Add value-keyword-case

[compeek]

Clearly describe the bug

It seems to me that value-keyword-case is probably missing in stylelint-config-standard. It is not called out in the readme as not included, and all of the other *-case options are included and set to lower.

Which rule, if any, is the bug related to?

value-keyword-case

What CSS is needed to reproduce the bug?

What stylelint configuration is needed to reproduce the bug?

Which version of stylelint are you using?

How are you running stylelint: CLI, PostCSS plugin, Node.js API?

Does the bug relate to non-standard syntax (e.g. SCSS, Less etc.)?

What did you expect to happen?

I expect value-keyword-case to be included in stylelint-config-standard for consistency.

What actually happened (e.g. what warnings or errors did you get)?

value-keyword-case is not included in stylelint-config-standard.

[compeek]

I will say that after messing around with this more in my project, I realized a potential reason this rule isn't included in stylelint-config-standard: font family names are usually not lowercase, but they would fall under this rule.

I'll leave the issue open in case this is worth considering nonetheless.

[jeddy3]

@compeek Thanks for raising the issue.

It seems to me that value-keyword-case is probably missing

I agree. It's probably an oversight that it wasn't included.

font family names are usually not lowercase, but they would fall under this rule.

The rule ignores <custom-idents> of known properties. There are tests covering font-family names. So, I can't think of a reason off-hand not to include the rule.

---

I'm happy to see this rule be included in the config unless there are any objections?