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Date: Fri, 13 Mar 2015 11:42:36 +0100
From: Michal Politowski <mpol@charybda.icm.edu.pl>
To: zsh-users@zsh.org
Subject: Re: (s,:,) made right ("" is also an element)
Message-ID: <20150313104236.GA31303@meep.pl>
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References: <20150313101208.GA5325@ramirez.u-strasbg.fr>
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On Fri, 13 Mar 2015 11:12:08 +0100, Marc Chantreux wrote:
> hello,=20
>=20
> say i have
>=20
>     PATH=3D"/usr/bin::/bin"=20
>     print -l ${(s,:,)PATH}
>     foo=3D( ${(s,:,)PATH} )
>     print $#foo
>=20
> because i have an empty element (which is also an element)
>=20
> i got
>=20
>     /usr/bin
>     /bin
>     2
>=20
>=20
> i expect
>=20
>     /usr/bin
>=20
>     /bin
>     3=20
>=20
> does someone know how to fix zsh?

print -l "${(@s,:,)PATH}"
foo=3D("${(@s,:,)PATH)")

It's described in the manual:
              For historical reasons, the usual behaviour that empty
              array elements are retained inside double quotes is
              disabled for arrays generated by splitting; hence the
              following:

                     line=3D"one::three"
                     print -l "${(s.:.)line}"

              produces two lines of output for one and three and elides
              the empty field.  To override this behaviour, supply the
              "(@)" flag as well, i.e. "${(@s.:.)line}".

--=20
Micha=B3 Politowski
Talking has been known to lead to communication if practiced carelessly.