feat(statusline): add option to show total line numbers in file (#3960)

* feat(statusline): add option to show total line numbers in file

* feat(line numbers): add config to doc book

1 files changed, 10 insertions, 0 deletions

diff --git a/helix-term/src/ui/statusline.rs b/helix-term/src/ui/statusline.rs
index 9bbb268f..b0e8ec5d 100644
--- a/helix-term/src/ui/statusline.rs
+++ b/helix-term/src/ui/statusline.rs
@@ -144,6 +144,7 @@ where
         helix_view::editor::StatusLineElement::Selections => render_selections,
         helix_view::editor::StatusLineElement::Position => render_position,
         helix_view::editor::StatusLineElement::PositionPercentage => render_position_percentage,
+        helix_view::editor::StatusLineElement::TotalLineNumbers => render_total_line_numbers,
         helix_view::editor::StatusLineElement::Separator => render_separator,
         helix_view::editor::StatusLineElement::Spacer => render_spacer,
     }
@@ -276,6 +277,15 @@ where
     );
 }
 
+fn render_total_line_numbers<F>(context: &mut RenderContext, write: F)
+where
+    F: Fn(&mut RenderContext, String, Option<Style>) + Copy,
+{
+    let total_line_numbers = context.doc.text().len_lines();
+
+    write(context, format!(" {} ", total_line_numbers), None);
+}
+
 fn render_position_percentage<F>(context: &mut RenderContext, write: F)
 where
     F: Fn(&mut RenderContext, String, Option<Style>) + Copy,