Allow selection and alt click to live conflict free

src/SelectionManager.ts

@@ -11,6 +11,7 @@ import { CircularList } from './utils/CircularList';
 import { EventEmitter } from './EventEmitter';
 import { SelectionModel } from './SelectionModel';
 import { CHAR_DATA_WIDTH_INDEX, CHAR_DATA_CHAR_INDEX } from './Buffer';
+import { AltClickHandler } from './handlers/AltClickHandler';
 
 /**
  * The number of pixels the mouse needs to be above or below the viewport in
@@ -96,6 +97,8 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   private _mouseUpListener: EventListener;
   private _trimListener: (...args: any[]) => void;
 
+  private _mouseDownTimeStamp: number;
+
   constructor(
     private _terminal: ITerminal,
     private _charMeasure: CharMeasure
@@ -317,6 +320,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    * @param event The mousedown event.
    */
   public onMouseDown(event: MouseEvent): void {
+    this._mouseDownTimeStamp = event.timeStamp;
     // If we have selection, we want the context menu on right click even if the
     // terminal is in mouse mode.
     if (event.button === 2 && this.hasSelection) {
@@ -536,10 +540,15 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    * @param event The mouseup event.
    */
   private _onMouseUp(event: MouseEvent): void {
+    let timeElapsed = event.timeStamp - this._mouseDownTimeStamp;
+
     this._removeMouseDownListeners();
 
-    if (this.hasSelection)
+    if (this.selectionText.length <= 1 && timeElapsed < 500) {
+      (new AltClickHandler(event, this._terminal)).move();
+    } else if (this.hasSelection) {
       this._terminal.emit('selection');
+    }
   }
 
   private _onBufferActivate(e: {activeBuffer: IBuffer, inactiveBuffer: IBuffer}): void {

src/Terminal.ts

@@ -30,7 +30,6 @@ import { CompositionHelper } from './CompositionHelper';
 import { EventEmitter } from './EventEmitter';
 import { Viewport } from './Viewport';
 import { rightClickHandler, moveTextAreaUnderMouseCursor, pasteHandler, copyHandler } from './handlers/Clipboard';
-import { AltClickHandler } from './handlers/AltClickHandler';
 import { CircularList } from './utils/CircularList';
 import { C0 } from './EscapeSequences';
 import { InputHandler } from './InputHandler';
@@ -953,7 +952,6 @@ export class Terminal extends EventEmitter implements ITerminal, IInputHandlingT
       // if the selection manager is having selection forced (ie. a modifier is
       // held).
       if (!this.mouseEvents || this.selectionManager.shouldForceSelection(ev)) {
-        (new AltClickHandler(ev, this)).move();
         return;
       }