fix cutting and copying between fields

the shortcut keys are handled by webengine on platforms other than
osx, so rather than messing with an event filter we catch the cut and
copy events in js and send a signal back

aqt/editor.py

@@ -646,6 +646,9 @@ to a cloze type first, via Edit>Change Note Type."""))
     def onPaste(self):
         self.web.onPaste()
 
+    def onCutOrCopy(self):
+        self.web.flagAnkiText()
+
     # Advanced menu
     ######################################################################
 
@@ -693,6 +696,7 @@ to a cloze type first, via Edit>Change Note Type."""))
         more=onAdvanced,
         dupes=showDupes,
         paste=onPaste,
+        cutOrCopy=onCutOrCopy,
     )
 
 # Pasting, drag & drop, and keyboard layouts
@@ -715,11 +719,9 @@ class EditorWebView(AnkiWebView):
             self._flagAnkiText()
 
     def onCut(self):
-        self._markInternal = True
         self.triggerPageAction(QWebEnginePage.Cut)
 
     def onCopy(self):
-        self._markInternal = True
         self.triggerPageAction(QWebEnginePage.Copy)
 
     def onPaste(self):
@@ -819,6 +821,10 @@ class EditorWebView(AnkiWebView):
         # add to media and return resulting html link
         return self.editor._addMedia(newpath)
 
+    def flagAnkiText(self):
+        # be ready to adjust when clipboard event fires
+        self._markInternal = True
+
     def _flagAnkiText(self):
         # add a comment in the clipboard html so we can tell text is copied
         # from us and doesn't need to be stripped

web/editor.js

@@ -258,6 +258,11 @@ function wrap(front, back) {
     }
 }
 
+function onCutOrCopy() {
+    pycmd("cutOrCopy");
+    return true;
+}
+
 function setFields(fields, prewrap) {
     var txt = "";
     for (var i = 0; i < fields.length; i++) {
@@ -270,6 +275,7 @@ function setFields(fields, prewrap) {
         txt += "<div id=f{0} onkeydown='onKey();' oninput='checkForEmptyField()' onmouseup='onKey();'".format(i);
         txt += " onfocus='onFocus(this);' onblur='onBlur();' class=field ";
         txt += "ondragover='onDragOver(this);' onpaste='onPaste(this);' ";
+        txt += "oncopy='onCutOrCopy(this);' oncut='onCutOrCopy(this);' ";
         txt += "contentEditable=true class=field>{0}</div>".format(f);
         txt += "</td></tr>";
     }