Comments with lots of `/`s should not have spaces inserted

[nrc]

e.g.,

-////////////////////////////////////////////////////////////////////////////////
-// Basic slice extension methods
-////////////////////////////////////////////////////////////////////////////////
+/// /////////////////////////////////////////////////////////////////////////////
+/// Basic slice extension methods
+/// /////////////////////////////////////////////////////////////////////////////

Note that we're changing a regular comment to a doc comment here too

[marcusklaas]

My lord, I forgot how much of a mess the comment code is 😱

[crumblingstatue]

Might not be the same issue, but we encountered this in rust-sfml.

The normal commented out code gets changed to doc comments.

 /// Shapes implementations using reference counting to manage shared resources
-// pub mod rc {
-//     pub use graphics::circle_shape::rc::CircleShape;
-//     pub use graphics::rectangle_shape::rc::RectangleShape;
-//     pub use graphics::convex_shape::rc::{ConvexShape, ConvexShapePoints};
-//     pub use graphics::shape::rc::Shape;
-//     pub use graphics::shader::rc::Shader;
-//     pub use graphics::text::rc::Text;
-//     pub use graphics::sprite::rc::Sprite;
-//     pub use graphics::render_states::rc::RenderStates;
-// }
+/// pub mod rc {
+///     pub use graphics::circle_shape::rc::CircleShape;
+///     pub use graphics::rectangle_shape::rc::RectangleShape;
+///     pub use graphics::convex_shape::rc::{ConvexShape, ConvexShapePoints};
+///     pub use graphics::shape::rc::Shape;
+///     pub use graphics::shader::rc::Shader;
+///     pub use graphics::text::rc::Text;
+///     pub use graphics::sprite::rc::Sprite;
+///     pub use graphics::render_states::rc::RenderStates;
+/// }

EDIT: This issue does not seem to appear using the rustfmt master branch.

[srinivasreddy]

As said in #1094 I am taking this. Thanks @nrc