On Thu, 1 Feb 2007, Bruce Momjian wrote:
> From: Bruce Momjian <[EMAIL PROTECTED]>
> Tom Lane wrote:
> > 3606c3606
> > <                    errmsg("aggregate function calls cannot be nested")));
> > ---
> > >                    errmsg("aggregate function calls may not be nested")));
> >
> > I don't think that this is an improvement, or even correct English.
> >
> > You have changed a message that states that an action is logically
> > impossible into one that implies we are arbitrarily refusing to let
> > the user do something that *could* be done, if only we'd let him.
> >
> > There is relevant material in the message style guidelines, section
> > 45.3.8: it says that "cannot open file "%s" ... indicates that the
> > functionality of opening the named file does not exist at all in the
> > program, or that it's conceptually impossible."
> Uh, I think you might be reading the diff backwards.  The current CVS
> wording is "cannot".

No, Bruce, he got it exactly right: "cannot" indicates, as Tom put it,
"logical impossibility," whereas "may not" suggests that something could
happen but it's being prevented. His parsing of the english was spot-on.


Richard Troy, Chief Scientist
Science Tools Corporation
510-924-1363 or 202-747-1263
[EMAIL PROTECTED], http://ScienceTools.com/

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