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st: Re: adding a filename extension

From   Kit Baum <>
Subject   st: Re: adding a filename extension
Date   Tue, 11 Oct 2005 09:30:30 -0400

I understand why Stata might use this algorithm, but if I had designed it, I would not have done it that way... "looking forward for a period" fails miserably on any of my files with names like directors.tenure.proxy.sep2005.dta, which are perfectly legal under *nix variants. Searching BACKWARD from the end of the filename would be a much better way to determine whether there is a file extension. (That does not preclude Stata making a mistake with a file lacking .dta, but then it is the user's problem, not Stata's).

Kit Baum, Boston College Economics

On Oct 11, 2005, at 2:33 AM, Allenwrote:

Stata determines whether or not a file has an extension in the same
way across all operating systems.  It starts at the beginning of
the filename and looks forward for a period.  If one is found,
then Stata determines the file has an extension and will not add

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