There seems to be a problem with the test harness on Solaris 11.4

[Clinton Bunch <cdb_zsh@xxxxxxxxxxx>]

Every test failed with an error similar to the one down below.


./A01grammar.ztst: starting.
diff: illegal option -- a
usage: diff [-bitw] [-c | -e | -f | -h | -n | -u] file1 file2
       diff [-bitw] [-C number | -U number] file1 file2
       diff [-bitw] [-D string] file1 file2
       diff [-bitw] [-c | -e | -f | -h | -n | -u] [-l] [-r] [-s] [-S 
name] directory1 directory2

Test ./A01grammar.ztst failed: output differs from expected as shown 
above for:
  # Test skipping early to ensure we run the remainder...
  if [[ -n $ZTST_test_skip ]]; then
    ZTST_skip="Test system verification for skipping"
  else
    print "This is standard output"
    print "This is standard error" >&2
    false
  fi
Error output:
This is standard error
Was testing: Test skipping if ZTST_test_skip is set
./A01grammar.ztst: test failed.