We currently have several different styles of indenting class template definitions. Usually, every "structural" line break causes an extra indent level, like we have in synopses:

namespace std {
  template <typename T>
    class foo;
}

But when it comes to definitions, we sometimes follow this convention and othertimes we violate it:

1. "No linebreak after template":

   namespace std {
     template <typename T> class foo {
     public:
       void bar();
     };
   }
   

2. "linebreak and indent":

   namespace std {
     template <typename T>
       class foo {
       public:
         void bar();
       };
   }
   

3. "linebreak with no indent":

   namespace std {
     template <typename T>
     class foo {
     public:
       void bar();
     };
   }
   

Of these three options, (1) and (2) seem the most consistent. Option (1) is not always feasible when the template parameter list is long. However, option (3) is used a lot, especially in the older parts of the text (e.g. [containers]).

For now, I will probably retain the local style, though if I need to add missing namespace std {s and the indentation changes, I might as well remove instances of (3). But it would be good to decide on a definite style and record that in the wiki. (My vote would be to allow only (1) and (2).)