# Clear the variables caching builtins' options when (re-)sourcing
# the completion script.
-unset $(set |sed -ne 's/^\(__gitcomp_builtin_[a-zA-Z0-9_][a-zA-Z0-9_]*\)=.*/\1/p') 2>/dev/null
+if [[ -n ${ZSH_VERSION-} ]]; then
+ unset $(set |sed -ne 's/^\(__gitcomp_builtin_[a-zA-Z0-9_][a-zA-Z0-9_]*\)=.*/\1/p') 2>/dev/null
+else
+ unset $(compgen -v __gitcomp_builtin_)
+fi
# This function is equivalent to
#