Re: [TCLCORE] [option readfile] unicode support

Donald G Porter:
>> What encoding(s) are the nine files Bwidget/lang/*.rc stored in?

On 02/02/2016 10:25 AM, Harald Oehlmann wrote:
> da.rc (Danish) is in a iso-latin variant

Yes, it looks like many of the other *.rc files from BWidget
are stored in iso8859-1.  That leads to trouble.

package require msgcat
msgcat::mclocale da
package require BWidget
MessageDlg .m -type abortretryignore -icon question

See the attachment screenshot image for the bad title that results.

If you don't see a bad title on your own system, then I can only guess 
that Tk passes bytes for its title display, and Windows is happier to 
accommodate iso8859-1 than the graphics system I'm using on Linux.

At least this demos that BWidget is nonportable on this, and can
become portable by converting all its *.rc files to utf-8.

Over more time, it's likely better to not use *.rc files for this at
all, but convert to use of actual message catalogs.

So the surprising conclusion is that Tk 8.5.18 not only accepts
utf-8 encoded X resource files, it really only works reliably with
them.

My tentative conclusion is that the recent change to [option readfile]
is a mistake, and at the very least unsuitable for Tk 8.5.19.

I'm still interested in any background available about why Androwish
has moved in that direction. There may well still be background facts
for me to learn.

-- 
| Don Porter            Applied and Computational Mathematics Division |
| dona...@nist.gov             Information Technology Laboratory |
| http://math.nist.gov/~DPorter/                                  NIST |
|______________________________________________________________________|

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