Fixed a glitch that displayed the previous results when the query field was empty

src/search/query.ts

@@ -36,6 +36,10 @@ export class Query {
     }, [])
   }
 
+  public isEmpty(): boolean {
+    return this.segments.length === 0
+  }
+
   public segmentsToStr(): string {
     return this.segments.map(({ value }) => value).join(' ')
   }

src/search/search-engine.ts

@@ -190,6 +190,10 @@ export class SearchEngine {
     query: Query,
     options?: Partial<{ singleFilePath: string | null }>
   ): Promise<ResultNote[]> {
+    if (query.isEmpty()) {
+      previousResults = []
+      return []
+    }
     // Get the raw results
     let results: SearchResult[]
     if (settings.simpleSearch) {