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On Mac Os X when press fn+backspace delete double symbols, same issue was on 7.4 Product Version = NetBeans IDE Dev (Build 201402120001) Operating System = Mac OS X version 10.9.1 running on x86_64 Java; VM; Vendor = 1.7.0_10 Runtime = Java HotSpot(TM) 64-Bit Server VM 23.6-b04
Created attachment 145116 [details] IDE log
*** This bug has been marked as a duplicate of bug 212051 ***