[tex-live] User names too longs or with diacritics on Windows

[Denis Bitouzé]

Hello,

AFAICS, Windows users whose name contains diacritics (very common
in French) experience cryptic troubles with scripts as makeglossaries
that create temporary files whose path contains a shortened version of
their names, for instance:

 C:\Users\CCILE~1\AppData\Local\Temp

for a user named "Cécile" (I guess with Windows XP).

Another trouble, with the same user name: with a default TL
installation,

  kpsewhich --var-value=TEXMFHOME

returns (on Windows 7):

  C:/Users/CÚcile/texmf

Is there a way to prevent this in TL 2013 or at least to warn the users
that they should install TL as a user with a short (at most 8
characters?) and exempt of diacritics name?

Best regards.
-- 
Denis