From a8b0980897ecd99ef6d0fe2efd2b5f0e28058d06 Mon Sep 17 00:00:00 2001
From: Leonard Hecker <leonard@hecker.io>
Date: Sun, 13 Apr 2025 03:26:10 +0200
Subject: [PATCH] Fix selection highlight at the end of the document

---
 src/buffer.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/buffer.rs b/src/buffer.rs
index 128954e..f4b0966 100644
--- a/src/buffer.rs
+++ b/src/buffer.rs
@@ -1634,7 +1634,12 @@ impl TextBuffer {
             );
 
             // Draw the selection on this line, if any.
-            if selection_beg <= cursor_end.logical_pos && selection_end >= cursor_beg.logical_pos {
+            // FYI: `cursor_beg.visual_pos.y == visual_line` is necessary as the `visual_line`
+            // may be past the end of the document, and so it may not receive a highlight.
+            if cursor_beg.visual_pos.y == visual_line
+                && selection_beg <= cursor_end.logical_pos
+                && selection_end >= cursor_beg.logical_pos
+            {
                 // By default, we assume the entire line is selected.
                 let mut beg = 0;
                 let mut end = COORD_TYPE_SAFE_MAX;