Re: [TCLCORE] TIP#239 Try/Catch/Finally syntax

[Neil M. <ne...@Cs...>]

On 23 Nov 2008, at 01:01, Andreas Leitgeb wrote:
> Neil Madden <ne...@Cs...> wrote:
>>      try ?-matchcommand cmd? script ?handlers ...? ?finally script?
>
> I don't like that particular option, and I think that glob-like
> matching will be enough for some time, but I would see for "--"
> as an options delimiter before the body (even though no options
> are yet defined) just in case we later notice that we do need any.

I believe I proposed a "--" didn't I?

>
>>  ... {POSIX *} ...
>
> While I find this most practicable, it somehow does strike me as
> odd, that in this particular case, we are *supposed* to use a
> string operation (pattern-matching) on a list ($errorCode).
>
> Perhaps this pattern should be itself taken as a list, and then
> glob-matched element-wise (to the length of the pattern).

This is exactly the purpose of -matchcommand. I'd rather not have to  
come up with an entirely new pattern syntax for lists (matching  
nested sub-lists etc). KISS -- glob as default (as [switch] already  
provides it), and leave freedom to plug in your own scheme.

> That way {POSIX *} would exhibit the same behaviour as is expected,
> but it would be easier to safely match the third element of the
> list, without being trapped by list-string meta-characters.

Lists are strings, so there should be no problem using glob. The only  
problem is if you want to do something more sophisticated, like {FOO  
{BAR *} JIM *}

-- Neil

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