vscode

•  select a column
• click once on the top position
• alt + shift + keep left click mouse to select a colum
• disable autocompletion in txt files
• ~/Library/Application Support/Code/User/settings.json

    "[plaintext]": {

      "editor.suggest.showSnippets": false,

      "editor.suggest.showWords": false,

      "editor.acceptSuggestionOnCommitCharacter": false,

      "editor.acceptSuggestionOnEnter": "off"

    }

• 
  

codium editor

Codium is like "VS Code" but without Microsoft prorpietary parts.

• select a rectangle on MacOS: 
• set the cursor on the line
• keep pressed "alt ⌥" + "cmd ⌘" and use the down arrows
• edit