warn_() { echo "$@" 1>&$stderr_fileno_; }
fail_() { warn_ "$ME_: failed test: $@"; Exit 1; }
skip_() { warn_ "$ME_: skipped test: $@"; Exit 77; }
-framework_failure_() { warn_ "$ME_: set-up failure: $@"; Exit 1; }
+framework_failure_() { warn_ "$ME_: set-up failure: $@"; Exit 99; }
# We require $(...) support unconditionally.
# We require a few additional shell features only when $EXEEXT is nonempty,