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There is a unit test for XAM/XDM model: xml.xdm/test/unit/src/org/netbeans/modules/xml/xam/AbstractModelTest.java Its method testSourceEditSyncUndo fail with ArrayIndexOutOfBoundsException. The line where test fail is call to "redo" method for UndoManager. It is recent regression in editor module. I'm not sure about issue component. Please correct if it is wrong. Please see stacktrace attached.
Created attachment 110293 [details] stacktrace
I had to disable the unit test until this issue is fixed. Please revert changeset 9012c20a1d89 (#web-main) after you fix the regression. Thanks.
It appears to be fixed by yesterday's 9910e44e24b4. Test passes so I enabled it: http://hg.netbeans.org/jet-main/rev/24c5c5f65a18
Integrated into 'main-golden' Changeset: http://hg.netbeans.org/main-golden/rev/24c5c5f65a18 User: Miloslav Metelka <mmetelka@netbeans.org> Log: #201475 - Uncommented test in xml.xdm that now passes properly.