--- hatari/src/includes/str.h	2019/04/01 07:14:48	1.1
+++ hatari/src/includes/str.h	2019/04/09 08:53:13	1.1.1.5
@@ -1,8 +1,8 @@
 /*
   Hatari - str.h
 
-  This file is distributed under the GNU Public License, version 2 or at
-  your option any later version. Read the file gpl.txt for details.
+  This file is distributed under the GNU General Public License, version 2
+  or at your option any later version. Read the file gpl.txt for details.
 */
 
 #ifndef HATARI_STR_H
@@ -14,10 +14,16 @@
 # include <strings.h>
 #endif
 
-char *Str_Trim(char *buffer);
-char *Str_ToUpper(char *pString);
-char *Str_ToLower(char *pString);
-char *Str_Trunc(char *str);
-bool Str_IsHex(const char *str);
+/* Invalid characters in paths & filenames are replaced by this
+ * (valid but very uncommon GEMDOS file name character)
+ */
+#define INVALID_CHAR '@'
+
+extern char *Str_Trim(char *buffer);
+extern char *Str_ToUpper(char *pString);
+extern char *Str_ToLower(char *pString);
+extern char *Str_Trunc(char *str);
+extern bool Str_IsHex(const char *str);
+extern void Str_Filename2TOSname(const char *src, char *dst);
 
 #endif  /* HATARI_STR_H */