Lua: Fixed keyboard shortcuts to accomodate with full path names now used. Users who had shortcuts should clear them, from the list of shortcuts in Help screen.

git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@1762 416bcca6-2ee7-4201-b75f-2eb2f807beb1

src/io.h

@@ -99,12 +99,21 @@ void For_each_file(const char * directory_name, void Callback(const char *));
 /// Scans a directory, calls Callback for each file or directory in it,
 void For_each_directory_entry(const char * directory_name, void Callback(const char *, byte is_file, byte is_directory, byte is_hidden));
 
-
 ///
 /// Creates a fully qualified name from a directory and filename.
 /// The point is simply to insert a PATH_SEPARATOR when needed.
 void Get_full_filename(char * output_name, char * file_name, char * directory_name);
 
+///
+/// Appends a file or directory name to an existing directory name.
+/// As a special case, when the new item is equal to PARENT_DIR, this
+/// will remove the rightmost directory name.
+/// reverse_path is optional, if it's non-null, the function will
+/// write there :
+/// - if filename is ".." : The name of eliminated directory/file
+/// - else: ".."
+void Append_path(char *path, const char *filename, char *reverse_path);
+
 ///
 /// Creates a lock file, to check if an other instance of Grafx2 is running.
 /// @return 0 on success (first instance), -1 on failure (others are running)