Bug 43489 Conflicts between "Segmented Java Editor" and "Correct Indentation"
I20030917 + plugin export for smoke test Correct Indentation (Ctrl+I) causes problems in segmented java editor (Toolbar > click "Show Source of selected element only"). - org.junit as source - open TestCase.java - enable "Show Source of selected element only" - select method "run()" in outline - set cursor to 1:1 - Ctrl+I -> whole type becomes visible in editor - select method "run()" in outline again - manually mangle indentation by insterting/deleting tabs - Ctrl+A, Ctrl+I -> whole type becomes visible in editor - Ctrl+Z (Undo) -> the undo TextEdits are applied to the wrong offset and destroy +/- arbitrary parts of my source!
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/actions/IndentAction.java
IRegion previousLine= document.getLineInformation(line - 1);
				
				DocumentCommand command= new DocumentCommand() {
				};
				command.text= "\n"; 
				command.offset= previousLine.getOffset() + previousLine.getLength();
				new JavaDocAutoIndentStrategy(IJavaPartitions.JAVA_PARTITIONING).customizeDocumentCommand(document, command);
				int i= command.text.indexOf('*');
				if (i != -1)
					indent= command.text.substring(1, i);
				else
					indent= command.text.substring(1);
			}
		} 
		
		
		if (indent == null)
			indent= indenter.computeIndentation(offset);
		
		
		if (indent == null)
			indent= new String();
		
		
		
		int lineLength= currentLine.getLength();