Re: (j.|.)

[Lawrence Velázquez <larryv@xxxxxxx>]

On Tue, Jan 31, 2023, at 7:21 PM, Ray Andrews wrote:
> On 2023-01-31 15:33, Lawrence Velázquez wrote:
>> Search for "x|y" in zshexpn(1). 
> No completions.

I don't know you're talking about.  Just run "man zshexpn" and
search for "x|y".  (You might have to escape the "|".  Alternately,
search for "Glob Operators" and find it by eye.)

>> Search for "Subscript Flags" in zshparam(1), then find the "I" flag.
> Ok, I have that one about understood.  So many tricks attach to 
> associative arrays!

The flag is not limited to associative arrays.

	% foo=axaybxby
	% print ${foo[(I)a?]}
	3
	% bar=(ax ay bx by)
	% print ${bar[(I)a?]}
	2
	% typeset -A baz=(ax 1 ay 2 bx 3 by 4)
	% print ${baz[(I)a?]}
	ax ay

-- 
vq