MIT Missing Semester —— CH02 Vim

Missing semester

Missing semester
MIT Missing Semester —— CH01 Shell
MIT Missing Semester —— CH02 Vim
MIT Missing Semester —— CH03 Data Wrangling
MIT Missing Semester —— CH04 Command-line Environment
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以下为本人参加学习 MIT-Missing-Semester 课程的笔记记录，若有疏漏错误，望友好指正！

课程网站链接 Eng
课程网站链接 CH

课程 youtube视频

课程中文字幕视频：

• Missing_Semi_中译组 (ch01— ch04)
• 刘黑黑a (已完结，全11讲)

特别感谢由 CS自学指南 提供的资源导航网站与各类解答，非常感谢！

Vim

fundamental

based on Modal

Modal

1. Normal: for moving around a file and making edits (browse and edit)
   i — Insert
   R / shift + r — replace
   v —visual
   shift + v —visual line
   ctrl + v — visual block
   esc — Normal
   : — command line
2. Insert: for inserting text
3. replace: for replacing text
4. selector: for selecting blocks of text
   visual, visual line, visual block
5. command line: for running a command

Basics

cmd

1. :q quit (close window)
2. :w save (“write”)
3. :wq save and quit
4. :e {name of file} open file for editing
5. :ls show open buffers
6. :help {topic} open help
   • :help :w opens help for the :w command
   • :help w opens help for the w movement

Movement — Normal mode

• Basic movement: hjkl (left, down, up, right)

• Words: w (next word), b (beginning of word), e (end of word)

• Lines: 0 (beginning of line), ^ (first non-blank character), $ (end of line)

• Screen: H (top of screen), M (middle of screen), L (bottom of screen)

• Scroll: Ctrl-u (up), Ctrl-d (down)

• File: gg (beginning of file), G (end of file)

• Line numbers: :{number}<CR> or {number}G (line {number})

• Misc: % (corresponding item)

• Find:

  f{character}: find {character} forward

  t{character}: to {character} forward

  F{character}: find {character} backward

  T{character}: to {character} backward

  • , / ; for navigating matches

• Search: /{regex}, n / N for navigating matches

Selection — Visual mode

• Visual: v
• Visual Line: V
• Visual Block: Ctrl-v

Can use movement keys to make selection.

Edits

Everything that you used to do with the mouse, you now do with the keyboard using editing commands that compose with movement commands. Here’s where Vim’s interface starts to look like a programming language. Vim’s editing commands are also called “verbs”, because verbs act on nouns.

• i: enter Insert mode
  • but for manipulating/deleting text, want to use something more than backspace
• o / O insert line below / above
  open a new line and enter the Insert mode
• d{motion}: delete {motion}
  • dw is delete word
    d$ is delete to end of line
    d0 is delete to beginning of line
• c{motion}: change {motion}
  • cw is change word
  • like d{motion} followed by i
• x delete character (= dl)
• s substitute character (= cl)
• Visual mode + manipulation
  • select text, d to delete it or c to change it
• u to undo, <C-r> to redo
• y to copy / “yank” (some other commands like d also copy)
• p to paste
• Lots more to learn: e.g. ~ flips the case of a character

Counts

You can combine nouns and verbs with a count, which will perform a given action a number of times.

• 3w move 3 words forward

• 5j move 5 lines down

• 7dw delete 7 words

Modifiers

You can use modifiers to change the meaning of a noun. Some modifiers are i, which means “inner” or “inside”, and a, which means “around”.

• ci( change the contents inside the current pair of parentheses
• ci[ change the contents inside the current pair of square brackets
• da' delete a single-quoted string, including the surrounding single quotes

本篇笔记后半部分摘自课程网站本节课讲义