Am 10.07.13 10:41, schrieb Rainer Müller:
In the same way we currently have a local implementation of try based
upon TIP #89, we could make it compatible with TIP #329/Tcl 8.6 instead.
This could mean just importing the one from Tcllib (haven't checked its
license) and make it work on Tcl 8.4. I don't think there is a need to
wait until we have a bundled Tcl 8.6.
the TIP#329 implementation in Tcllib makes use of the following Tcl 8.5
features:
lassign, dict, {*}
convert the single "lassign" in the try-implementation in plain tcl8.4
is easy,
"{*}" doable, but dict requires a c-based extension
(see http://www.flightlab.com/~joe/gutter/packages/dict.html)
so, the difference in effort is similar to the bundled version.
From my point of view, most interesting options are:
- since the try-usage in macports is limited, one should be
able to modify the mac-ports-included try implementation to
handle instead of "catch" the "on" variant from TIP#329.
That would at least ease a migration phase.
- For a bundled tcl 8.6 implementation, the biggest unknown for
me is the availability of compilers/configure-tools depending on
mac os x platform. Would shipping of a binary tcl8.6 be an option?
-gustaf
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