Re: [TCLCORE] Tcl 9 `expr` bug, int.rep typing

[Donald G P. <don...@ni...>]

On 9/24/24 15:21, Jan Nijtmans wrote:
> Op di 24 sep 2024 om 21:02 schreef Andreas Kupries <and...@gm...>:
>
>     Well, as I said in my initial mail, for extensions providing
>     full-fledged Tcl_ObjTypes, i.e. full conversion to/from a string rep
>     this is indeed not a problem. The next extension command will shimmer
>     the value back to the type it wants. Just a bit of a performance-loss
>     due to the additional shimmer.
>
>
> Thinking about it, there is a way out. The only reason for converting to
> a Tcl list because I want to know whether it can be represented as
> a list with length > 1. We can also check that by verifying the
> string representation for spaces, tabs \n or \r (not counting the ones
> at the beginning or end). A complication is that we should
> not count spaces preceded by '\'. So, a little string trickery,
> but this is cheaper than converting to a Tcl list, so worth
> the trouble.

Take note of the existing internal utility routine TclMaxListLength().

-- 
| Don Porter            Applied and Computational Mathematics Division |
| don...@ni...             Information Technology Laboratory |
| http://math.nist.gov/~DPorter/                                  NIST |
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