Bernt Hansen [off-list ref] writes:
Msgcat is available since Tcl 8.1. For really old versions of Tcl
provide a default mc that just returns the text untranslated. This
allows the Tcl version check to return the error in a window instead
of making Tcl abort when attempting to load the msgcat package.
Signed-off-by: Bernt Hansen <redacted>
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I'm not sure if we care about Tcl versions older than 8.1 but this at
least shows the error in the window with the [OK] button.
Both patches sound very sensible.