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elaborate on 「${arrname[*]}」 and 「"${arrname[@]}"」 for wbx@

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tg
2011-04-23 10:40:27 +00:00
parent 8bc51681b1
commit d69ffbf9e0
1 changed files with 10 additions and 4 deletions
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mksh.1
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@ -1,4 +1,4 @@
.\" $MirOS: src/bin/mksh/mksh.1,v 1.255 2011/04/17 15:43:12 tg Exp $ .\" $MirOS: src/bin/mksh/mksh.1,v 1.256 2011/04/23 10:40:27 tg Exp $
.\" $OpenBSD: ksh.1,v 1.139 2011/03/09 09:30:39 okan Exp $ .\" $OpenBSD: ksh.1,v 1.139 2011/03/09 09:30:39 okan Exp $
.\"- .\"-
.\" Copyright © 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, .\" Copyright © 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
@ -72,7 +72,7 @@
.\" with -mandoc, it might implement .Mx itself, but we want to .\" with -mandoc, it might implement .Mx itself, but we want to
.\" use our own definition. And .Dd must come *first*, always. .\" use our own definition. And .Dd must come *first*, always.
.\" .\"
.Dd $Mdocdate: April 17 2011 $ .Dd $Mdocdate: April 23 2011 $
.\" .\"
.\" Check which macro package we use .\" Check which macro package we use
.\" .\"
@ -1279,10 +1279,11 @@ form
where where
.Ar expr .Ar expr
is an arithmetic expression. is an arithmetic expression.
Array indices are currently limited in Array indices in
.Nm .Nm
to the range 0 through 4294967295, inclusive. are limited to the range 0 through 4294967295, inclusive.
That is, they are a 32-bit unsigned integer. That is, they are a 32-bit unsigned integer.
.Pp
Parameter substitutions take the form Parameter substitutions take the form
.Pf $ Ns Ar name , .Pf $ Ns Ar name ,
.Pf ${ Ns Ar name Ns } , .Pf ${ Ns Ar name Ns } ,
@ -1293,6 +1294,11 @@ or
where where
.Ar name .Ar name
is a parameter name. is a parameter name.
Substitution of all array elements with
.Pf ${ Ns Ar name Ns \&[*]}
and
.Pf ${ Ns Ar name Ns \&[@]}
works equivalent to $* and $@ for positional parameters.
If substitution is performed on a parameter If substitution is performed on a parameter
(or an array parameter element) (or an array parameter element)
that is not set, a null string is substituted unless the that is not set, a null string is substituted unless the