[Pkg-shadow-devel] Bug#221290: Bug #221290 still here: screen garbled after entering high-ascii characters at login prompt

[Helge Kreutzmann]

Hello,
On Tue, Sep 27, 2005 at 05:09:41PM +0300, Eugeniy Meshcheryakov wrote:
> You can switch terminal to all-caps more easyly: just enter you login in
> all-caps and then password as usual. So, I think it (all-caps) is normal
> behavior (for historic reasons probably).

Yikes! And no, I haven't seen all caps during my bug experience.

> I tried to look at problem with erasing of characters and found that
> kernel uses undocumented (in termios(3)) flag IUTF8. If this flag is not
> set kernel tty driver will interpret characters as single-byte. So some
> program should set this flag when terminal is in UTF8 mode... 
> 
> Attached patch fixes this problem for 'login' when it run under UTF-8
> locale. But on usual system it is run under C locale :(. So, I think
> some other program should do this (console-tools/kbd?), but this will
> not fix problem for terminal emulators :(.

Yes, I do not (yet) use UTF8, so either C or my "normal" locale
(de_DE at Euro) (I am not sure how to find that out). But as posted in my
other mail, somehow login "changes" the values which are seen later on
with "stty -a". Probably (as with the uppercase described above) a
historic decision, if login encounters certain cases, it "set" the
environment in a certain way? If that is not documented somwhere, than
login should simply not do this. If yes, then the admin should be able
to "undo" this in a defined way, if he wants.

Should I try the patch nevertheless?

Greetings

         Helge

-- 
Dr. Helge Kreutzmann, Dipl.-Phys.           Helge.Kreutzmann at itp.uni-hannover.de
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    64bit GNU powered                  http://www.itp.uni-hannover.de/~kreutzm
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