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<C-key> commands in Vim

• <C-a> Increment the number under cursor

• <C-x> Decrement the number under cursor

• <C-r> Redo (undo your undo)

Vim's built-in completion

• <C-n> Next match

• <C-p> Previous match

• <C-y> Yank the currently selected completion item and insert it into the text.

• <C-e> Exit the completion menu without inserting anything.

Vim's page navigation

• <C-f> Forward, scroll down one full screen

• <C-b> Backward, scroll up one full screen

• <C-d> Down, scroll down half a screen

• <C-u> Up, scroll up half a screen

Typing Unicode arrows

1. Vim built-in: digraphs (easiest inside Vim)

   In Insert mode, type <C-k>, then arraw-like symblos. Then you will get real Unicode arrow.

   e.g. <C-k>=> = ⇒, <C-k>-> = →

2. System-wide: Linux compose key (works everywhere: terminal, browser, etc.)

   1. First enable compose key (in Settings → Keyboard → Compose Key)

   2. Then:

      • Compose + - + > → →

      • Compose + < + - → ←