(mu_mh_delim): New function

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 1999, 2000, 2001, 2004, 2005  Free Software Foundation, Inc.
+   Copyright (C) 1999, 2000, 2001, 2004, 2005, 
+   2006  Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -142,6 +143,8 @@ extern int mu_set_default_fallback (const char *str);
 
 extern int mu_is_proto (const char *p);
 
+extern int mu_mh_delim (const char *str);
+  
 #ifdef __cplusplus
 }
 #endif

@@ -1334,6 +1334,19 @@ mu_is_proto (const char *p)
   return 0;
 }
 
+int
+mu_mh_delim (const char *str)
+{
+  if (str[0] == '-')
+    {
+      for (; *str == '-'; str++)
+	;
+      for (; *str == ' ' || *str == '\t'; str++)
+	;
+    }
+  return str[0] == '\n';
+}
+
 char *
 __argp_base_name (const char *arg)
 {