diff --git a/tooling/pipeline/includes/services/xeger/xeger_internal.h b/tooling/pipeline/includes/services/xeger/xeger_internal.h
index b54d29b0..d39614e0 100644
--- a/tooling/pipeline/includes/services/xeger/xeger_internal.h
+++ b/tooling/pipeline/includes/services/xeger/xeger_internal.h
@@ -55,33 +55,33 @@ struct Alternation;
 struct Repeat;
 
 struct Visitor {
-  virtual void Visit(const Literal&) = 0;
-  virtual void Visit(const AnyChar&) = 0;
-  virtual void Visit(const CharClass&) = 0;
-  virtual void Visit(const Concat&) = 0;
-  virtual void Visit(const Alternation&) = 0;
-  virtual void Visit(const Repeat&) = 0;
-  virtual ~Visitor() = default;
+   virtual void Visit(const Literal&) = 0;
+   virtual void Visit(const AnyChar&) = 0;
+   virtual void Visit(const CharClass&) = 0;
+   virtual void Visit(const Concat&) = 0;
+   virtual void Visit(const Alternation&) = 0;
+   virtual void Visit(const Repeat&) = 0;
+   virtual ~Visitor() = default;
 };
 
 struct Node {
-  virtual void Accept(Visitor&) const = 0;
-  virtual ~Node() = default;
+   virtual void Accept(Visitor&) const = 0;
+   virtual ~Node() = default;
 };
 
 using NodePtr = std::unique_ptr<Node>;
 
 template <typename Derived>
 struct Visitable : Node {
-  void Accept(Visitor& visitor) const override {
-    visitor.Visit(static_cast<const Derived&>(*this));
-  }
+   void Accept(Visitor& visitor) const override {
+      visitor.Visit(static_cast<const Derived&>(*this));
+   }
 };
 
 // One fixed character, e.g. 'a'.
 struct Literal : Visitable<Literal> {
-  char ch;
-  explicit Literal(const char c) : ch(c) {}
+   char ch;
+   explicit Literal(const char c) : ch(c) {}
 };
 
 // The "." wildcard: any single printable character.
@@ -91,18 +91,18 @@ struct AnyChar : Visitable<AnyChar> {};
 // character 'x' is the range {'x', 'x'}. `negated` flips the meaning to
 // "any character NOT listed" (i.e. `[^...]`).
 struct CharClass : Visitable<CharClass> {
-  std::vector<std::pair<char, char>> ranges;
-  bool negated = false;
+   std::vector<std::pair<char, char>> ranges;
+   bool negated = false;
 };
 
 // "Do these children one after another."
 struct Concat : Visitable<Concat> {
-  std::vector<NodePtr> parts;
+   std::vector<NodePtr> parts;
 };
 
 // "Pick exactly one of these options at random" -- the `|` operator.
 struct Alternation : Visitable<Alternation> {
-  std::vector<NodePtr> options;
+   std::vector<NodePtr> options;
 };
 
 // "Repeat one child between min and max times."
@@ -111,9 +111,9 @@ struct Alternation : Visitable<Alternation> {
 //   a?     -> min 0, max 1
 //   a{2,5} -> min 2, max 5
 struct Repeat : Visitable<Repeat> {
-  NodePtr child;
-  unsigned int min = 0;
-  std::optional<unsigned int> max;  // std::nullopt means "no upper bound"
+   NodePtr child;
+   unsigned int min = 0;
+   std::optional<unsigned int> max;  // std::nullopt means "no upper bound"
 };
 
 // Parser (recursive descent)
@@ -125,75 +125,75 @@ struct Repeat : Visitable<Repeat> {
 //         ParseAtom   ::=  a  .  [..]  (..)  \d
 
 class Parser {
- public:
-  explicit Parser(std::string_view pattern);
+  public:
+   explicit Parser(std::string_view pattern);
 
-  NodePtr Parse();
+   NodePtr Parse();
 
- private:
-  std::string src_;
-  size_t pos_ = 0;
+  private:
+   std::string src_;
+   size_t pos_ = 0;
 
-  // Strips anchors (leading '^' and trailing '$') as they are not needed for
-  // generation.
-  static std::string StripAnchors(std::string_view pattern);
+   // Strips anchors (leading '^' and trailing '$') as they are not needed for
+   // generation.
+   static std::string StripAnchors(std::string_view pattern);
 
-  [[nodiscard]] bool AtEnd() const;
-  [[nodiscard]] char Peek() const;
-  char Advance();
-  bool Match(char c);
-  void Expect(char c);
+   [[nodiscard]] bool AtEnd() const;
+   [[nodiscard]] char Peek() const;
+   char Advance();
+   bool Match(char c);
+   void Expect(char c);
 
-  // Level 1: alternation -- ( concat | concat | concat )
-  NodePtr ParseAlternation();
+   // Level 1: alternation -- ( concat | concat | concat )
+   NodePtr ParseAlternation();
 
-  // Level 2: concatenation -- a run of items back to back
-  NodePtr ParseConcat();
+   // Level 2: concatenation -- a run of items back to back
+   NodePtr ParseConcat();
 
-  // Level 3: an atom plus an optional quantifier
-  NodePtr ParseRepeat();
+   // Level 3: an atom plus an optional quantifier
+   NodePtr ParseRepeat();
 
-  // Curly-brace quantifiers: {n}, {n,}, {n,m}
-  NodePtr ParseBrace(NodePtr atom);
+   // Curly-brace quantifiers: {n}, {n,}, {n,m}
+   NodePtr ParseBrace(NodePtr atom);
 
-  // Level 4: an atom -- the smallest standalone unit
-  NodePtr ParseAtom();
+   // Level 4: an atom -- the smallest standalone unit
+   NodePtr ParseAtom();
 
-  static NodePtr MakeClass(std::vector<std::pair<char, char>> ranges,
-                           bool negated);
+   static NodePtr MakeClass(std::vector<std::pair<char, char>> ranges,
+                            bool negated);
 
-  NodePtr ParseEscape();
+   NodePtr ParseEscape();
 
-  NodePtr ParseCharClass();
+   NodePtr ParseCharClass();
 
-  // Reads one character inside [ ], turning \] \n etc. into the real
-  // character they represent.
-  char ClassChar();
+   // Reads one character inside [ ], turning \] \n etc. into the real
+   // character they represent.
+   char ClassChar();
 };
 
 // Generator -- a Visitor that emits a random matching string
 
 class XegerGenerator final : public Visitor {
- public:
-  XegerGenerator(std::mt19937& rng, int unbounded_cap);
+  public:
+   XegerGenerator(std::mt19937& rng, int unbounded_cap);
 
-  std::string Run(const Node& root);
+   std::string Run(const Node& root);
 
-  void Visit(const Literal& node) override;
-  void Visit(const AnyChar&) override;
-  void Visit(const CharClass& node) override;
-  void Visit(const Concat& node) override;
-  void Visit(const Alternation& node) override;
-  void Visit(const Repeat& node) override;
+   void Visit(const Literal& node) override;
+   void Visit(const AnyChar&) override;
+   void Visit(const CharClass& node) override;
+   void Visit(const Concat& node) override;
+   void Visit(const Alternation& node) override;
+   void Visit(const Repeat& node) override;
 
- private:
-  std::mt19937& rng_;
-  int unbounded_cap_;
-  std::string out_;
+  private:
+   std::mt19937& rng_;
+   int unbounded_cap_;
+   std::string out_;
 
-  static bool InRanges(const CharClass& node, char c);
+   static bool InRanges(const CharClass& node, char c);
 
-  char PickFromClass(const CharClass& node);
+   char PickFromClass(const CharClass& node);
 };
 
 }  // namespace xeger_internal