Re: [TCLCORE] CFV warning: TIP #615: string is index

[Jan N. <jan...@gm...>]

Op ma 17 nov 2025 om 18:17 schreef Ashok:
> Further, it also leads to incompatibilities with Tcl 9.
>
> Tcl 9:
>
> % lindex {a b c} {}
> a b c
>
> TIP 615:
> % lindex {a b c} {}
> (empty string)


Hm. Did you actually try that, or did you derive it from the TIP?
I'm getting this with the TIP #615 branch:
    $ tclsh9.1
    % lindex {a b c} {}
    a b c
So there is no incompatibility at all.

Explanation: 'lindex' doesn't have an index as the first argument,
its argument is a list of indexes.   I'l clarify this in the TIP.

This also means, the remainder of your argumentation on
consistency doesn't make much sense to me.

> % lsearch -index [list {}] {{a 1} {b 0} {c 2}} 0
> Empty string cannot be compiled as index

That's clearly a bug. I'll have a look at it. Thanks!

       Jan Nijtmans