Comment # 14 on bug 957295 from Dr. Werner Fink

OK ... then we have for bourne shell (not only bash)

 cat /etc/profile.d/at-spi2.sh
 _gnome_toolkit=$(gsettings get org.gnome.desktop.interface
toolkit-accessibility)
 if test -z "$_gnome_toolkit" -o "$_gnome_toolkit" = false ; then
     NO_AT_BRIDGE=1
     export NO_AT_BRIDGE
 fi
 unset _gnome_toolkit

and fot tcsh

 cat /etc/profile.d/at-spi2.csh
 set _gnome_toolkit=`gsettings get org.gnome.desktop.interface
toolkit-accessibility`
 if ( ${%_gnome_toolkit} == 0 || $_gnome_toolkit == false ) setenv NO_AT_BRIDGE
1
 unset _gnome_toolkit

btw: Why does this the API of the GNOME libraries do not on their own?