Clean up previous patch

Author: marijnh

src/edit/CodeMirror.js

@@ -143,9 +143,7 @@ function registerEventHandlers(cm) {
     return dx * dx + dy * dy > 20 * 20
   }
   on(d.scroller, "touchstart", e => {
-    if (clickInGutter(cm, e)) return
-
-    if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e)) {
+    if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) {
       d.input.ensurePolled()
       clearTimeout(touchFinished)
       let now = +new Date

src/edit/mouse_events.js

@@ -326,12 +326,12 @@ function leftButtonSelect(cm, event, start, behavior) {
 // handlers for the corresponding event.
 function gutterEvent(cm, e, type, prevent) {
   let mX, mY
-  if (e.type == "touchstart"){
-      try { mX = e.touches[0].clientX; mY = e.touches[0].clientY }
-      catch(e) { return false }
+  if (e.touches) {
+    mX = e.touches[0].clientX
+    mY = e.touches[0].clientY
   } else {
-      try { mX = e.clientX; mY = e.clientY }
-      catch(e) { return false }
+    try { mX = e.clientX; mY = e.clientY }
+    catch(e) { return false }
   }
   if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false
   if (prevent) e_preventDefault(e)