New Rule: blocks-no-empty-line

[zallek]

Hi,

I have a feature proposition: a rule to disallow empty lines in blocks.

The following would raise an error:

.comment {
  display: flex;

  padding: 20px;
}

[glen-84]

👍

[shaneog]

👍

[DanPurdy]

Would you want any exceptions to this rule as an option?

[bgriffith]

I think it depends on if we limit it to testing for spaces before two property declarations only or not.

If we don't, I can think of some instances where you might want to have a space between vars and property declarations:

.foo {
    $foo: orange;

    color: $foo;
    ...
}

[glen-84]

It would be good to break it down into options like:

1. Blank line(s) block open (default: 0)
2. Blank line(s) block close (default: 0)
3. Blank line(s) between nested blocks (default: 1)
4. Blank line(s) between consecutive properties, variables, @include, etc. (default: 0 for each)
5. Blank line(s) between groups (f.e. when changing from @extend to @includes, @includes to vars, vars to properties, ..., and properties to the first nested block) (default: 0, 1 before first nested block)