extglob features less useful since shell scripts turn them off

[Jim Thomas]

Configuration Information [Automatically generated, do not change]:
Machine: i686
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i686' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i686-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
-DHAVE_CONFIG_H   -I.  -I../bash-3.2p17si2 -I../bash-3.2p17si2/include 
-I../bash-3.2p17si2/lib   -Os
uname output: Linux aa 2.6.39.3-v11 #9 SMP PREEMPT Tue Dec 13 11:07:11 HST 2011 
i686 GNU/Linux
Machine Type: i686-pc-linux-gnu

Bash Version: 3.2
Patch Level: 17
Release Status: release

Description:
        My interactive environment contains some shell functions that are
        cleaner making use of "extglob on" of the interactive shell.  But
        as soon as any other shell script is run they cause, e.g.,

        aa ~ > bashbug
        /bin/sh: pushdHelper: line 14: syntax error near unexpected token `('
        /bin/sh: pushdHelper: line 14: ` +@([1-9])*([0-9]))'
        /bin/sh: error importing function definition for `pushdHelper'

        because the script is running "extglob off" and trying to interpret
        the functions already in the environment.

Repeat-By:
        Put an extglob feature in a function in the environment and run
        a shell script.

:(

Mahalo,
Jim