Again, german umlauts in ash command line prompt

[Ralf Friedl]

Alexander Griesser wrote:
> I'm still stuggling with getting the german umlauts (ä,ö,ü, a.s.o)
> working on my thinclient installation.
> The really strange thing is, that it doesn't seem to be a keyboard
> layout problem at all.
>
> When I'm at the ash command prompt, I can _NOT_ type ö, ä, ü and what
> is really strange, I cannot type the § character.
>
> In the following output I tried to enter these characters in the first
> line (you can't see them, because they didn't get accepted).
> In the second line, I used the `read` builtin to fill a variable with
> input and that worked perfectly.
>
> I can reproduce this every time and on all my systems (even with a
> freshly compiled busybox on my desktop system), so I'm sure it has
> nothing todo with keyboard layout settings, language settings, etc.
>
> ~/busybox/busybox-1.9.0 $ ll"!$"$"$
> ~/busybox/busybox-1.9.0 $ read TEST
> äöü"!§$
> ~/busybox/busybox-1.9.0 $
>
> Can anyone reproduce this too?
>   
Yes. I also have strace output:

read(0, "\303", 1)                      = 1
read(0, "\244", 1)                      = 1
read(0, "\303", 1)                      = 1
read(0, "\266", 1)                      = 1
read(0, "\303", 1)                      = 1
read(0, "\274", 1)                      = 1
read(0, "\344", 1)                      = 1
read(0, "\366", 1)                      = 1
read(0, "\374", 1)                      = 1
read(0, "t", 1)                         = 1
write(1, "t", 1t)                        = 1
read(0, "e", 1)                         = 1
write(1, "e", 1e)                        = 1
read(0, "s", 1)                         = 1
write(1, "s", 1s)                        = 1
read(0, "t", 1)                         = 1
write(1, "t", 1t)                        = 1

It seems that the characters are simply ignored, at least there is no 
echo for these characters.
I tried both UTF-8 and ISO encoding.

The "read" builtin doesn't use the line editor, therefor all characters 
are displayed correctly and also assigned to the input variable.

Regards
Ralf Friedl