Fix #66467 - don't restrict .* regex in search

src/vs/workbench/parts/search/browser/searchView.ts

@@ -1143,20 +1143,6 @@ export class SearchView extends Viewlet implements IViewlet, IPanel {
 			return;
 		}
 
-		// Validate regex is OK
-		if (isRegex) {
-			let regExp: RegExp;
-			try {
-				regExp = new RegExp(contentPattern);
-			} catch (e) {
-				return; // malformed regex
-			}
-
-			if (strings.regExpLeadsToEndlessLoop(regExp)) {
-				return; // endless regex
-			}
-		}
-
 		const content: IPatternInfo = {
 			pattern: contentPattern,
 			isRegExp: isRegex,

src/vs/workbench/parts/search/browser/searchWidget.ts

@@ -397,15 +397,12 @@ export class SearchWidget extends Widget {
 		if (!this.searchInput.getRegex()) {
 			return null;
 		}
-		let regExp: RegExp;
 		try {
-			regExp = new RegExp(value);
+			// tslint:disable-next-line: no-unused-expression
+			new RegExp(value);
 		} catch (e) {
 			return { content: e.message };
 		}
-		if (strings.regExpLeadsToEndlessLoop(regExp)) {
-			return { content: nls.localize('regexp.validationFailure', "Expression matches everything") };
-		}
 
 		if (strings.regExpContainsBackreference(value)) {
 			if (!this.searchConfiguration.usePCRE2) {