Harden TextSearchProvider (again) (#1294)

Author: isc-bsaviano

src/providers/FileSystemProvider/TextSearchProvider.ts

@@ -314,8 +314,9 @@ export class TextSearchProvider implements vscode.TextSearchProvider {
         // The server reported no matches in this file
         !file.matches.length ||
         // The file name is malformed
-        (file.doc.includes("/") && !/\/(?:[^/]+\/)+[^/.]*(?:\.[^/.]+)+/.test(file.doc)) ||
-        (!file.doc.includes("/") && !/(%?[\p{L}\d\u{100}-\u{ffff}]+(?:\.[\p{L}\d\u{100}-\u{ffff}]+)+)/u.test(file.doc))
+        (file.doc.includes("/") && !/^\/(?:[^/]+\/)+[^/.]*(?:\.[^/.]+)+$/.test(file.doc)) ||
+        (!file.doc.includes("/") &&
+          !/^(%?[\p{L}\d\u{100}-\u{ffff}]+(?:\.[\p{L}\d\u{100}-\u{ffff}]+)+)$/u.test(file.doc))
       ) {
         return;
       }