localized `clock format' timezone

From: Ralf Fassel (ralfixx_at_gmx.de)
Date: 04/30/04 

Date: Fri, 30 Apr 2004 12:41:06 +0200

tcl 8.3.3 on Windows 2000

`clock format' includes the timezone specifier, which on my german
system has non-ASCII characters in it:
  Westeuropäische Sommerzeit (Westeurop\344ische Sommerzeit)

However, the string returned by `clock format' is
   Westeuropäische Sommerzeit (Westeurop\303\244ische Sommerzeit)

How can I convince these two bytes to be an ä? I tried `encoding
convertfrom', but this simply returned the string unchanged (most
probably because the internal rep in TCL already has handled these).

R'