* add mu_msg_str_normalize (to remove accents from strings, optionally lowercase)

src/mu-msg-str.c

@@ -23,6 +23,31 @@
 #include "mu-msg-str.h"
 #include "mu-msg-flags.h"
 
+char*
+mu_msg_str_normalize (const char *str, gboolean downcase)
+{
+	gchar *s;
+	
+	if (!str)
+		return NULL;
+
+	s = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
+	if (!s) {
+		g_warning ("%s: not valid utf8 '%s'", __FUNCTION__, str);
+		return NULL;
+	}
+		
+	if (downcase) {
+		gchar *tmp;
+		tmp = g_utf8_strdown (s, -1);
+		g_free (s);
+		s = tmp;
+	}
+
+	return s;
+}
+
+
 
 const char* 
 mu_msg_str_date_s (time_t t)

src/mu-msg-str.h

@@ -26,6 +26,8 @@
 #include "mu-msg.h"
 #include "mu-msg-flags.h"
 
+G_BEGIN_DECLS
+
 /**
  * get a display string for a given time_t;
  * use the preferred date/time for the current locale
@@ -104,4 +106,19 @@ const char* mu_msg_str_prio  (MuMsgPrio prio) G_GNUC_CONST;
 char* mu_msg_str_summarize (const char* str,
 			    size_t max_lines) G_GNUC_WARN_UNUSED_RESULT;
 
+
+
+/** 
+ * normalize a string (ie., collapse accented characters etc.), and
+ * optionally, downcase it
+ * 
+ * @param str a valid utf8 string or NULL
+ * @param downcase if TRUE, convert the string to lowercase
+ * 
+ * @return the normalize string, or NULL in case of error or str was NULL
+ */
+char* mu_msg_str_normalize (const char *str, gboolean downcase);
+
+G_END_DECLS
+
 #endif /*__MU_MSG_STR_H__*/