Do not select empty lines at end of grid, fixes #92

src/terminal.rs

@@ -505,8 +505,15 @@ impl Terminal {
             let mut term = self.term.lock();
             let grid = term.grid();
             let start = Point::new(Line(-(grid.history_size() as i32)), Column(0));
+            let mut end_line = grid.bottommost_line();
+            while end_line.0 > 0 {
+                if ! grid[end_line].is_clear() {
+                    break;
+                }
+                end_line.0 -= 1;
+            }
             let end = Point::new(
-                Line(grid.screen_lines() as i32 - 1),
+                end_line,
                 Column(grid.columns() - 1),
             );
             let mut selection = Selection::new(SelectionType::Lines, start, Side::Left);