Strip qotes from string to be tokenized

Strip quotes to prevent tokenizer from trying to emit STRING tokens because we want to interpret numbers inside strings. This solves an EOF error trying to double click a line with opening or closing triple quotes as well.

spyder/widgets/mixins.py

@@ -1511,6 +1511,12 @@ def mouseDoubleClickEvent(self, event):
         pos = block.position()
         pos_in_block = cursor.positionInBlock()
 
+        # Strip quotes to prevent tokenizer from trying to emit STRING tokens
+        #   because we want to interpret numbers inside strings. This solves
+        #   an EOF error trying to double click a line with opening or closing
+        #   triple quotes as well.
+        text = text.replace('"', ' ').replace("'", ' ')
+
         for t_type, _, start, end, _ in generate_tokens(StringIO(text).read):
             if t_type == NUMBER and start[1] <= pos_in_block <= end[1]:
                 cursor.setPosition(pos + start[1])