Improve keyword search navigation and filter invalid tokens

- keyword search for queries with "-" prefix enter infinite loop
- is the code handling "-" prefix and empty space correctly (ignoring keyword) or it enters infinte loop?

└── apps
    └── editor
        └── src
            └── features
                └── search-files
                    ├── index.ts
                    ├── search-files.ts
                    ├── search-modes
                    │   ├── perform-intelligent-search-mode.ts
                    │   ├── perform-keywords-search-mode.ts
                    │   ├── perform-phrase-search-mode.ts
                    │   └── perform-semantic-search-mode.ts
                    └── utils
                        ├── analyze-files.ts
                        ├── check-matches-condition.ts
                        ├── create-search-regex.ts
                        ├── group-quick-pick-items.ts
                        ├── handle-parent-folder-result.ts
                        ├── map-files-to-quick-pick-items.ts
                        ├── prompt-for-config.ts
                        ├── prompt-for-intelligent-search-results.ts
                        ├── prompt-for-keywords-match-mode.ts
                        ├── prompt-for-keywords-target.ts
                        ├── prompt-for-search-mode.ts
                        ├── prompt-for-search-results.ts
                        ├── prompt-for-search-term.ts
                        ├── prompt-for-shrink-mode.ts
                        ├── search-files-by-intelligent.ts
                        ├── search-files-by-keywords.ts
                        ├── search-files-by-phrase.ts
                        └── search-files-by-semantic.ts

Author: robertpiosik

apps/editor/src/features/search-files/search-modes/perform-keywords-search-mode.ts

@@ -99,7 +99,7 @@ export const perform_keywords_search_mode = async (params: {
       while (true) {
         const keywords = (
           search_term.match(/(?:-?"[^"]*")|(?:-?[^\s,]+)/g) || []
-        ).filter((k) => k.length > 0)
+        ).filter((k) => k.length > 0 && k != '-' && k != '""' && k != '-""')
 
         const positive_keywords = keywords.filter((k) => !k.startsWith('-'))
 
@@ -171,13 +171,21 @@ export const perform_keywords_search_mode = async (params: {
         }
 
         if (is_cancelled) {
+          if (positive_keywords.length <= 1) {
+            go_back_to_target = true
+            break
+          }
           continue
         }
 
         if (matched_files.length == 0) {
           vscode.window.showInformationMessage(
             t('feature.search-files.no-files')
           )
+          if (positive_keywords.length <= 1) {
+            go_back_to_target = true
+            break
+          }
           continue
         }