diff --git a/doc/fontconfig-user.sgml b/doc/fontconfig-user.sgml
index 90e246b..eeff69a 100644
--- a/doc/fontconfig-user.sgml
+++ b/doc/fontconfig-user.sgml
@@ -425,6 +425,8 @@ with "same" binding using the value from the matched pattern element.
   "prepend_first"         Insert at head of list  Insert at head of list
   "append"                Append after matching   Append at end of list
   "append_last"           Append at end of list   Append at end of list
+  "delete"                Delete matching value   Delete all values
+  "delete_all"            Delete all values       Delete all values
     </programlisting>
   </para></refsect2>
   <refsect2><title><literal>&lt;int&gt;</literal>, <literal>&lt;double&gt;</literal>, <literal>&lt;string&gt;</literal>, <literal>&lt;bool&gt;</literal></title><para>
diff --git a/fonts.dtd b/fonts.dtd
index 664467d..4c38e77 100644
--- a/fonts.dtd
+++ b/fonts.dtd
@@ -189,7 +189,7 @@
 <!ELEMENT edit (%expr;)*>
 <!ATTLIST edit
 	  name CDATA	    #REQUIRED
-	  mode (assign|assign_replace|prepend|append|prepend_first|append_last) "assign"
+	  mode (assign|assign_replace|prepend|append|prepend_first|append_last|delete|delete_all) "assign"
 	  binding (weak|strong|same) "weak">
 
 <!--
diff --git a/src/fccfg.c b/src/fccfg.c
index 12d7e1a..db878d5 100644
--- a/src/fccfg.c
+++ b/src/fccfg.c
@@ -1701,6 +1701,16 @@ FcConfigSubstituteWithPat (FcConfig    *config,
 	    case FcOpAppendLast:
 		FcConfigPatternAdd (p, e->object, l, FcTrue);
 		break;
+	    case FcOpDelete:
+		if (t)
+		{
+		    FcConfigDel (&st[i].elt->values, st[i].value);
+		    break;
+		}
+		/* fall through ... */
+	    case FcOpDeleteAll:
+		FcConfigPatternDel (p, e->object);
+		break;
 	    default:
                 FcValueListDestroy (l);
 		break;
diff --git a/src/fcdbg.c b/src/fcdbg.c
index 270d791..9d02f5a 100644
--- a/src/fcdbg.c
+++ b/src/fcdbg.c
@@ -79,7 +79,7 @@ void
 FcValuePrintWithPosition (const FcValue v, FcBool show_pos_mark)
 {
     if (show_pos_mark)
-	printf (" [insert here] ");
+	printf (" [marker] ");
     else
 	printf (" ");
     _FcValuePrintFile (stdout, v);
@@ -110,7 +110,7 @@ FcValueListPrintWithPosition (FcValueListPtr l, const FcValueListPtr pos)
 	FcValueBindingPrint (l);
     }
     if (!pos)
-	printf (" [insert here]");
+	printf (" [marker]");
 }
 
 void
@@ -222,6 +222,8 @@ FcOpPrint (FcOp op_)
     case FcOpPrependFirst: printf ("PrependFirst"); break;
     case FcOpAppend: printf ("Append"); break;
     case FcOpAppendLast: printf ("AppendLast"); break;
+    case FcOpDelete: printf ("Delete"); break;
+    case FcOpDeleteAll: printf ("DeleteAll"); break;
     case FcOpQuest: printf ("Quest"); break;
     case FcOpOr: printf ("Or"); break;
     case FcOpAnd: printf ("And"); break;
diff --git a/src/fcint.h b/src/fcint.h
index 71b7341..fceb8cc 100644
--- a/src/fcint.h
+++ b/src/fcint.h
@@ -208,6 +208,7 @@ typedef enum _FcOp {
     FcOpField, FcOpConst,
     FcOpAssign, FcOpAssignReplace,
     FcOpPrependFirst, FcOpPrepend, FcOpAppend, FcOpAppendLast,
+    FcOpDelete, FcOpDeleteAll,
     FcOpQuest,
     FcOpOr, FcOpAnd, FcOpEqual, FcOpNotEqual,
     FcOpContains, FcOpListing, FcOpNotContains,
diff --git a/src/fcxml.c b/src/fcxml.c
index 5981ea9..470e44f 100644
--- a/src/fcxml.c
+++ b/src/fcxml.c
@@ -260,6 +260,8 @@ FcExprDestroy (FcExpr *e)
     case FcOpPrependFirst:
     case FcOpAppend:
     case FcOpAppendLast:
+    case FcOpDelete:
+    case FcOpDeleteAll:
 	break;
     case FcOpOr:
     case FcOpAnd:
@@ -2321,6 +2323,8 @@ static const FcOpMap fcModeOps[] = {
     { "prepend_first",	FcOpPrependFirst    },
     { "append",		FcOpAppend	    },
     { "append_last",	FcOpAppendLast	    },
+    { "delete",		FcOpDelete	    },
+    { "delete_all",	FcOpDeleteAll	    },
 };
 
 #define NUM_MODE_OPS (int) (sizeof fcModeOps / sizeof fcModeOps[0])
@@ -2363,6 +2367,13 @@ FcParseEdit (FcConfigParse *parse)
 	return;
 
     expr = FcPopBinary (parse, FcOpComma);
+    if ((mode == FcOpDelete || mode == FcOpDeleteAll) &&
+	expr != NULL)
+    {
+	FcConfigMessage (parse, FcSevereWarning, "Expression doesn't take any effects for delete and delete_all");
+	FcExprDestroy (expr);
+	expr = NULL;
+    }
     edit = FcEditCreate (parse, FcObjectFromName ((char *) name),
 			 mode, expr, binding);
     if (!edit)