Prevent crash

app/src/main/java/eu/faircode/email/StyleHelper.java

@@ -1769,8 +1769,37 @@ public class StyleHelper {
     static void markAsInserted(Editable text, int start, int end) {
         for (InsertedSpan span : text.getSpans(0, text.length(), InsertedSpan.class))
             text.removeSpan(span);
-        if (start >= 0 && start < end && end <= text.length())
-            text.setSpan(new InsertedSpan(), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+        if (start >= 0 && start < end && end <= text.length()) {
+            /*
+                java.lang.IndexOutOfBoundsException: Invalid Context Range: 0, 1 must be in 0, 0
+                    at android.graphics.Paint.getRunCharacterAdvance(Paint.java:3541)
+                    at android.text.TextLine.getRunAdvance(TextLine.java:1274)
+                    at android.text.TextLine.handleText(TextLine.java:1361)
+                    at android.text.TextLine.handleRun(TextLine.java:1640)
+                    at android.text.TextLine.measureRun(TextLine.java:882)
+                    at android.text.TextLine.measure(TextLine.java:604)
+                    at android.text.TextLine.metrics(TextLine.java:494)
+                    at android.text.Layout.getLineExtent(Layout.java:1896)
+                    at android.text.Layout.getLineMax(Layout.java:1843)
+                    at android.text.Layout.getLineRight(Layout.java:1833)
+                    at android.widget.TextView.getCursorAnchorInfo(TextView.java:14517)
+                    at android.widget.Editor$CursorAnchorInfoNotifier.updatePosition(Editor.java:4883)
+                    at android.widget.Editor$PositionListener.onPreDraw(Editor.java:3750)
+                    at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:1176)
+                    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:4158)
+                    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2836)
+                    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:10145)
+                    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1406)
+                    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1415)
+                    at android.view.Choreographer.doCallbacks(Choreographer.java:1015)
+                    at android.view.Choreographer.doFrame(Choreographer.java:945)
+                    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1389)
+                    at android.os.Handler.handleCallback(Handler.java:959)
+            */
+            Pair<Integer, Integer> range = ensureParagraph(text, start, end);
+            if (range != null)
+                text.setSpan(new InsertedSpan(), range.first, range.second, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+        }
     }
 
     static class InsertedSpan implements NoCopySpan {