Remove duplicate properties

[MariskaS]

Hello!
If the selector 2 duplicate rules with different properties, if minification is only recently (see the task #257). But I need to remain both rules, as one used to Сhrom and the second for IE11
What to do in this case?

[lahmatiy]

Can you provide an example?

[MariskaS]

I am use angular-material. This library can meet the selectors with duplicate rules.And of course not only in this library can this be.
http://take.ms/FzN4b
https://github.com/angular/bower-material/edit/master/angular-material.css

[lahmatiy]

Yep, in this case we need to keep both. CSSO tries to keep properties with different support. In this example CSSO left both (try it here):

.example {
    color: red;
    color: rgba(255, 0, 0, .5);
}

But CSSO doesn't know about start and end special values for text-align and wrongly merge them. That's can be fixed when issue is known. Probably we should rename issue to text-align: start/end problem...

[lahmatiy]

Problem with text-align is fixed in #281
Closing issue for now, if any similar problem will be found – please, create a separate issue.

[MariskaS]

Thank you!