Include problem

[Alvise Belotti <nospam@thanx>]

Hi all,
I hope my bad english will be understandable.

I have a problem with include files. 

Basically I want include a file -if it exist- otherwise include a
default file
#include file.inc (if it exist) else include default.inc
(the name of the file to be included has to be defined run-time)

>From wml_p1_ipp

$(name:-string)
`Use Default String': The standard interpolation with
a default value.

 if (exists(name))
     expandto(valueof(name))
 else
     expandto(string)
But

#include "$($(WML_SRC_BASENAME).inc:-default.inc)"

include default.inc all the time (also if $(WML_SRC_BASENAME).inc
exist)
It seems $(WML_SRC_BASENAME).inc inside $(name:-string) will be expanded 
to nothing.

what i am doing wrong, here?

Ciao, Alvise
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