In OSX apps, triple-clicking normally highlights the whole line.
In sublime text 2, triple-click is just a double-click + a click to de-select the word.
It gets worse the you click and hold. In OSX, double-click+hold would select the clicked word and start selection mode, just like when you use a single click+hold to select text. In the same way, triple-click+ should select the whole line and start the selection mode.
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