Bug 113159 CUEditor won't let me insert just one TAB
Given the following code: Pattern pattern = selected ? new Pattern(null,...) : new Pattern(nul,...); <<CARET>>g.setBackgroundPattern(pattern); I cannot insert a single TAB at the Caret location. typing TAB inserts two TABs. BACKSPACE deletes both.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/actions/IndentAction.java
document.addPosition(end);
				firstLine= document.getLineOfOffset(offset);
				
				int minusOne= length == 0 ? 0 : 1;
				nLines= document.getLineOfOffset(offset + length - minusOne) - firstLine + 1;
			} catch (BadLocationException e) {
				
				JavaPlugin.log(new Status(IStatus.ERROR, JavaPlugin.getPluginId(), IStatus.OK, "", e)); 
				return;
			}
			
			Runnable runnable= new Runnable() {
				public void run() {
					IRewriteTarget target= (IRewriteTarget)getTextEditor().getAdapter(IRewriteTarget.class);
					if (target != null) {
						target.beginCompoundChange();
						target.setRedraw(false);
					}
					
					try {
						JavaHeuristicScanner scanner= new JavaHeuristicScanner(document);
						JavaIndenter indenter= new JavaIndenter(document, scanner, getJavaProject());
						boolean hasChanged= false;
						for (int i= 0; i < nLines; i++) {
							hasChanged |= indentLine(document, firstLine + i, offset, indenter, scanner);
						}
						
						
						
						int newOffset, newLength;