Bug 300862 Change buttons order in PathVariableDialog
IMHO more intuitive order for buttons in PathVariableDialog would be [File...][Folder...][Variable...] instead of [File...][Variable...][Folder...]. I can provide a patch if the swap makes sense to you too ;)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/PathVariableDialog.java
if (operationMode != EDIT_LINK_LOCATION) {
	        
	        variableNameLabel = new Label(contents, SWT.LEAD);
	        variableNameLabel.setText(nameLabelText);
	     
	        
	        variableNameField = new Text(contents, SWT.SINGLE | SWT.BORDER);
	        variableNameField.setText(variableName);
	        variableNameField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true,
	        		false, 2, 1));
	        variableNameField.addModifyListener(new ModifyListener() {
	            public void modifyText(ModifyEvent event) {
	                variableNameModified();
	            }
	        });
        }
        
        
        variableValueLabel = new Label(contents, SWT.LEAD);
        variableValueLabel.setText(valueLabelText);
        
        variableValueField = new Text(contents, SWT.SINGLE | SWT.BORDER);
        variableValueField.setText(variableValue);
        variableValueField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true,
        		false));
        variableValueField.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent event) {
                variableValueModified();
            }
        });