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

[Helge Kreutzmann]

Hello Christian,
On Wed, Sep 28, 2005 at 06:46:16AM +0200, Christian Perrier wrote:
> > Anyway this is more general problem but not shadow bug (it is about UTF8
> > support, not about umlauts), so probably nothing should be done in

Well, I think there are two issues here: one about UTF8 support which
was brought up by you on April 13th any my issue, with has nothing to
do with "all caps" and "backspace erases prompt" and UTF8, but with
umlauts the effect, that erasing umlauts changes the terminal settings
as clearly shown in my recent comparison of "ssty -a" output with and
without the "wrong" sequence.

You state, that without UTF 8 everything is fine. So you don't 
experience any problem using the
sequence I stated in my recent reply in a non-UTF8 console (i.e., on
a virtual text console with has not been switched to UTF8)? Did you
try launching vim after using the sequence? Did you compare the output
of "stty -a"

Maybe we should clone this bug, one for the UFT8 issue (where a patch
has been proposed already) and one for "my" issue?

> > shadow. But some program should set that flag *before* login run and
> > *all* terminal emulators should set this flag when run in UTF-8 locale
> > :( 
> 
> 
> The discussion is going way over my head but I think this last
> paragraph just shows that I should actually either close this bug...or
> reassign it to a package.....but which? no-one exactly knows...:-)

Please do not close (I will reopen). I can reproduce my bug very
clearly (on alpha, amd64 and ppc (see below)). Somewhere in the login
code the sequence "<Umlaut>"
"<backspace>" does change the terminal settings as shown above. I just
checked, also my ibook (ppc, using framebuffer) is affected (funnily,
the first console is "broken" in respect to display of umlauts, and
there the error does not occur, but this is not the part of the bug).
If you need more people to test, I can ask a friend of my, who
administers many machines.

> Right?

No. Please tag it "help" if you do not know the cause. I tried to have
a look at the sources, but frankly I don't know how login sets console
properties, hence I did not find the problematic point.

Greetings

          Helge
-- 
Dr. Helge Kreutzmann, Dipl.-Phys.           Helge.Kreutzmann at itp.uni-hannover.de
                       gpg signed mail preferred 
    64bit GNU powered                  http://www.itp.uni-hannover.de/~kreutzm
          Help keep free software "libre": http://www.ffii.de/
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