[Documentation] -d returns true for symlink to directory

[Adam McKenna]

BASH Man page conditional expressions:

       -d file

              True if file exists and is a directory.

This is also stated at https://www.gnu.org/software/bash/manual/bashref.html

The operator also returns True if the file exists and is a symlink to a directory

-bash-4.1$ file foo

foo: directory

-bash-4.1$ file bar

bar: symbolic link to `foo'

-bash-4.1$ if [ -d bar ]; then echo "bar is a directory"; fi

bar is a directory

-bash-4.1$ if [ -h bar ]; then echo "bar is a symlink"; fi

bar is a symlink

-bash-4.1$ bash -version

GNU bash, version 4.1.2(1)-release (x86_64-redhat-linux-gnu)

Copyright (C) 2009 Free Software Foundation, Inc.

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.

If this is intended behavior, the manual page and other documentation should be updated to reflect it.

Thanks.