This reduces the runtime of "make check TESTSUITEFLAGS='-k \!slow -j128'"
from 4.4 to 3.5 seconds on my computer.
AT_CLEANUP
AT_SETUP([read UTF-16 as Auto])
-AT_KEYWORDS([u8_istream])
+AT_KEYWORDS([u8_istream slow])
AT_CHECK([i18n-test supports_encodings UTF-16 UTF-16BE UTF-16LE])
dnl The "sleep 1" checks for a bug in which u8-istream did not properly
dnl handle receiving data in multiple chunks.
AT_CLEANUP
AT_SETUP([Perl Pspp.t])
+AT_KEYWORDS([slow])
AT_SKIP_IF([test "$WITH_PERL_MODULE" = no])
# Skip this test if Perl's Text::Diff module is not installed.
AT_CHECK([perl -MText::Diff -e '' || exit 77])