bug#811: 23.0.60; emacsclient -t inserts one char when pressing an arrow key

[Chong Yidong]

> 1. Start emacs -Q
> 2. eval (server-start)
> 3. from a terminal, invoke emacsclient -t some-file
> 4. Press <left>, <right>, <up> or <down>
>
> The first keypress of an arrow key after the emacsclient invokation
> inserts one D, C, A or B.  The next press moves point as expected.  With
> emacsclient -c this does not happen.

Thanks.  I can reproduce this too.  Do you know whether or not this
problem only appeared recently?