Use an enum to represent yank decision during deletion of a selection (…

…helix-editor#10148)

helix-term/src/commands.rs

@@ -2617,24 +2617,29 @@ fn selection_is_linewise(selection: &Selection, text: &Rope) -> bool {
     })
 }
 
-fn delete_selection_impl(cx: &mut Context, op: Operation, yank: bool) {
+enum YankAction {
+    Yank,
+    NoYank,
+}
+
+fn delete_selection_impl(cx: &mut Context, op: Operation, yank: YankAction) {
     let (view, doc) = current!(cx.editor);
 
     let selection = doc.selection(view.id);
     let only_whole_lines = selection_is_linewise(selection, doc.text());
 
-    if cx.register != Some('_') && yank {
-        // first yank the selection
+    if cx.register != Some('_') && matches!(yank, YankAction::Yank) {
+        // yank the selection
         let text = doc.text().slice(..);
         let values: Vec<String> = selection.fragments(text).map(Cow::into_owned).collect();
         let reg_name = cx.register.unwrap_or('"');
         if let Err(err) = cx.editor.registers.write(reg_name, values) {
             cx.editor.set_error(err.to_string());
             return;
         }
-    };
+    }
 
-    // then delete
+    // delete the selection
     let transaction =
         Transaction::delete_by_selection(doc.text(), selection, |range| (range.from(), range.to()));
     doc.apply(&transaction, view.id);
@@ -2700,19 +2705,19 @@ fn delete_by_selection_insert_mode(
 }
 
 fn delete_selection(cx: &mut Context) {
-    delete_selection_impl(cx, Operation::Delete, true);
+    delete_selection_impl(cx, Operation::Delete, YankAction::Yank);
 }
 
 fn delete_selection_noyank(cx: &mut Context) {
-    delete_selection_impl(cx, Operation::Delete, false);
+    delete_selection_impl(cx, Operation::Delete, YankAction::NoYank);
 }
 
 fn change_selection(cx: &mut Context) {
-    delete_selection_impl(cx, Operation::Change, true);
+    delete_selection_impl(cx, Operation::Change, YankAction::Yank);
 }
 
 fn change_selection_noyank(cx: &mut Context) {
-    delete_selection_impl(cx, Operation::Change, false);
+    delete_selection_impl(cx, Operation::Change, YankAction::NoYank);
 }
 
 fn collapse_selection(cx: &mut Context) {