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Currently Playing: Xah Talk Show Ep739 emacs lisp, write a lookup web command

Video Summary (Generated by AI, Edited by Human.) Intro to the "lookup web" command (0:00-1:07): Emacs Lisp command that look up words or selections on the web. Demonstration of existing lookup Wikipedia command (1:07-2:24) Check Dependency on browse-url library (2:52-4:03) Checking if browse-url is loaded (4:04-9:31). He confirms it is loaded by default. Overview of xah-lookup package (11:09-12:26) various lookup functions for different online services like Google, Yandex, Baidu, Twitter, Google Maps, YouTube, Wikipedia, and the Internet Archive. Demo of Internet Archive lookup (12:26-19:04): demo the "lookup Internet Archive" command, showing how to retrieve older versions of websites. He uses his own websites (xahlee.info and xahlee.org) as examples, showcasing their appearance from 2010 and 2000, respectively. Demo of lookup synonyms (20:10-21:03). Discuss code dependency and duplication (21:10-25:48): Dependencies make code harder to share and use, preferring to duplicate code if it means making functions independent and self-contained. Draws parallels to how applications bundle entire programming languages like Python. Rewriting lookup-Wikipedia from scratch (25:49-48:51). Using EWW (Emacs Web Wow) browser (49:50-55:07): demo how to modify the rewritten command to use Emacs's built-in web browser EWW. Handling text selections (multiple words) (54:12-58:55): mod the code to handle text selections (regions) so that commands like "lookup Wikipedia" can search for multiple words (e.g., "group theory"). Call to donation (58:56-1:00:10). • Unicode discussion (27:13 - 28:19). • Convention of using unicode 🔍 📦 📜 📺 in title. (28:22 - 29:19) • Lizard 🦎 for ex-trans. (30:01 - 35:00) • Dragon 🐉 as western dragon vs chinese dragon. • Ancient symbols ⚕ ☤ ⚚ ☘ ⚜ ☥ 🕊 ☮ ✌ snake on a staff (staff of Aesculapius), caduceus, shamrock, fleur-de-lis, and ankh, (34:30 - 35:50). • Printer symbols like daggers (35:53 - 36:27). • Sex symbols ♂ ♀ ⚦ ⚨ ⚩ ⚲ ⚤ ⚢ ⚣ ⚥ (37:50 - 41:29) • Math and Other Symbols: Including box shapes, various brackets (Asian, decorated, exotic), Tibetan, Arabic, Greek, and complex number sets (37:50 - 39:13). • Braille symbols and APL programming language symbols (39:18 - 39:52). Notes at http://xahlee.info/talk_show/xah_talk_show_ep739.html If browser says security error, that is because it auto changes URL from HTTP to HTTPS. It's a way to censor 22 million old websites. Remove the S in HTTPS. Or use brave browser or safari.