Look at the screenshot. I want to select the non-blue button with a keyboard shortcut. What is it?

|
|
Tab key to navigate the focus between buttons, and press the space bar when a button is selected. The effect is as above image. When a blue box around a button, press the space bar, the button will be "pressed". If you found that the focus cannot be set to the button, pen the Keyboard preference, and config it as following:
|
|||||
|
|
@kukoo is right — also, for many pop-up dialogs, pressing ⌘ + <First letter in the button> works. That means you could reach the "Use .csv" button by pressing ⌘ + U. |
|||
|
|