@mdo Should I add full fix for #8869, or just keep this pull request for minification of styles?

The problem as I understand it with this is that it doesn't make for mixin-friendly situations, right?

If you're talking about fix for #8869, my idea was something like:

.responsive-visibility() {
  display: block !important;
  tr& { display: table-row !important; }
  th&,
  td& { display: table-cell !important; }
  &.inline { display: inline-block !important; }
}

It's mixinable.

@zdroid I don't mean for that issue, I mean for this pull request. We need to maintain the mixin-friendly approach of the current implementation where anyone can use .visible-xs() and get all the appropriate styles.

@mdo Ok, I'll bring back the .responsive-invisibility() directly in classes. I'll do it tomorrow.

The same thing is for .*-print visibility utilities, I'm looking into them.

@mdo Mixinable now.

Thanks! :)