openssh unix dev - Oct 2020 - SSH client and bracketed paste mode

On 10/30/20 5:22 PM, Thorsten Glaser wrote:
> Hi,
> 
> lemme correct that for you:
> 
>> Using a terminal with bracketed paste mode (see [0], [1]), I
>> am not able to paste text while being in the "~C" command
line
>> mode.
>>
>> The reason for that is, that while being in that special mode,
> the terminal sends the bracketed paste control characters to
> OpenSSH, which does not expect it.
> 
>> I tried to figure out, which of the three involved components
>> might be at fault. The component stack is:
>>
>> * terminal
>> * local shell
>> * ssh
>> * remote shell
> 
> This works as follows:
> 
> ? terminal sets up normal operation
> ? local shell starts ssh
> ? ssh starts remote shell on the terminal
> ? remote shell instructs the terminal to switch to bracketed paste mode
> 
> Now when you use an SSH escape, ssh temporarily accesses the
> terminal, but bracketed paste mode is still active, which
> leads to confusion.
It would still be nice if SSH implemented support for it.  Bracketed
paste mode is a useful security feature, when combined with terminals
that refuse to paste control characters.

Sincerely,

Demi
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On Sat, 31 Oct 2020, Demi M. Obenour wrote:
> It would still be nice if SSH implemented support for it.  Bracketed
I wondered about this for a long while, too.

But I think it cannot be expected of *any* Unix application
to implement bracketed paste mode support especially if it
doesn?t even really do anything terminal-specific itself.

That would be like requiring cat to strip out these control
sequences.

So it?s probably better to not even start.

bye,
//mirabilos
-- 
?MyISAM tables -will- get corrupted eventually. This is a fact of life. ?
?mysql is about as much database as ms access? ? ?MSSQL at least descends
from a database? ?it's a rebranded SyBase? ?MySQL however was born from a
flatfile and went downhill from there? ? ?at least jetDB doesn?t claim to
be a database?	(#nosec)    ??? Please let MySQL and MariaDB finally die!