Possible bug in 'df' v5.2.1 (--portability switch)

[Torkel Bjørnson]

Hello!


I would like to report a bug in the df program in the
GNU coreutils package.

Here is a proof by example:

$ df --version
df (coreutils) 5.2.1

$ df --portability /
Filesystem          512-blocks      Used Available Capacity Mounted on
/dev/sda1               361278    225408    116596      66% /

$ setenv BLOCK_SIZE human-readable
$ df --portability /
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1             177M  111M   57M  66% /


I think the last output is wrong. Since I request an output
format in compability/POSIX mode, it should ignore the
BLOCK_SIZE environment variable and display the blocksize
in whatever blocksize POSIX define.


Another thing I noticed in the info page for 'df'

`POSIXLY_CORRECT'
    If neither the `COMMAND_BLOCK_SIZE' nor the `BLOCK_SIZE' variables
    are set, but this variable is set, the block size defaults to 512.

Shouldn't the semantic be that when POSIXLY_CORRECT is set, this should
override conflicting switches and/or other env. var. and make all supported
programs behave correctly according to the POSIX standard?
Just my taught on the subject.


Thank you very much for making GREAT software to the world!!!


Best regards,
Torkel Bjørnson

--
I would rather say that a desire to drive fast sports cars is what sets man 
apart from the animals.