Frustrating JavaScript Behavior on Permalinks page

[filosofo]

On the Permalinks options page, if the "custom" button isn't checked and you try to type in the "custom structure" field, your changes are undone and focus goes back to whatever button is unchecked. This seems counter-intuitive: it took me a few clicks before I realized what was going on.

Instead, it should automatically check the "custom" check button if a user gives the custom structure field the focus. My two lines of Javascript and one line of PHP in the attached diff patch add that feature.

[ryan]

(In [3148]) Radio selection smartness. Props filosofo. fixes #1895

[(none)]

Milestone 2.0 deleted