Bug 82743 [Markers] improved problem filter needed (OR clauses)
when working with large workspaces I find the current problems filter not powerful enough. If I were able to AND and OR the conditions available from the UI then I would solve all my use cases. my most needed one is : I would like to see ERRORS anywhere in the workspace OR WARNINGS in the current selected project
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/BookmarkFilter.java
public BookmarkFilter() {
        super(new String[] { IMarker.BOOKMARK });
    }
    /**
     * Returns true iff the given marker is accepted by this filter
     */
    public boolean selectMarker(ConcreteMarker marker) {
        return !isEnabled()
                || (super.selectMarker(marker) && selectByDescription(marker));
    }
    private boolean selectByDescription(ConcreteMarker marker) {
        if (description == null || description.equals("")) 
            return true;
        String markerDescription = marker.getDescription();
        int index = markerDescription.indexOf(description);
        return contains ? (index >= 0) : (index < 0);
    }
    boolean getContains() {
        return contains;
    }
    String getDescription() {
        return description;
    }
    void setContains(boolean contains) {
        this.contains = contains;
    }
    void setDescription(String description) {
        this.description = description;
    }
    void resetState() {