kak

Kakoune is a mode-based code editor implementing the "multiple selections" paradigm. Data can be selected and simultaneously edited in different locations, using multiple selections; users can also connect to the same session for collaborative editing. More information: https://kakoune.org.

• Open a file and enter normal mode, to execute commands:
  kak {{path/to/file}}
• Enter insert mode from normal mode, to write text into the file:
  i
• Escape insert mode, to go back to normal mode:
  <Escape>
• Replace all instances of "foo" in the current file with "bar":
  %s{{foo}}<Enter>c{{bar}}<Escape>
• Unselect all secondary selections, and keep only the main one:
  <Space>
• Search for numbers and select the first two:
  /\d+<Enter>N
• Insert the contents of a file:
  !cat {{path/to/file}}<Enter>
• Save the current file:
  :w<Enter>