Does anyone know how to turn an vscode editor selection range into a multi cursor selection?
for instance on this line: "out of this line I'd like to select this|" 
Assuming you are working with only a single selection:
const selection = vscode.window.activeTextEditor.selections[0]; const newSelection1 = new vscode.Selection(selection.start, selection.start); const newSelection2 = new vscode.Selection(selection.end, selection.end); vscode.window.activeTextEditor.selections = [newSelection1, newSelection2]; You will get the same result selecting left-to-right as right-to-left.
I made this into an extension: Convert Selection - it works on multiple selections.
Here is the entire code of the extension:
const vscode = require('vscode'); /** * @param {vscode.ExtensionContext} context */ function activate(context) { let disposable = vscode.commands.registerCommand('convert-selection.surround', function () { const editor = vscode.window.activeTextEditor; const selections = editor.selections; const newSelections = []; for (const selection of selections) { const newSelection1 = new vscode.Selection(selection.start, selection.start); const newSelection2 = new vscode.Selection(selection.end, selection.end); newSelections.push(newSelection1, newSelection2); } editor.selections = newSelections; }); context.subscriptions.push(disposable); } exports.activate = activate; 
Convert Selection. Haven't written the readme yet. Default keybinding is Alt+s, command is convert-selection.surround: Surround selection(s) with multi-cursors.You can use the extension Select By v1.10
Execute the command: SelectBy: Create separate cursors for anchor and active position of the selection(s) , selectby.anchorAndActiveSeparate
It will create new cursors for every anchor and active position of all the current selections. Overlapping cursors are eliminated.
