Creates a File with the given argument from the command line.
The value of arg can be either a URI, an absolute path or a relative path resolved relative to the current working
directory. This operation never fails, but the returned object might not support any I/O operation if arg points to a
malformed path.
Note that on Windows, this function expects its argument to be in UTF-8 -- not the system code page. This means that you should not use
this function with string from argv as it is passed to main.
get_command_line will return a UTF-8 version of the commandline.
Application also uses UTF-8 but
create_file_for_arg may be more useful for you there. It
is also always possible to use this function with OptionContext arguments
of type g_option_arg_filename.
| arg |
a command line string |