Description Maksim Dzyuba 2021-07-12 07:33:52 EDT

Created attachment 286769 [details]
Example project

Hello. I have some troubles with Eclipse command "Previous Edit Location". This command in some cases does not open text editor with last edit. 
For reproducing:
1) Open attached project
2) Open file "t1" and add any symbol to 1st line
3) Open file "t2" and add any symbol to 3rd line
4) Open file "t3" and add any symbol to 5th line
5) Open file "t4" and add any symbol to 15th line
6) Save changes in editor for "t4" and close it
7) Call command "Previous Edit Location".
I suppose that editor for "t4" will be opened but activate editor for "t1"

I can reproduce that in Eclipse 2020-12 (4.18) and 2021-06 (4.20.0)

PS. I think, that problem at org.eclipse.ui.texteditor.AbstractTextEditor.TextListener.inputDocumentAboutToBeChanged(IDocument, IDocument) and org.eclipse.ui.texteditor.AbstractTextEditor.TextListener.discardHistoryFor(IDocument)
In this methods, calling when editor close, method "org.eclipse.ui.internal.texteditor.HistoryTracker.browseBackward()" is called in cycle