GUISettings.tripleClickSelectsLine
var tripleClickSelectsLine: bool;
Description

Should triple-clicking select whole text in text fields.

Bu default is set to true.
	// Disables line selecting with triple click on the text area
	var str : String = "This is a string with \n two lines of text";

function OnGUI() { GUI.skin.settings.tripleClickSelectsLine = false; str = GUILayout.TextArea(str); }