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Text Editors

History of text editors

  • ed
  • vi
  • emacs
  • vim
  • pico -> nano *(for novice users)
  • neovim

ed

  • developed by: Ken Thompson
  • line oriented text editor
  • it is the old days editor
  • it can use regex for replacements

vi

  • developed by: Bill Joy
  • screen oriented text editor
  • has mainly three mode to work with - command, insert, visual

emacs

nano

  • pico -> nano
  • simple text editor, with keybinds for saving, quitting.

vim

  • vi -> vim
  • vim - vi improved

neovim

  • vim -> neovim
  • adds more features to vim but has same vim core functionality
  • configuration can be done in lua langauge
  • introduces the rpc (remote procedural calls), and the run asynchronously
  • you can use lsp (languagge server protocol) in neovim

ed - editor

  • [ADDRESS[,ADDRESS]]COMMAND[PARAMETERS]
  • command mode
  • insert mode
  • ! - run external command
  • m - move
  • n - show line number and line data
  • p - print, l - list, n - enumerate
  • e - edit, E - edit (unwritten changes are discarded), f, r, w - takes optional FILE parameter
  • a - append, c - change, d - delete
  • g/RE/command-list
  • G/RE - interactive g
  • h - print explanation of the last error
  • H - toggle error explanations

commands

  • P - show prompt
  • p - print current line
  • , p - print all lines in buffer
  • a - append i - insert c - change
  • f [filename] - save line into filename
  • w - write data into file
  • . - to stop editing
  • q - quit

Regular Expression

  • pattern used for selecting text.
  • g/STRING/
  • null RE is last regular expression

atom

free and open source text editor.

  • have packages
    • have core packages also
  • to check which key bind is for what use ctrl+.

vim

  • edit in visual block After selecting a block of text, press Shift+i or capital I. Lowercase i will not work. Then type the things you want and finally to apply it to all lines, press Esc twice.

neovim

another text-editor built upon vim

neovide

  • a gui client with animations of cursor

configuration

  • can be done in lua
  • can be also done in vimrc

lua

  • it is supported by something called packer
  • nvim +Packersync updates the packer packages
nvchad
  • simple config files in lua for neovim

structure of the files

~
├── init.lua
│
├── lua
│   ├── colors //for color setting
│   │   ├── highlights.lua
│   │   └── init.lua (i)
│   │
│   ├── core
│   │   ├── init.lua
│   │   ├── autocmds.lua
│   │   ├── custom.lua (i)
│   │   ├── default_config.lua
│   │   ├── hooks.lua (i)
│   │   ├── mappings.lua
│   │   ├── options.lua
│   │   └── utils.lua (i)
|   |
│   ├── custom
│   │   ├── example_chadrc.lua
│   │   ├── example_init.lua
│   │
│   ├── plugins
│   │    ├── init.lua
│   │    ├── packerInit.lua
│   │    └── configs
│   │        ├── bufferline.lua
│   │        ├── others.lua
│   │        └── <many more plugin configs>

(i) - too complex code

plugins

  • lspservers
  • linting

emacs

  • most popular version - gnu emacs or valina emacs - not configured

  • to use it you have to configure it

  • doom emacs - comes configured, suppor evil keybinds

  • select font fc-list :spacing=mono family style | sort | less
  • https://emacsthemes.com/ - get themes here

playlist

some keybinds

  • space + . - open file you want to edit
  • space + p + p - open projects

tree structure of doom emacs

  • init.el - this contains the setting for which package or enable (which comes with doom emacs), you can enable many settings in it, like fororg mode if you will enable +pretty flag then it will install a package, called org.superstar for you.
  • config.el - this contains the datails about the package which you enable in the init.el package like the font, theme settings, also the dashboard setting, you can change the logo to whatever you want
  • pacakage.el - finally if some package you want to use is not peresent in the doom, you can install it here

after changing the init.el don't forget to doom sync.

  • S-f-p - open private configuration files

keybinds

  • S f . - open a file
  • S . - open a file

managing project in emacs - projectile

  • tell projectile to index our projects - projectile-discover-projects-in-directory

  • S-p-p - show all the projects

  • S-o-p - toogle treemax

  • S-o-o-e - open eshell

  • S-f-r - open recent files
  • S-f-R - open recent files in the project

dired directory

  • - - up a directory
  • enter - return a directory
  • + - create a directory
  • x delete a directory
  • o - sort by name and date
  • O change the owner of the file
  • t - switch between file and directory