Re: RC_EXPAND_PARAM bug

["Bart Schaefer" <schaefer@xxxxxxxxxxxxxxxx>]

On Jul 29,  2:04am, Zoltan Hidvegi wrote:
> 
> % echo 1${^a}1${^^x}
> 1a1x 1ay 1b1x 1by
> 
> The logic is that the string after the rc-param, 1${^^x}, is expanded,
> producing two strings, 1x y, which is combined with 1a 1b.  It is true
> that this is incompatible with 2.6-beta16 and older, which first expanded
> it to 1a1${^^x} 1b1${^^x} and later this was expanded to 1a1x y 1b1x y.
> Similarily, let i=0; echo ${^a}$[i++] expanded to a$[i++] b$[i++] and
> later to a0 b1, while in zsh-3.0.4 it expands to a0 b0.

Can you generalize this rule for us?  E.g.

% echo ${^a}$[i++]$[++j]${^x}....

where .... is some arbitary number of other substitutions?  Is it just that
it now does everything from right to left instead of left to right?  Why?