[Bug 394570] Re: Backspace via SSH only deletes last byte of characters (no IUTF8 handling, requires standardisation work)

[Egmont Koblinger]

I don't understand: why does it require an extension to SSH protocol?

Sure, one possible way would be to make ssh forward this bit of
information. However, the IUTF8 flag should be set consistently with the
locale (the character set part), which is not forwarded by ssh either -
but still set on the server.

Another approach could be to do whatever happens to the locale: when you
log on remotely, someone sets this environment variable for you. Whoever
does this (pam, login script, whatever) could also modify the terminal
settings, couldn't it? Taking this approach, you don't need to modify
the protocol, just make sure that whenever someone logs in via ssh, they
don't only get $LANG and stuff but also the stty iutf8 bit set
correctly.

Moreover, I believe the meaning of
/sys/module/vt/parameters/default_utf8 is that every newly allocated
terminal gets the iutf8 flag set automatically to this value by the
kernel. Should the ssh server or login procedure be unable to get the
locale information, they ought to respect whatever is set here. This yet
again doesn't require extending the protocol.

-- 
Backspace via SSH only deletes last byte of characters (no IUTF8 handling, requires standardisation work)
https://bugs.launchpad.net/bugs/394570
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