grid progress display

src/main.rs

@@ -378,6 +378,15 @@ impl Sudoku {
 			}
 
 			if self.grid_display {
+				if !self.debug_display {
+					let height = self.size + self.square_size + 2;
+					print!("\x1b[{}A", height);
+					for _ in 0..height {
+						println!("{}"," ".repeat((self.size + self.square_size - 1)*2 + 5));
+					}
+					println!();
+					print!("\x1b[{}A", height);
+				}
 				self.display(ui::DisplayMode::Full);			
 			}
 			
@@ -404,7 +413,9 @@ impl Sudoku {
 	    }
 	    let elapsed = now.elapsed();
 	    println!("# finished in {} propagations ({} forced collapse), {:.2?} ({:.2?}/propagation)", propagation_counter, collapse_counter, elapsed, elapsed/(propagation_counter as u32));
+		if !self.grid_display || self.debug_display {
 			self.display(ui::DisplayMode::Full);
+		}
 		Ok(())
 	}