AFAIK the open() API does return immediately with an error, if the file
could not be opened - like if it is already open in an non-shareable
open-mode.

Hi Daniel

I don't understand .. i have done this test: in a session i have opened
the Ifs file with Edtf and in another, in have run the code in the
example; after some minutes the program was still waiting for the file lock
and i haven't received any error ..

Thanks


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