special_env_vars.py: add GLOBSORT to the environ_filter set

The traditional behaviour of bash has been to sort the words produced by
pathname expansion by name, in ascending lexicographical order, and in
accordance with the collation defined by the 'LC_COLLATE' variable.
However, bash-5.3 introduces the new 'GLOBSORT' variable which provides
a means of controlling how the words are sorted. For example, setting
GLOBSORT="-mtime" will sort by reverse order of modification time.

Given that bash is capable of inheriting this variable from its process
environment, portage must not be allowed to propagate the variable to
the "ebuild.sh" utility or any other programs that it executes. To that
end, incorporate the 'GLOBSORT' variable into the 'environ_filter' set
defined by the "special_env_vars.py" unit.

See-also: 8a607ed
Signed-off-by: Kerin Millar <[email protected]>
Signed-off-by: Sam James <[email protected]>

Author: Kerin Millar

lib/portage/package/ebuild/_config/special_env_vars.py

@@ -265,6 +265,7 @@
         "MANPATH",
         "USER",
         # variables that break bash
+        "GLOBSORT",
         "HISTFILE",
         "POSIXLY_CORRECT",
         # portage config variables and variables set directly by portage