Clear completion in completion() call before filling it with data

Because triggering completion at the same cursor position adds the same data again

helix-term/src/commands.rs

@@ -3622,6 +3622,18 @@ fn remove_primary_selection(cx: &mut Context) {
 }
 
 pub fn completion(cx: &mut Context) {
+    // TODO completion starts to get ugly...
+    // maybe think about something like completion provider and separate completion-state into helix-view?
+    let clear_completion = async move {
+        let call: job::Callback =
+            Box::new(move |editor: &mut Editor, compositor: &mut Compositor| {
+                let ui = compositor.find::<ui::EditorView>().unwrap();
+                ui.clear_completion(editor);
+            });
+        Ok(call)
+    };
+    cx.jobs.callback(clear_completion);
+
     use helix_lsp::{lsp, util::pos_to_lsp_pos};
 
     let (view, doc) = current!(cx.editor);