redgifs: single-word queries that are creator names go to the creator

src/providers/redgifs.rs

@@ -560,6 +560,24 @@ impl Provider for RedgifsProvider {
 
         let sort = Sort::from_sort_id(&sort);
         let target = Self::pick_target(normalized_query, sort, &options);
+        // A single-word query that is an existing creator name goes to that
+        // creator's gifs (checked against the users endpoint); a creator
+        // without gifs falls back to the keyword search.
+        if let Target::Query(text, _) = &target {
+            if !text.contains(char::is_whitespace) {
+                if let Ok(Some(profile)) = self.fetch_user_profile(text, &options).await {
+                    let creator = Target::Creator(profile.username);
+                    if let Ok(items) = self
+                        .fetch_target_items(creator, page, per_page, &options)
+                        .await
+                    {
+                        if !items.is_empty() {
+                            return items;
+                        }
+                    }
+                }
+            }
+        }
 
         match self.fetch_target_items(target, page, per_page, &options).await {
             Ok(items) => items,