Thanks golux! your second opt is what I hope not to use as it can come really lengthy and will be my disaster if something is going to change ( eg. /Usr/ needed to change as /Users/ )... But what you propose remind me something I did yrs ago, do you have any feedback to my update on the post ?

In reply to Re^2: reference to an undefined key by exilepanda
in thread reference to an undefined key by exilepanda

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