Missing CSS properties

[Synchro]

Some defined CSS properties are missing and are flagged as warnings: text-rendering, and several of the options described here, including font-variant-ligatures and friends.
While you could argue that these are not final, vendor-specific prefixes (which are even less final) are already allowed, even required in some cases, e.g. gradients.

[nzakas]

We purposely don't include all defined CSS properties because the draft specs change so frequently. We also don't specifically add vendor-prefixed properties, those are automatically skipped by CSS Lint. If there are specific non-vendor-prefixed ones that you think should be included, please list them out and point to some browser documentation indicating support.

[robsonsobral]

I found one: border-spacing

http://www.w3.org/TR/CSS2/tables.html#propdef-border-spacing
http://reference.sitepoint.com/css/border-spacing

[nzakas]

That one was already handled with #234

[robsonsobral]

Ops! I'm sorry!

[AaronAsAChimp]

The text-rendering property is not in draft status. Its a recommendation for SVG. It's not likely to change. Please add support for this-- I use it all the time.

[nzakas]

If you want a specific property added, please file a separate issue for it.

[AaronAsAChimp]

Sorry, the OP was wanting the same property, so I thought it fit. Will file a new bug.