fix: separate gutter bars visually from line numbers

src/tui.rs

@@ -1788,7 +1788,7 @@ fn draw_document(
                     let mut spans = vec![Span::styled(format!("{number:>digits$}"), style)];
                     if marker_gutter {
                         let marker = match (editor.gutter_style(), change) {
-                            (crate::gutter::GutterStyle::Bar, Some(_)) => "▌",
+                            (crate::gutter::GutterStyle::Bar, Some(_)) => "▐",
                             (_, Some(crate::gutter::Change::Added)) => "+",
                             (_, Some(crate::gutter::Change::Removed)) => "-",
                             (_, Some(crate::gutter::Change::Modified)) => "~",
@@ -14240,7 +14240,7 @@ end
             ],
         ));
         for (mode, marker) in [
-            (GutterStyle::Bar, "▌"),
+            (GutterStyle::Bar, "▐"),
             (GutterStyle::Symbols, "+"),
             (GutterStyle::LineNumbers, ""),
             (GutterStyle::None, ""),