Fix line number rendering.

helix-term/src/editor.rs

@@ -221,7 +221,7 @@ impl Editor {
                 let style: Style = view.theme.get("ui.linenr");
                 for (i, line) in (view.first_line..(last_line as u16)).enumerate() {
                     self.surface
-                        .set_stringn(0, line, format!("{:>5}", i + 1), 5, style);
+                        .set_stringn(0, i as u16, format!("{:>5}", line + 1), 5, style);
                     // lavender
                 }
 

helix-view/src/view.rs

@@ -53,7 +53,7 @@ impl View {
     #[inline]
     pub fn last_line(&self, viewport: Rect) -> usize {
         std::cmp::min(
-            (self.first_line + viewport.height - 1) as usize,
+            (self.first_line + viewport.height) as usize,
             self.state.doc().len_lines() - 1,
         )
     }