1 files changed, 6 insertions, 1 deletions
diff --git a/AK/StringBuilder.h b/AK/StringBuilder.h
index cc042e60de..d313c9147d 100644
--- a/AK/StringBuilder.h
+++ b/AK/StringBuilder.h
@@ -38,7 +38,7 @@ class StringBuilder {
 public:
     using OutputType = String;
 
-    explicit StringBuilder(size_t initial_capacity = 16);
+    explicit StringBuilder(size_t initial_capacity = inline_capacity);
     ~StringBuilder() { }
 
     void append(const StringView&);
@@ -83,7 +83,12 @@ public:
 
 private:
     void will_append(size_t);
+    u8* data() { return m_buffer.is_null() ? m_inline_buffer : m_buffer.data(); }
+    const u8* data() const { return m_buffer.is_null() ? m_inline_buffer : m_buffer.data(); }
+    bool using_inline_buffer() const { return m_buffer.is_null(); }
 
+    static constexpr size_t inline_capacity = 128;
+    u8 m_inline_buffer[inline_capacity];
     ByteBuffer m_buffer;
     size_t m_length { 0 };
 };