Add `ui.gutter.selected` option for themes (#3303)

* add `ui.gutter.selected`

* add `ui.gutter`, `ui.gutter.selected` to docs

1 files changed, 7 insertions, 0 deletions

diff --git a/helix-term/src/ui/editor.rs b/helix-term/src/ui/editor.rs
index 7cb29c3b..0269d804 100644
--- a/helix-term/src/ui/editor.rs
+++ b/helix-term/src/ui/editor.rs
@@ -696,6 +696,7 @@ impl EditorView {
         let mut offset = 0;
 
         let gutter_style = theme.get("ui.gutter");
+        let gutter_selected_style = theme.get("ui.gutter.selected");
 
         // avoid lots of small allocations by reusing a text buffer for each line
         let mut text = String::with_capacity(8);
@@ -708,6 +709,12 @@ impl EditorView {
                 let x = viewport.x + offset;
                 let y = viewport.y + i as u16;
 
+                let gutter_style = if selected {
+                    gutter_selected_style
+                } else {
+                    gutter_style
+                };
+
                 if let Some(style) = gutter(line, selected, &mut text) {
                     surface.set_stringn(x, y, &text, *width, gutter_style.patch(style));
                 } else {