Merge pull request microsoft#101017 from Titozzz/patch-1

roblourens · web-flow · commit 3121d0426166 · 2020-06-25T06:41:47.000-07:00
fix(search): Replace crash empty string pattern
diff --git a/src/vs/base/common/search.ts b/src/vs/base/common/search.ts
@@ -18,7 +18,7 @@ export function buildReplaceStringWithCasePreserved(matches: string[] | null, pa
 			return pattern.toUpperCase();
 		} else if (matches[0].toLowerCase() === matches[0]) {
 			return pattern.toLowerCase();
-		} else if (strings.containsUppercaseCharacter(matches[0][0])) {
+		} else if (strings.containsUppercaseCharacter(matches[0][0]) && pattern.length > 0) {
 			return pattern[0].toUpperCase() + pattern.substr(1);
 		} else {
 			// we don't understand its pattern yet.
