* mu-str: add mu_str_utf8ify

src/mu-str.h

@@ -220,6 +220,17 @@ char* mu_str_escape_c_literal (const gchar* str, gboolean in_quotes)
 char* mu_str_asciify_in_place (char *buf);
 
 
+/**
+ * turn string in buf into valid utf8. If this string is not valid
+ * utf8 already, the function massages the offending characters.
+ *
+ * @param buf a buffer to utf8ify
+ *
+ * @return a newly allocated utf8 string
+ */
+char* mu_str_utf8ify (const char *buf);
+
+
 /**
  * convert a string in a certain charset into utf8
  *