Fix the behavior of intermixed tests end edits in match

to get the following recipe working:

<match>
  <test1 .../>
  <edit1 .../>
  <test2 .../>
  <edit2 .../>
</match>

as:

<match>
  <test1 .../>
  </edit1 .../>
</match>
<match>
  <test1 .../>
  <test2 .../>
  <edit2 .../>
</match>

src/fccfg.c

@@ -226,20 +226,25 @@ FcSubstDestroy (FcSubst *s)
 FcExpr *
 FcConfigAllocExpr (FcConfig *config)
 {
-  if (!config->expr_pool || config->expr_pool->next == config->expr_pool->end)
-  {
-    FcExprPage *new_page;
+    FcExpr *e;
 
-    new_page = malloc (sizeof (FcExprPage));
-    if (!new_page)
-      return 0;
+    if (!config->expr_pool || config->expr_pool->next == config->expr_pool->end)
+    {
+	FcExprPage *new_page;
 
-    new_page->next_page = config->expr_pool;
-    new_page->next = new_page->exprs;
-    config->expr_pool = new_page;
-  }
+	new_page = malloc (sizeof (FcExprPage));
+	if (!new_page)
+	    return 0;
 
-  return config->expr_pool->next++;
+	new_page->next_page = config->expr_pool;
+	new_page->next = new_page->exprs;
+	config->expr_pool = new_page;
+    }
+
+    e = config->expr_pool->next++;
+    FcRefInit (&e->ref, 1);
+
+    return e;
 }
 
 FcConfig *

src/fcint.h

@@ -240,6 +240,7 @@ typedef struct _FcExprName {
 
 typedef struct _FcExpr {
     FcOp   op;
+    FcRef  ref;
     union {
 	int	    ival;
 	double	    dval;

src/fcxml.c

@@ -223,11 +223,24 @@ FcExprCreateOp (FcConfig *config, FcExpr *left, FcOp op, FcExpr *right)
     return e;
 }
 
+static FcExpr *
+FcExprReference (FcExpr *e)
+{
+    if (e)
+    {
+	FcRefInc (&e->ref);
+    }
+
+    return e;
+}
+
 static void
 FcExprDestroy (FcExpr *e)
 {
     if (!e)
 	return;
+    if (FcRefDec (&e->ref) != 1)
+	return;
     switch (FC_OP_GET_OP (e->op)) {
     case FcOpInteger:
 	break;
@@ -727,6 +740,21 @@ FcTestCreate (FcConfigParse *parse,
     return test;
 }
 
+static FcTest *
+FcTestDuplicate (FcTest *test)
+{
+    FcTest *retval = (FcTest *) malloc (sizeof (FcTest));
+
+    if (retval)
+    {
+	memcpy (retval, test, sizeof (FcTest));
+	retval->next = NULL;
+	retval->expr = FcExprReference (test->expr);
+    }
+
+    return retval;
+}
+
 static FcEdit *
 FcEditCreate (FcConfigParse	*parse,
 	      FcObject		object,
@@ -2401,7 +2429,7 @@ FcParseMatch (FcConfigParse *parse)
     FcVStack	    *vstack;
     FcBool           tested = FcFalse;
     FcSubstStack    *sstack = NULL;
-    int              len, pos = 0;
+    int              len, pos = 0, i;
 
     kind_name = FcConfigGetAttribute (parse, "target");
     if (!kind_name)
@@ -2438,6 +2466,13 @@ FcParseMatch (FcConfigParse *parse)
 	    test = vstack->u.test;
 	    vstack->tag = FcVStackNone;
 	    tested = FcTrue;
+	    for (i = 0; i < pos; i++)
+	    {
+		FcTest *t = FcTestDuplicate(test);
+
+		t->next = sstack[i].test;
+		sstack[i].test = t;
+	    }
 	    break;
 	case FcVStackEdit:
 	    /* due to the reverse traversal, <edit> node appears faster than