This emulates the behaviour of the versitile fixup-whitespace Emacs command with extra support for Visual Studio Code's features.

The emacs-fixup-whitespace.fixupWhitespace command deletes all whitespace at, before, and after the cursor. Then, if it finds the cursor not at the start or end of the line, it adds a single space.

• Quickly collapse whitespace around the cursor into a single space, as shown in the demo above

• Multiple cursor support.

  

• Multiple cursors can be on the same line. If they're in the same whitespace region, they collapse.

  

• Selection is preserved.

  

• Use it when joining lines to delete the extra whitespace.

  

You must manually add a key binding for the new command. For example:

    {
      "key": "ctrl+f9",
      "command": "emacs-fixup-whitespace.fixupWhitespace",
      "when": "editorFocus && !editorReadonly"
    }

Please report any bugs.