tui: Port ratatui-org/ratatui#1036

helix-tui/src/buffer.rs

@@ -130,22 +130,21 @@ pub struct Buffer {
 
 impl Buffer {
  /// Returns a Buffer with all cells set to the default one
+ #[must_use]
  pub fn empty(area: Rect) -> Buffer {
- let cell: Cell = Default::default();
- Buffer::filled(area, &cell)
+ Buffer::filled(area, &Cell::default())
  }
 
  /// Returns a Buffer with all cells initialized with the attributes of the given Cell
+ #[must_use]
  pub fn filled(area: Rect, cell: &Cell) -> Buffer {
  let size = area.area();
- let mut content = Vec::with_capacity(size);
- for _ in 0..size {
- content.push(cell.clone());
- }
+ let content = vec![cell.clone(); size];
  Buffer { area, content }
  }
 
  /// Returns a Buffer containing the given lines
+ #[must_use]
  pub fn with_lines<S>(lines: Vec<S>) -> Buffer
  where
  S: AsRef<str>,