================================================
template functions vs relational expressions
================================================

T1 a = b < c > d;
T2 e = f<T3>(g);
int a = std::get<0>(t);

---

(translation_unit
  (declaration
    (type_identifier)
    (init_declarator
      (identifier)
      (binary_expression
        (binary_expression (identifier) (identifier))
        (identifier))))
  (declaration
    (type_identifier)
    (init_declarator
      (identifier)
      (call_expression
        (template_function (identifier) (template_argument_list
          (type_descriptor (type_identifier))))
        (argument_list (identifier)))))
  (declaration
    (primitive_type)
    (init_declarator
      (identifier)
      (call_expression
        (qualified_identifier
          (namespace_identifier)
          (template_function
            (identifier)
            (template_argument_list (number_literal))))
        (argument_list (identifier))))))

=================================================
function declarations vs variable initializations
=================================================

// Function declarations
T1 a(T2 *b);
T3 c(T4 &d, T5 &&e);

// Variable declarations with initializers
T7 f(g.h);
T6 i{j};

---

(translation_unit
  (comment)
  (declaration
    (type_identifier)
    (function_declarator
      (identifier)
      (parameter_list (parameter_declaration (type_identifier) (pointer_declarator (identifier))))))
  (declaration
    (type_identifier)
    (function_declarator
      (identifier)
      (parameter_list
        (parameter_declaration (type_identifier) (reference_declarator (identifier)))
        (parameter_declaration (type_identifier) (reference_declarator (identifier))))))

  (comment)
  (declaration
    (type_identifier)
    (init_declarator
      (identifier)
      (argument_list (field_expression (identifier) (field_identifier)))))
  (declaration
    (type_identifier)
    (init_declarator
      (identifier)
      (initializer_list (identifier)))))

================================================
template classes vs relational expressions
================================================

int main() {
  T1<T2> v1;
  T1<T2> v2 = v3;
}

---

(translation_unit (function_definition
  (primitive_type)
  (function_declarator (identifier) (parameter_list))
  (compound_statement
    (declaration
      (template_type (type_identifier)
        (template_argument_list (type_descriptor (type_identifier))))
      (identifier))
    (declaration
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