With the other non-standard changes being made to the default
environment, I wonder if it is time to finally bite the bullet and merge
some of the XPG4 and Sun commands -- some of the differences exist for
some rather silly (IMO) semantic differences that portable code should
not rely on.
For example, rm differs in some very subtle ways about conflicts of -f
and -i options, and handling of non-readable/writable directories.
chown differs in the way symbolic links are followed in the presence of
the -r flag.
XPG4 awk is really just nawk.
XPG4 grep has more flexible regular expression support (see -E and -F)
who has slightly different default output for POSIX.
XPG4 du is noisy by default on unreadable directories, and uses a space
instead of a tab.
I'm sure there are some others like this.
I'm just thinking, isn't it time we just bit the bullet and told our
users to start using the POSIX defaults, instead of continuing to supply
the legacy compatibility stuff forever.
It would save a little space, and maybe we could get rid of /usr/xpg4/bin ?
-- Garrett
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