Re: stat vs. "-"

[Eric Blake]

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According to Jim Meyering on 9/29/2009 6:44 AM:
> stat has two modes of operation: the default is to interpret each
> argument as a file on which to call stat or lstat.
> Then there's the --file-system (-f) option.
> 
> The "-" == stdin approach makes sense for the first case.
> Since I couldn't think of a use case for the second,
> I was debating to implement it there regardless,
> for the sake of consistency.  Otherwise, I'd have to
> document that it works only *without* -f.

But how would you make it work *with* -f?  You don't know the path of the
file used to create stdin (and in the case of a pipe, there is no path),
so what would you pass to statvfs?  I don't see any option other than to
go with documenting that -f and - do not work together; and we should make
attempts to mix them fail with an error.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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