1 files changed, 21 insertions, 0 deletions
diff --git a/core/string/ustring.cpp b/core/string/ustring.cpp
index ac8e2ece12..779270fe47 100644
--- a/core/string/ustring.cpp
+++ b/core/string/ustring.cpp
@@ -3507,6 +3507,27 @@ char32_t String::unicode_at(int p_idx) const {
 	return operator[](p_idx);
 }
 
+String String::indent(const String &p_prefix) const {
+	String new_string;
+	int line_start = 0;
+
+	for (int i = 0; i < length(); i++) {
+		const char32_t c = operator[](i);
+		if (c == '\n') {
+			if (i == line_start) {
+				new_string += c; // Leave empty lines empty.
+			} else {
+				new_string += p_prefix + substr(line_start, i - line_start + 1);
+			}
+			line_start = i + 1;
+		}
+	}
+	if (line_start != length()) {
+		new_string += p_prefix + substr(line_start);
+	}
+	return new_string;
+}
+
 String String::dedent() const {
 	String new_string;
 	String indent;