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31849: document effect of KSH_ZERO_SUBSCRIPT on the argv special array

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Barton E. Schaefer 2013-10-19 14:29:52 -07:00
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@ -1,3 +1,8 @@
2013-10-19 Barton E. Schaefer <schaefer@zsh.org>
* 31849: Doc/Zsh/params.yo: note effect of KSH_ZERO_SUBSCRIPT
on the arrays of positional parameters e.g. ${argv[0]} vs. $0
2013-10-18 Peter Stephenson <p.w.stephenson@ntlworld.com>
* 31846: Src/exec.c: fix NOEXEC option in execsimple().

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Doc/Zsh/params.yo
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@ -431,9 +431,15 @@ of a shell function, shell script, or the shell itself; see
noderef(Invocation), and also noderef(Functions).
The parameter var(n), where var(n) is a number,
is the var(n)th positional parameter.
The parameter `tt($0)' is a special case, see
noderef(Parameters Set By The Shell).
The parameters tt(*), tt(@) and tt(argv) are
arrays containing all the positional parameters;
thus `tt($argv[)var(n)tt(])', etc., is equivalent to simply `tt($)var(n)'.
Note that the options tt(KSH_ARRAYS) or tt(KSH_ZERO_SUBSCRIPT) apply
to these arrays as well, so with either of those options set,
`tt(${argv[0]})' is equivalent to `tt($1)' and so on.
Positional parameters may be changed after the shell or function starts by
using the tt(set) builtin, by assigning to the tt(argv) array, or by direct