Cannot use options for echo command

[aibou]

Hi there,

When I used echo command in alias function, -n option is not used by echo as follows:

foo =
  !f() {
    echo -n 1
  }; f

$ aws foo
-n 1

But, ls command can use options successfully:

bar =
  !f() {
    ls
  }; f

baz =
  !f() {
    ls -l
  }; f

$ aws bar
file1	file2

$ aws baz
total 0
-rw-r--r--  1 aibou  staff  0  3 16 15:20 file1
-rw-r--r--  1 aibou  staff  0  3 16 15:20 file2

It seems a bug but I can't understand why ONLY echo behave it...