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Product Version = NetBeans IDE 8.1 Beta (Build 201508041349) Operating System = Windows 7 version 6.1 running on amd64 Java; VM; Vendor = 1.8.0_51 Runtime = Java HotSpot(TM) 64-Bit Server VM 25.51-b03 check Options, appearance, sort opened document list Now, if you open the document list, it would be grouped by projects and within each ordere alphabetically But: the tabs of the open editors are still unordered. Once, I filed this as bug. I got the answer, the options will only affect the list, not the tab. Thus, I propose this as an important enhancement now: Order open editor tabs by project and alphabet, if the mentioned checkbox is ticked.
Created attachment 155489 [details] IDE log
Or at least, provide an "arrange" button. See attached snap, which displays the mess (if opend more files than in this example it becomes a real problem). An "arrange" button might be placed near by the "document list" button.
Created attachment 155490 [details] <no description>
If a developer displays the open editor tabs on top (which is default), the tabs usually are useless when more than a couple of editors are open. In such a case, the developer might frequently use the open documents list. If (like in my example) the developer switches the tabs to the left side, then this becomes the open document list. On a 2K Screen this list may show more than 50 files, on 4K even more. Without ordering, this becomes useless and the user needs to open the ordered document list. But, displaying tabs on left should avoid the need for opening this list. That's why it is really important to group and sort open editor tabs.
BTW, groups might be collapes / expanded
Rassigning for further evaluation.
For a better usage of the tabs, I sort them manually from time to time. And it seems to be a good idea, not to sort alphabetically with in a project only, but within a project and file type, eg. separate HTML files from Java files.