diff -r 3f655b1b0d93 -r f39394c9d41f bookloupe/counters.c
--- a/bookloupe/counters.c	Sat Sep 21 18:28:40 2013 +0100
+++ b/bookloupe/counters.c	Tue Sep 24 07:22:18 2013 +0100
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include <string.h>
 #include <glib.h>
 #include "bookloupe.h"
 #include "counters.h"
@@ -44,9 +45,9 @@
 	return GINT_TO_POINTER((gint)CHAR_SQUOTE);
     else if (ch==CHAR_LS_QUOTE || ch==CHAR_RS_QUOTE)
 	return GINT_TO_POINTER((gint)CHAR_LS_QUOTE);
-    else
+    else if (ch<0x4000 || ch-0x4000>=NO_SPECIAL_COUNTERS)
     {
-	g_warning("Matching pair not found for U+%04"G_GINT32_FORMAT"X",ch);
+	g_warning("Matching pair not found for U+%04" G_GINT32_MODIFIER "X",ch);
 	return GINT_TO_POINTER((gint)ch);
     }
 }
@@ -96,6 +97,13 @@
     return value->open-value->close;
 }
 
+void counters_reset(struct counters *counters)
+{
+    if (counters->matching)
+	g_tree_destroy(counters->matching);
+    memset(counters,0,sizeof(*counters));
+}
+
 void counters_destroy(struct counters *counters)
 {
     if (counters->matching)