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Tcl and UCS-4 support

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Larry W. Virden

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Aug 24, 2006, 9:26:58 AM8/24/06
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In the release notes for Tcl 8.4.4, I read:

* Enable -DTCL_UTF_MAX=6 during build to indicate UCS-4 mode.
This is not the recommended build mode (UCS-2 remains the default).

I'm wondering if people out there have tried this. And, in particular,
what are the consequences in using a UCS-4 based Tcl with other
extensions? I'm not a Unicode expert - is this something that I would
need to create as a special build, so as not to break everything else?

Has there been any discussion of upgrading Unicode support within the
Tcl community so that all extensions were UCS-4 compatible?

Thanks!

suchenwi

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Aug 24, 2006, 9:41:36 AM8/24/06
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Larry W. Virden schrieb:

Didn't RedHat build and distribute Tcl with 4-byte Unicode (to the
effect that it didn't play with any other extensions)? The reactions
I've heard were not positive...

bill...@alum.mit.edu

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Aug 25, 2006, 3:58:08 AM8/25/06
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I tried building Tcl with UCS-32 support and it worked alright but
wasn't very useful for many purposes since Tk still didn't handle
anything outside the BMP.

Larry W. Virden

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Aug 29, 2006, 10:06:30 AM8/29/06
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Thanks for the info. In my case, the developer says that he only needs
the tcl layer. I'm not quite certain about that, but at least I know it
does build and seems to work okay.

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