once event handler called twice

Under some circumstances, an event handler set up with once can still be called twice.

See this example: http://playground-leaflet.rhcloud.com/vuv/edit?html,js,output

When the flyTo animation starts, pan the map with the mouse, and watch the log output: the moveend handler, set up with once is actually called twice.

[jasonoverland]

Nevermind my previous comment, I was encountering something entirely different. Angular-leaflet-directive clones the map layer and the handler was being removed from the original layer, not the clone.

[johnd0e]

describe('Events', function () {
	// ...
	describe('#once', function () {
		// ...
		it('do not stuck in loop when the event is fired again in handler', function () { // #3979 #5376
			var obj = new L.Evented();
			obj.once('test', function () {
				this.fire('test');
			});
			obj.fire('test');
		});
		// ...
	});
	// ...
});