tpope/vim-commentary — pull request #37 by jpflouret (2014-11-11 00:21:25+00:00)
Title: Make whitespace around comment be optional based on commentstring

As mentioned in #33...

Space around comment should be based on commentstring such that with `commentstring=//%s` you get:
```cpp
//var example = "hi";
//var anotherExample = "hello";
```

But with `commentstring=//\ %s` you get
```cpp
// var example = "hi";
// var anotherExample = "hello";
```

Or `commentstring=` you get
```html

```

And with `commentstring=` you get
```html

```