Since commit 12ec1304fc, the "parallel test execution" fails when I force use of zsh 4.3.6 on GNU/Linux. The simple reason for that is that parallel execution is not turned on for this zsh, because the
dnl Do we have job control? if (set -m && set +m) >/dev/null 2>&1; then test fails for non-interactive zsh. Do you have other results for other zsh versions? If not, I guess that means effectively parallel autotest currently should be used for bash only, and BUGS and autotest.at should reflect that. Cheers, Ralf