Bug 6718 Error ticks on non-Java resources
This is a VAME request. They would like to show error ticks on manifest files.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/AnnotationErrorTickProvider.java
} else if (priority == IMarker.SEVERITY_ERROR) {
							info= ERRORTICK_ERROR;
						}
					}
				}
			} catch (JavaModelException e) {
				JavaPlugin.log(e.getStatus());
			}
		}
		return info;
	}
		
	private IMarker isApplicable(Annotation annot, ISourceRange range) {
		try {
			if (annot instanceof MarkerAnnotation) {
				IMarker marker= ((MarkerAnnotation)annot).getMarker();
				if (marker.exists() && marker.isSubtypeOf(IJavaModelMarker.JAVA_MODEL_PROBLEM_MARKER)) {
					Position pos= fAnnotationModel.getPosition(annot);
					if (pos.overlapsWith(range.getOffset(), range.getLength())) {
						return marker;
					}
				}
			}
		} catch (CoreException e) {
			JavaPlugin.log(e.getStatus());
		}						
		return null;
	}
}