if you've been researching a bit + +00:17:00.400 --> 00:17:02.439 +of how this is done with pure LaTeX, + +00:17:02.440 --> 00:17:05.639 +it will be also depending on, uh, + +00:17:05.640 --> 00:17:07.799 +on the examples that you get. + +00:17:07.800 --> 00:17:10.999 +So, what can you, when you are using + +00:17:11.000 --> 00:17:12.639 +Babel or Polyglossia here, what do you have? + +00:17:12.640 --> 00:17:16.919 +You have your dates, your headings, and so on. + +00:17:16.920 --> 00:17:20.999 +You might need to control the text + +00:17:21.000 --> 00:17:22.919 +in the sense that what passage + +00:17:22.920 --> 00:17:24.519 +is written in what language. + +00:17:24.520 --> 00:17:29.159 +For example, for things like hyphenation + +00:17:29.160 --> 00:17:37.119 +and some ways of writing the hyphens in a + +00:17:37.120 --> 00:17:42.519 +and direct speech and things like that. + +00:17:42.520 --> 00:17:45.519 +And the other place where you need + +00:17:45.520 --> 00:17:47.279 +other Babel or Polyglossia here, + +00:17:47.280 --> 00:17:50.439 +and you will see that, because all examples + +00:17:50.440 --> 00:17:53.319 +that you can get for later, in this case, + +00:17:53.320 --> 00:17:56.140 +is when you have a language + +00:17:56.141 --> 00:17:59.407 +that uses right to left alignment + +00:17:59.408 --> 00:18:06.439 +like Arabic, Hebrew and others. + +00:18:06.440 --> 00:18:14.479 +So one note of, I would say, care is you always use the, + +00:18:14.480 --> 00:18:16.639 +if you use Unicode fonts + +00:18:16.640 --> 00:18:19.719 +that includes the scripts as you need, + +00:18:19.720 --> 00:18:28.239 +you will have done, that will be a great leap for you + +00:18:28.240 --> 00:18:34.479 +because that simplifies the configuration a lot. + +NOTE Demonstrations + +00:18:34.480 --> 00:18:36.839 +Now, a couple of demos. + +00:18:36.840 --> 00:18:39.319 +I don't know if you've noticed + +00:18:39.320 --> 00:18:43.199 +first demo is that I'm using + +00:18:43.200 --> 00:18:47.519 +fonts that are not the official fonts + +00:18:47.520 --> 00:18:48.959 +in this Beamer template, + +00:18:48.960 --> 00:18:51.399 +which is by the way Boadilla. + +00:18:51.400 --> 00:18:53.959 +This would be the first thing. + +00:18:53.960 --> 00:18:56.599 +So I've been using other fonts, + +00:18:56.600 --> 00:19:01.679 +and they are, at least from what I get in class, + +00:19:01.680 --> 00:19:03.759 +they are more readable than the official... + +00:19:03.760 --> 00:19:06.279 +than the default fonts in Polyglossia, + +00:19:06.280 --> 00:19:12.239 +that you get in Babel for the Boadilla theme. + +00:19:12.240 --> 00:19:14.319 +Another thing is what I've told you, + +00:19:14.320 --> 00:19:18.959 +I have my own things like emojis. + +00:19:18.960 --> 00:19:22.799 +Now, if you allow me for a second, + +00:19:22.800 --> 00:19:26.999 +I'm going to switch to the Emacs + +00:19:27.000 --> 00:19:36.759 +which is running behind the scenes to show you what. + +00:19:36.760 --> 00:19:42.119 +Okay, fine. So, this is the presentation. + +00:19:42.120 --> 00:19:44.799 +that I have here, and as you see, + +00:19:44.800 --> 00:19:54.839 +I'm using Lua LaTeX and just fontspec, + +00:19:54.840 --> 00:19:59.440 +given I don't know why I would need this, + +00:19:59.480 --> 00:20:01.079 +this is an English presentation, + +00:20:01.080 --> 00:20:03.039 +but just to show you what you can do, + +00:20:03.040 --> 00:20:09.359 +if I go back here, and I go to the beginning of the presentation, + +00:20:09.360 --> 00:20:11.171 +and now what... + +00:20:11.172 --> 00:20:12.940 +[Ihor]: I don't think you're showing anything + +00:20:12.941 --> 00:20:18.479 +[Pedro]: Oh, thank you. + +00:20:18.480 --> 00:20:21.399 +Okay, this is the presentation, right? + +00:20:21.400 --> 00:20:23.540 +So what I'm going to do is, I'm going to go back + +00:20:23.541 --> 00:20:31.200 +and I'm going to show the full screen. + +00:20:31.201 --> 00:20:32.639 +And in this full screen, + +00:20:32.640 --> 00:20:34.759 +you see the presentation on one side + +00:20:34.760 --> 00:20:40.599 +and you see Emacs on the other side. Oh, still nothing. + +00:20:40.600 --> 00:20:44.319 +Yeah, we're not seeing your screen at the moment, sorry. + +00:20:44.320 --> 00:20:47.719 +Oh, thank you. Thank you for that. + +00:20:47.720 --> 00:20:52.879 +Now it's starting to come. Okay. Yay! Fine. + +00:20:52.880 --> 00:21:00.399 +So this presentation, I've done it with Lua LaTeX, + +00:21:00.400 --> 00:21:06.439 +and what I add here is fontspec and English language. + +00:21:06.440 --> 00:21:10.240 +Just to show you, but with the same configuration, + +00:21:10.280 --> 00:21:11.839 +with the same fontspec configuration, + +00:21:11.840 --> 00:21:20.473 +but adding Polyglossia. + +00:21:20.474 --> 00:21:23.159 +I just have enough with adding Polyglossia + +00:21:23.160 --> 00:21:28.799 +with the Spanish language to get my dates correctly, + +00:21:28.800 --> 00:21:32.559 +and this is something... I'm going to see the date in English, + +00:21:32.560 --> 00:21:46.719 +and if I now go and recompile it, in a couple of seconds, + +00:21:46.720 --> 00:21:48.999 +you will see that the date is in Spanish. + +00:21:49.000 --> 00:21:53.879 +We are using the same... Which I can show, by the way. + +00:21:53.880 --> 00:21:58.079 +I see just by adding polyglossia here, + +00:21:58.080 --> 00:22:02.339 +I can get my dates in Spanish. + +00:22:02.340 --> 00:22:09.559 +What... I have included the dir-locals + +00:22:09.560 --> 00:22:16.959 +in these lines, but just to discuss it a bit more. + +00:22:16.960 --> 00:22:19.439 +I have it for all the presentations. + +00:22:19.440 --> 00:22:24.319 +I think it was here. No. For the demo, + +00:22:24.320 --> 00:22:28.799 +for the presentations I use for Emacs conferences, + +00:22:28.800 --> 00:22:33.959 +I have it, and it's something like this. + +00:22:33.960 --> 00:22:37.359 +Actually, you don't need a fallback + +00:22:37.360 --> 00:22:40.107 +for the main font here + +00:22:40.108 --> 00:22:44.607 +because the presentations are done with the sans font, + +00:22:44.608 --> 00:22:46.559 +so the only thing that I would really need + +00:22:46.560 --> 00:22:48.199 +would be something like this. + +00:22:48.200 --> 00:22:53.919 +This can be commented, and the same happens here + +00:22:53.920 --> 00:22:57.474 +with the mono. This can be also commented. + +NOTE Demo: Emoji + +00:22:57.475 --> 00:23:00.399 +The only thing where I would really need + +00:23:00.400 --> 00:23:02.119 +a fallback font is here, + +00:23:02.120 --> 00:23:04.319 +and what this is telling me is that + +00:23:04.320 --> 00:23:07.079 +you have a fallback for the emoji, + +00:23:07.080 --> 00:23:09.799 +for the emoji script, + +00:23:09.800 --> 00:23:14.740 +and you need to use the Apple Color Emoji font + +00:23:14.741 --> 00:23:15.399 +with a modifier, + +00:23:15.400 --> 00:23:18.759 +which in this case is that you need + +00:23:18.760 --> 00:23:22.874 +to have the Harfbuzz renderer. + +00:23:22.875 --> 00:23:24.599 +That's the only thing that you really need. + +00:23:24.600 --> 00:23:26.679 +Where do I get all these things from? + +00:23:26.680 --> 00:23:29.039 +All these things I get from the different parts + +00:23:29.040 --> 00:23:33.179 +and from different scripts in the Internet. + +NOTE Demo: Letter + +00:23:33.180 --> 00:23:38.039 +I also have a couple of other things to show. + +00:23:38.040 --> 00:23:42.919 +For example, first of all, I do not need this. + +00:23:42.920 --> 00:23:44.749 +This is a letter that I've been writing this morning + +00:23:44.750 --> 00:23:55.640 +and I'm not using the feature branches at all, + +00:23:55.641 --> 00:23:58.119 +because I just needed a sans font, + +00:23:58.120 --> 00:24:02.119 +and it's going to be a letter that I'm writing in + +00:24:02.120 --> 00:24:06.119 +with the sans font, and the only thing I need + +00:24:06.120 --> 00:24:08.679 +was Spanish polyglossia for the date. + +00:24:08.680 --> 00:24:14.719 +Anyhow, how did... What was my first thing that I did + +00:24:14.720 --> 00:24:19.639 +with the back end? Back in I think it was April, + +00:24:19.640 --> 00:24:23.079 +we had a... this comes from the mailing list, + +00:24:23.080 --> 00:24:26.759 +we had someone who had this problem right, + +00:24:26.760 --> 00:24:29.559 +and he wanted to add emojis, + +00:24:29.560 --> 00:24:33.039 +and he had problems with the verbatim font, + +00:24:33.040 --> 00:24:35.279 +and that's how everything got started. + +00:24:35.280 --> 00:24:43.859 +If you now go and I get my LaTeX for that running. + +00:24:43.860 --> 00:24:50.559 +Well, I actually, all my LaTeX is supported for that. + +00:24:50.560 --> 00:24:58.119 +And this was what I showed in one of the Emacs, Org Mode meetups. + +00:24:58.120 --> 00:25:00.079 +And there you see that we have the emojis. + +00:25:00.080 --> 00:25:06.879 +We had the fonts for the different things. We had maps. + +00:25:06.880 --> 00:25:13.799 +And you could even go and add scripts + +00:25:13.800 --> 00:25:16.319 +and little passages and different scripts. + +00:25:16.320 --> 00:25:22.359 +And this was done with the same principles that I want. + +00:25:22.360 --> 00:25:25.439 +I have my main font. I have the emojis. + +00:25:25.440 --> 00:25:30.559 +and I want, I have my son's phone and I have the emojis, + +00:25:30.560 --> 00:25:32.959 +the Han for Japanese and the Kana for Japanese, + +00:25:32.960 --> 00:25:36.799 +so that these characters here, + +00:25:36.800 --> 00:25:40.679 +both in the sons and in the serif passages + +00:25:40.680 --> 00:25:44.399 +are included correctly in the PDF. + +NOTE Demo: Side by side + +00:25:44.400 --> 00:25:49.999 +And a third thing of what you can do... + +00:25:50.000 --> 00:25:53.439 +I've also shown this, so this is more + +00:25:53.440 --> 00:25:55.799 +for people who have not seen it. + +00:25:55.800 --> 00:26:01.399 +This is a side-by-side passage of... + +00:26:01.400 --> 00:26:04.919 +well, actually, the beginning of the analysis by Xenophon + +00:26:04.920 --> 00:26:12.919 +both in in Greek and in German, with some comments. + +00:26:12.920 --> 00:26:18.679 +And if I go... This is done with Polyglossia. + +00:26:18.680 --> 00:26:24.240 +If I go once again and produce + +00:26:24.241 --> 00:26:37.999 +the PDF for this... Just a second... + +00:26:38.000 --> 00:26:41.119 +Come on. There you are. You get this. + +00:26:41.120 --> 00:26:46.399 +And there you see different fonts. + +00:26:46.400 --> 00:26:48.239 +Which fonts am I using for this? + +00:26:48.240 --> 00:26:53.879 +I'm using for the main font for me is FreeSerif. + +00:26:53.880 --> 00:27:01.479 +This listing is produced with DejaVu Sans Mono. + +00:27:01.480 --> 00:27:12.899 +And using Polyglossia here, I'm able to go and define + +00:27:12.900 --> 00:27:15.799 +the Greek polyton for the variant, + +00:27:15.800 --> 00:27:18.799 +for the serif variant with the Noto Serif font, + +00:27:18.800 --> 00:27:26.199 +just to differentiate it from the German text. + +00:27:26.200 --> 00:27:30.279 +And nice thing is that both in the German text + +00:27:30.280 --> 00:27:37.359 +you see for example here, and with the Greek text, + +00:27:37.360 --> 00:27:40.879 +everything is scaled to match + +00:27:40.880 --> 00:27:44.119 +the lower case of the main font, which is FreeSerif. + +00:27:44.120 --> 00:27:45.879 +So that everything looks + +00:27:45.880 --> 00:27:49.359 +extremely uniform and nice to read. + +00:27:49.360 --> 00:27:53.759 +So that's what you want to do. + +00:27:53.760 --> 00:27:56.519 +That's what you can do with this. + +00:27:56.520 --> 00:28:12.599 +Just a couple of final words on this. + +NOTE Thanks + +00:28:12.600 --> 00:28:16.839 +I want to thank once again Juan Manuel Macias and Jing Huang + +00:28:16.840 --> 00:28:19.919 +for what they have shared. + +00:28:19.920 --> 00:28:24.079 +And I also want to thank everybody + +00:28:24.080 --> 00:28:26.479 +for productive contributions to the discussion. + +00:28:26.480 --> 00:28:32.159 +I'm saying this because I think I need a longer rest + +00:28:32.160 --> 00:28:37.039 +and I'm going to be leaving + +00:28:37.040 --> 00:28:39.607 +the feature font untouched for a couple of months + +00:28:39.608 --> 00:28:42.220 +so that people can take... the feature branch + +00:28:42.221 --> 00:28:43.519 +untouched for a couple of months + +00:28:43.520 --> 00:28:47.599 +to see if people want to use it, and how they want to use it, + +00:28:47.600 --> 00:28:49.919 +and then maybe in the future, we can discuss + +00:28:49.920 --> 00:28:52.559 +if we want to integrate it or not, + +00:28:52.560 --> 00:29:24.839 +or if people need it and all that. Now questions, comments? + +00:29:24.840 --> 00:29:39.240 +[Ihor]: I think there was one question on Etherpad for... + +00:29:39.241 --> 00:29:47.119 +[Pedro]: Beautiful. I think that goes beyond fonts right. + +NOTE Q: What about video (mp4) support for ox-latex? + +00:29:47.120 --> 00:29:52.839 +Someone is asking what about how is about video + +00:29:52.840 --> 00:29:56.319 +mainly MP4 support on ox-latex. + +00:29:56.320 --> 00:29:58.799 +"I started the presentations with many videos. + +00:29:58.800 --> 00:30:14.739 +This is something that really pushed me back using ox-latex." + +00:30:14.740 --> 00:30:18.799 +What I would say to this is, I mean this goes beyond + +00:30:18.800 --> 00:30:24.319 +what we're discussing here with fonts. + +00:30:24.320 --> 00:30:29.319 +I would advise you to go and get the same + +00:30:29.320 --> 00:30:35.239 +or have the same thing that I did, + +00:30:35.240 --> 00:30:42.279 +which was, first of all, try to write it in LaTeX, + +00:30:42.280 --> 00:30:49.599 +and then, once you have the minimal working examples, + +00:30:49.600 --> 00:30:53.159 +you can get the LaTeX parts + +00:30:53.160 --> 00:31:00.319 +integrated into your own presentation. + +00:31:00.320 --> 00:31:01.319 +That's what I've been doing. + +00:31:01.320 --> 00:31:04.519 +By the way, I still do it, for example, not in this, + +00:31:04.520 --> 00:31:06.079 +but for my lectures, + +00:31:06.080 --> 00:31:09.119 +I have a lot of... I'm using a lot of ticks + +00:31:09.120 --> 00:31:12.479 +to do graphs and animated graphs. + +00:31:12.480 --> 00:31:18.319 +And that's `#+begin_export latex` `#+end_export` LaTeX. + +00:31:18.320 --> 00:31:24.279 +That's what I'm doing. + +00:31:24.280 --> 00:31:27.274 +[Ihor]: Videos are generally a bit tricky because you cannot... + +00:31:27.275 --> 00:31:31.119 +Not every viewer will play them. + +00:31:31.120 --> 00:31:35.119 +so I think there is something called pdfpc that can, + +00:31:35.120 --> 00:31:37.399 +this provides a LaTeX package + +00:31:37.400 --> 00:31:39.079 +where you can include videos, + +00:31:39.080 --> 00:31:44.399 +and then they can be played through that specific program. + +00:31:44.400 --> 00:31:46.239 +And JavaScript embedding, + +00:31:46.240 --> 00:31:49.999 +that can only be done through Acrobat Reader, + +00:31:50.000 --> 00:31:54.519 +which is like also finicky. Sure, yes. + +00:31:54.520 --> 00:32:03.999 +[Pedro]: As you said, there are many things that need to be changed. + +00:32:04.000 --> 00:32:07.199 +But I mean it's always a thing of taking it + +00:32:07.200 --> 00:32:11.359 +and trying to see what you can do + +00:32:11.360 --> 00:32:13.319 +and what the specifics are. + +00:32:13.320 --> 00:32:17.079 +Maybe this can be done with Acrobat + +00:32:17.080 --> 00:32:23.959 +and with a couple of extra packages and who knows. + +00:32:23.960 --> 00:32:26.359 +And you can always keep it as as LaTeX + +00:32:26.360 --> 00:32:34.599 +as fragments inside Org, I think. Any other questions? |