More fine-grained testing of the possible shell execution options.

First, we test the noglob option.

  $ cat > test.sh << EOF
  > set -f
  > touch a.txt b.txt
  > ls *.txt
  > EOF

  $ sh test.sh
  ls: cannot access '*.txt': No such file or directory
  [2]
  $ msh test.sh
  ls: cannot access '*.txt': No such file or directory
  [2]

No unset variable option.

  $ cat > test.sh << EOF
  > echo "The variable is: \$UNSETVAR"
  > set -u
  > echo \$UNSETVAR
  > EOF

  $ sh test.sh
  The variable is: 
  test.sh: line 3: UNSETVAR: unbound variable
  [1]
  $ msh test.sh
  The variable is: 
  UNSETVAR: unbound variable
  [1]