Re: [TCLCORE] Substituted error stacks

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

On 9 Feb 2008, at 10:43, Alexandre Ferrieux wrote:
> ...
>
> - adding another global is seamless. The slate being empty, and with
> years of experience with ::errorInfo, we are in a better position to
> get it right at once.
> Moreover, the new global may work hand-in-hand with the old one,
> giving only complementary info, and making it easy to scan both in
> sync: to do that, ::errorStack could contain string positions in
> ::errorInfo in addition to the requested [info level 0]'s.

Adding a -errorstack option to the option dictionary seems like a  
much cleaner way of doing things. ::errorStack seems like a fairly  
common name to be actually used in existing code, so you'd at least  
want to make it ::tcl::errorStack.

One argument for using a variable though is persistence: e.g.,  
bgerror has no access to any error options dictionary, so it has to  
rely on global variables (or some command interface).

-- Neil

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