[ksh93-integration-discuss] Patch to remove some gloval vars in libcmd...

[Casper.Dik at Sun.COM]

>On 10/30/06, Roland Mainz <roland.mainz at nrubsig.org> wrote:
>> Attached is a small patch ("ksh93_libcmd_killglobalvars001.diff.txt")
>> for ast-ksh.2006-09-12 which significantly reduces the size of the
>> global variables in libcmd
>Why do you think the global variable size needs to be reduced? Is
>there anything especially bad when a program uses global variables?

It's a Solaris rule: no variable or function in a library should be
visible unless defined as an interface.

But there's a bigger issue: any variable in a program
will be mapped to the libcmd variable of the same name, so
in essence libcmd steals a large chunk of user namespace and may
cause application breakage as a result.

Casper