one more stupid idea ?

[Ulrich Schmidt <u.sch.zw@...>]

Hi everyone.

Sometime functions have a varible count of parameters. Most often we 
simply use ... as last parameter. Sometimes it is more expressive to use 
first parameters as optional arguments eg:

    function concat_path(drive, folder, filename);

In case we call this function with filename only, the function have to 
deal with the parameter count by itself and it works in many cases as we 
can see in many lua projects. BUT: The source code is less self descriptive.

A simple way do make the function parameters more descriptive would be 
to allow a "?" in identifiers. for instance:

  function concatPath(drive?, folder?, filename);

Still i have to deal with parameter counts by myself but the function 
header is much more self descriptive. And this patch interferes with 
nothing in existence.

Stupid idea?

greetings.
Ulrich Schmidt.