updated for version 7.3.479
Problem:    When 'cursorline' is set the line number highlighting can't be set
            separately.
Solution:   Add "CursorLineNr". (Howard Buchholz)
diff --git a/src/screen.c b/src/screen.c
index 97d636d..fd74707 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -3501,9 +3501,11 @@
 		    char_attr = hl_attr(HLF_N);
 #ifdef FEAT_SYN_HL
 		    /* When 'cursorline' is set highlight the line number of
-		     * the current line differently. */
+		     * the current line differently.
+		     * TODO: Can we use CursorLine instead of CursorLineNr
+		     * when CursorLineNr isn't set? */
 		    if (wp->w_p_cul && lnum == wp->w_cursor.lnum)
-			char_attr = hl_combine_attr(hl_attr(HLF_CUL), char_attr);
+			char_attr = hl_attr(HLF_CLN);
 #endif
 		}
 	    }