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From: "S. Cowles" <scowles@earthlink.net>
Reply-To: scowles@earthlink.net
Organization: personal
To: zsh-users@sunsite.dk
Subject: parameter type differences?
Date: Sun, 16 May 2004 14:34:06 -0700
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I have the following script, with appended output.  There are 3 cases teste=
d,=20
comparing a reference value for parameter "bref" with 3 values of parameter=
=20
"b".  The utility od is used to verify the values of the "bref" and "b"=20
parameters. =20

My question is:  why are the values of "b" not equal to "bref" in cases 1 a=
nd=20
2?  If the issue is parameter type, is there any way to display the paramet=
er=20
type for "b"?

Thank you.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dthe script=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
#!/bin/zsh
emulate -R zsh
bref=3D'
'
echo "case 1."
b=3D'\012'
[[ ${bref} =3D=3D ${b} ]] && echo same || echo diff
echo -n "${bref}" | od -b ; echo -n "${b}" | od -b
echo "case 2."
b=3D'\n'
[[ ${bref} =3D=3D ${b} ]] && echo same || echo diff
echo -n "${bref}" | od -b ; echo -n "${b}" | od -b
echo "case 3."
b=3D'
'
[[ ${bref} =3D=3D ${b} ]] && echo same || echo diff
echo -n "${bref}" | od -b ; echo -n "${b}" | od -b
exit 0
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3Dthe output=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D
case 1.
diff
0000000 012
0000001
0000000 012
0000001
case 2.
diff
0000000 012
0000001
0000000 012
0000001
case 3.
same
0000000 012
0000001
0000000 012
0000001
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D