On 8 July 2013 17:16, Gustaf Neumann <neum...@wu.ac.at> wrote:
> The problem is not only the caches (otherwise it would have been
> sufficient to exclude the ::tcl::* namespaces from the blueprint), but
> also the definition of proc "clock", which redefines itself in terms of
> an ensemble. This makes it sensitive to the definition order.
>
So should the exclusion of ::tcl from the blueprint mean there should be no
::tcl::clock variables defined from the previous invocations of
::tcl::clock commands in the interpreter after an ns_eval?
> Btw, my impression is that when ":localtime" is used instead of
> ":Tcl/Localtime" ....
>
> proc clock_test {} {
> ns_log Notice [clock format [clock scan now] -format "%Y-%m-%d
> %H:%M:%S" -timezone :localtime]
> return true
> }
>
> ... then everything is fine even when we do not exclude "proc clock"
> from the blueprint. Can you check this?
>
Yes. It's very easy to work around the error.
If you call "clock format" with no timezone option at all, the same error
happens but is wrapped in a "catch".
The timezone is defaulted to :Tcl/Localtime. This is set as
CachedSystemTimeZone. After a ns_eval, the clock code tries to lookup
:Tcl/Localtime in TZData, it's not there so it marks it as a BadTimeZone.
The difference is that it then proceeds to fall back to using :localtime
instead. But :Tcl/Localtime is still flagged as a BadTimeZone.
So we can operationally get round this. We were just concerned it was
exposing a bug.
Whether or not it needs fixing, is definitely debatable!
--
David Osborne
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