Re: Delete key no longer works after update to 6.0_BETA2

["David Lord" <netbsd%lordynet.org@localhost>]

On 1 Jun 2012 at 13:19, Julian Coleman wrote:

> Hi,
> 
> > I tried with vt220 changed to pcvt25 and that seems to 
> > have my delete key working.
> 
> I'm not sure that I understand the underlying problem here.  There are four
> things to consider:
> 
>   1) the key or sequence that is sent when the "delete" or "backspace" keys
>      are pressed
> 
>   2) the terminal erase character (stty erase, used for command-line erase)
> 
>   3) the termcap/terminfo entry (which describes the backspace and delete key
>      sequences (kb/kbs and kD/kdch1)
> 
>   4) how the application determines the delete key sequence (tty settings,
>      termcap/terminfo, etc.)
> 
> So, it would be nice to check all these.  It seems that 2) and 3) haven't
> changed (you mentioned stty erase ^?, and I looked at /usr/share/misc/termcap
> and /usr/share/misc/terminfo).  If you type:
> 
>   echo <ctrl-V><delete> | vis
> 
> what output do you see?  (<ctrl-V> is control-v, but control-6 for ksh)  I
> see:


From 'vi' the 'delete' on the 6 keys pad gives 
"^? isn't a vi command"  same with netbsd-5.

'Delete' from numeric keypad tabs 1 character right
rather than erase of character under cursor.

There is no problem with backspace.

$ set | grep TERM               = same as NetBSD-5
TERM=vt220

$ echo ^[[3~ | vis    = same as NetBSD-5
\^[[3~


David


>   \^?
> 
> (this is encoded as \177), and I see that the pcvt25 entry has that set for
> backspace (kb/kbs), where vt220/wsvt25 have ^H (<ctrl-h>).
> 
> Also, note that some shells will accept both ^H and ^? for erase, so you
> can get the situation where the delete key appears to work in the shell but
> not in other applications (our sh/ksh do this after `set -o vi` or `set -o
> emacs`, as does bash).
> 
> Thanks,
> 
> J
> 
> -- 
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