Zsh Mailing List Archive
Messages sorted by: Reverse Date, Date, Thread, Author

Some documentation on $0 vs. KSH_ZERO_SUBSCRIPT



Some clarification that $0 is not exactly a positional parameter.

diff --git a/Doc/Zsh/params.yo b/Doc/Zsh/params.yo
index 97087a1..9d951bb 100644
--- a/Doc/Zsh/params.yo
+++ b/Doc/Zsh/params.yo
@@ -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



Messages sorted by: Reverse Date, Date, Thread, Author