Impossible to satisfy eol-last rule

[BYK]

With the upgrade to remark, it is not impossible to enforce eol-last because all trailing whitespace on code blocks are removed.

May be a good idea to silence this completely internally if possible. Or at least say something about this on docs.

[btmills]

Yeah, I think it makes sense to say that rule doesn't really apply in the context of a Markdown code block. I see two options:

1. Document this and require people to disable this rule in a Markdown-specific config. If there are other rules like this, it may be necessary.
2. Like you suggested, we can silence this internally by filtering out eol-last errors during postprocessing. Hopefully this option is sufficient.

Before making a decision, are there any other rules that don't apply?

[BYK]

I'd love to do 1 but until we have configuration per file/glob it doesn't look practical (or unless we can find a way to set rules inside Markdown files without using comments in code blocks) so I'd go with 2 with proper documentation.

I haven't seen any other rules yet. no-trailing-spaces and no-irregular-whitespace are other potential rules that my not be applicable.

[btmills]

I'd really like to be able to do 1 as well. For reference, glob-based configuration is eslint/eslint#3611. I'll post over there and see if I can help out.