About Emacs @ Douban

Transcript

1. M-x about-emacs
2. 1. Emacs is an editor.! 2. Emacs isn’t just an editor.! 3. Actually, Emacs is an IDE
3. “Emacs is the extensible, customizable, self-documenting real-time display editor.” – Emacs Manual
4. “Emacs is the extensible, customizable, self-documenting real-time display editor.” – Emacs Manual
5. - cursor motion - insert & delete - selection - copy & cut & paste - undo & redo - search & replace Basic Editing
6. Basic Motion backward forward char C-b C-f line C-n C-p line beg/end C-a C-e word M-b M-f sentence M-a M-e paragraph M-{ M-} buffer beg/end M-< M->
7. Mark Point
8. set-mark-command C-u C-SPC pop-global-mark C-x C-SPC Mark
9. undo(region) C-_ C-/ undo-only Undo & Redo
10. Programming - syntax highlight - auto indentation - comment
11. TAB tab-always-indent
12. comment-dwim M-; Comment
14. “Emacs is a good operating system, it just needs a decent text editor.” – vi advocates
15. “Extensibility means that the user can add new editing commands or change old ones to fit his editing needs, while he is editing.” – Richard Stallman
16. “EMACS is written in a modular fashion, composed of many separate and independent functions. The user extends EMACS by adding or replacing functions, writing their definitions in the same language that was used to write the original EMACS system.” – Richard Stallman
17. “Python is significantly better than Emacs Lisp, so you should use Sublime Text.”
18. “Having an extension language which lets you define functions and bind them to keys does not make you "Emacs". The big idea of Emacs (which of course it got from the Lisp machines) is self-hosting: Emacs is written in Emacs Lisp. There is no separate extension language.” – @deng on HN
19. Redefining Self-inserting Characters - auto-fill-mode - electric-layout-mode - operator-mode - key-chord-mode
20. Basic Motion backward forward char C-b C-f line C-n C-p line beg/end C-a C-e word M-b M-f sentence M-a M-e paragraph M-{ M-} buffer beg/end M-< M->
21. Operating on Meaningful Units of Text - symbol - function - s-expression
22. forward-symbol backward-symbol subword-mode smartscan M-n / M-p Symbols
23. beginning-of-defun C-M-a end-of-defun C-M-e mark-defun C-M-h indent-defun Functions
24. S-expression atom (a list of atom) (a list of (list)) “a list of words” <p>a list of words</p> print(a, list, of, arguments) def hello() print “hello world!\n” end
25. (* (+ 1 2) 3) 3 * 2 1 +
26. forward-sexp C-M-f backward-sexp C-M-b beginning-of-sexp C-M-a end-of-sexp C-M-e down-sexp C-M-d up-sexp C-M-u next-sexp C-M-n previous-sexp C-M-p
27. kill-sexp C-M-k copy-sexp C-M-w join-sexp C-M-j split-sexp C-M-s transpose-sexp C-M-t slurp-sexp C-( C-) barf-sexp C-{ C-} splice-sexp M-<up> M-<down>
28. er/expand-region C-= Expand Region
29. Vim, one editor to rule them all
30. Emacs has got a mode for that!
31. Interactively Do Things - ido - ido-ubiquitous - flx-ido - smex
32. undo-tree-undo C-_ C-/ undo-tree-redo M-_ C-? undo-tree-visualize C-x u Undo Tree
33. 1. Emacs is an editor.! 2. Emacs isn’t just an editor.! 3. Actually, Emacs is an IDE
34. General front end for text based systems. - Email Reader! - IRC Client! - File Manager! - Process Manager! - Terminal Emulator! - Documentation Reader! - Git Client! - and much, much more…
35. Shell - shell-mode - eshell-mode - ansi-term
36. dired C-x d dired-jump C-x C-j dired-do-rename R dired-do-copy C dired-do-delete D Dired
37. Git Integration - vc - git-commit-mode - git-rebase-mode - gitconfig-mode - gitignore-mode - git-timemachine - magit - diff-hl
38. projectile-find-file C-c p f projectile-switch-project C-c p p projectile-replace C-c p r projectile-grep C-c p g projectile-regenerate-tags C-c p R projectile-find-tag C-c p j Projectile
39. helm-find-files C-x c C-x C-f helm-buffers-list C-x c C-x C-b helm-do-grep C-x c M-g s helm-show-kill-ring C-x C-j helm-etags-select C-x c e helm-top C-x c t helm-find C-x c / helm-locate C-x c l helm-man-woman C-x c m Helm
40. Demo: Artist
41. With Vim, you do everything inside the terminal; with Emacs, you do everything inside Emacs.
42. Emacs has 338 modes, 2531 commands, 75 packages builtin, and another 2034 available via package.el.
43. We’er using the best Emacs ever.
44. “Customizable means that you can easily alter the behavior of Emacs commands in simple ways.” – Emacs Manual
45. Demo: Emacs, naked
46. No other systems can satisfy your desire for control like Emacs do.
48. Self-documentation system Emacs Lisp Emacs Learning Curve
49. “A complex program is much easier to learn if it can answer questions about how to use it.” – Richard Stallman
50. help-for-help C-h C-h apropos-command C-h a describe-mode C-h m describe-key C-h k find-function-on-key describe-function C-h f find-function describe-variable C-h v find-variable Help
51. info-emacs-manual C-h r help-with-tutorial C-h t view-emacs-FAQ C-h C-f info C-h i describe-bindings C-h b Documentation
52. 1. Emacs is an editor.! 2. Emacs isn’t just an editor.! 3. Actually, Emacs is an IDE
53. Interactive Programming Environment
54. “The idea behind Light Table was that we have like this really long feedback loop in programming, and Microsoft loved it, it's the edit, compile, debug cycle. The truth is that should not be the cycle at all, should be just the edit, that should be the cycle.” – Chris Granger
55. REPL (loop (print (eval (read))))
56. Advanced Programming Support - interactive REPL! - code evaluation! - auto complete! - snippets! - syntax check on the fly! - jump to definition! - find file at point! - documentation look up! - compile! - debug! - refactor
57. Syntax Check - flymake - flycheck
58. Auto Complete - auto-complete - company-mode
59. Lisp - slime - geiser - cider
60. JavaScript - js2-mode - js2-refactor - skewer-mode
61. Python - python.el - anaconda-mode
62. Thanks!