Same-sex marriages are on the way to becoming commonplace in Pennsylvania, which is not to say they no longer are controversial.

The sudden end of the state's gay-marriage ban, due to a recent federal court decision, instantly changed state law, and Gov. Tom Corbett's decision not to appeal the ruling eliminated even an adjustment period. It is extraordinary that things could change so quickly, especially regarding a highly controversial social issue.

By contrast, the state Legislature has moved at a glacial pace on a far less controversial aspect of the gay rights issue. Pennsylvania law does not specifically proscribe discrimination against gay people in employment and housing.

To his credit, Mr. Corbett supports a bill to formally outlaw such discrimination. He said he was surprised to find that such discrimination legally is possible in the commonwealth.

Even more surprising is the slow pace of change. The Legislature should act quickly to outlaw discrimination as a matter of principle.