Peter Eisentraut <[EMAIL PROTECTED]> writes:
> I doubt that it ever really worked, or could work, to install a new
> version over an old one without deleting the old one first.  This here is
> just one problem.  We can't be making these funny workarounds every time
> the set of installed user visible files changes.  For example, if an older
> version had a header file that the new version doesn't have, then user
> code that includes this file will still be silently broken.

Well, the idea is to make the breakage be not so silent ...

                        regards, tom lane

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