154 lines
3.8 KiB
Org Mode
154 lines
3.8 KiB
Org Mode
#+TITLE: How to build an editor with Emacs Lisp
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#+SEQ_TODO: TODO(t/!) NEXT(n/!) BLOCKED(b@/!) | DONE(d%) CANCELLED(c@/!) FAILED(f@/!)
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#+TAGS: READER(r) MISC(m)
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#+STARTUP: logdrawer logdone logreschedule indent content align constSI entitiespretty overview
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* DONE Episode 1 - Introduction
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CLOSED: [2022-01-09 Sun 19:03]
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** What is it all about?
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- Create an editor, development environment and Window Manager (yeah window manager) and ...
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- GNU/Emacs is amazing
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- Spread the joy
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- Guide for contributors
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- A guide for people who wants to learn some Lisp
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** The Plan
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- Parallel video series to *How to build a compiler with LLVM and MLIR*
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- Git branches
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- No live coding
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- Start from Emacs and Jump to FG42
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- Feel free to contribute
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** FG42 and a bit of history
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- It's my: + Editor/IDE
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+ Email client + Window Manager
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+ File Manager + Terminal Emulator
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+ IRC client (at some point) + TODO manager
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+ "Office suit" (air qoute) + ....
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- Started on 2010 in a train
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- I'm working on the V3
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- Requirements
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+ Emacs >= 27.1
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- Website: https://fg42.org/
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- Repository: https://devheroes.codes/FG42
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- Website: https://lxsameer.com
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- Email: lxsameer@gnu.org or lxsameer@lxsameer.com
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* DONE Episode 2 - Survive on the first day
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CLOSED: [2022-02-11 Fri 10:28]
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** Why bother?
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** Why GNU/Emacs?
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*** People might say because of
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- Org-mode
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- LSP support
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- Support for many many languages
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- It's lightweight
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- Tons of plugins
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- ...
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*** I'd say
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- Coz it's a lisp environment with an editor attached to it
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- Lisp is the difference + It's super easy to extend/hack emacs
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+ In compare to other editors
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- You can do pretty much whatever your like in ELisp
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- It's like a framework for building an editor
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** FAQ
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*** What is the difference between Doom, Spacemacs, FG42 and ...?
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Different editors based on Emacs
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*** Which one should I use?
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*** How to install Emacs packages?
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** UI Basics & Basic Concepts
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- Window
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- Frame
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- Mode line
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- Buffers
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- Mini buffer/Echo area
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- Point
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- Major mode
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- Minor mode
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** Basic Keybindings
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How to read key bindings? Here is an example =C-x M-e 4=, it means press =x= key while
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holding =Control= and then press =e= key while pressing down =Alt= and finally press =4=.
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- Emacs tutorial =C-h t= (or https://www.gnu.org/software/emacs/tour/)
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- Quit emacs =C-x C-c=
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- Abort =C-g=
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- Get Help =C-h= family + =C-h f=
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+ =C-h v= + =C-h m=
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+ =C-h k= + =C-h a=
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- Run a command (function) =M-x=
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- Visit a file =C-x C-f=
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- Search in Buffer =C-s=
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- Save buffer =C-x C-s=
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- Select region =C-SPC=
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- Copy =M-w=
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- Cut(killing) =C-w=
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- Paste(yanking) =C-y=
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- Kill buffer =C-x k=
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- Switch buffer =C-x b=
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- Undo =C-/=
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- Eval expression =C-x C-e=
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- =describe-mode=
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** Lisp basics
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- Expressions everywhere
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- Code a data structure
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- Almost everything in Lisp evaluates to themselves except:
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+ lists + Symbols
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+ ...
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- Lisp laws:
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1. Everything in Lisp is an expression and evaluation of an expression
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means replacing it with its value
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2. Almost everything in Lisp evaluates to themselves except:
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- Lists
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- Symbols
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- Quotes
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- ...
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-
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3. List evaluation
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* Episode 3 - Lisp Basics
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** FAQ:
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- How to install Emacs? + Just make sure to have *Emacs >= 27.1*
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- What's the routine to use Emacs ?
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+ Don't use Emacs like how you use other Editors. + There is no limits(Almost).
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- How evaluate forms?
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+ *C-x C-e* at the end of any expression and anywhere + ielm
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+ Batch mode
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** So Fare:
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*** Lisp rules:
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1. Lisp is made of Expressions and they evaluate to a value.
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2. All the expression types evaluates to themselves with some exceptions.
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3. List evaluation
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*** We will continue with Lisp basics for few episodes
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** Variables
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- How to define variables and constants
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- Set the value of a variable
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- Global and local scope
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- Lexical bindings vs Dynamic bindings
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+ =-*- lexical-binding: t; -*-=
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** Functions
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- How to define functions
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- vs macros
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- vs special forms
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