Re: wsvt25 backspace key should match terminfo definition

[mlelstv%serpens.de@localhost (Michael van Elst)]

rvp%SDF.ORG@localhost (RVP) writes:

>The kernel currently defines the backspace key as:

>$ fgrep CERASE /usr/include/sys/ttydefaults.h
>#define CERASE          0177

There is no 'defined as', in particular with emulated terminals
that aren't even the same on all platforms.

If you restrict yourself to PC hardware (i386/amd64 arch) then
you probably have either

a PS/2 keyboard -> the backspace key generates a DEL.
a USB keyboard  -> the backspace key generates a BS.

That's something you cannot shoehorn into a single terminfo
attribute and that's why many programs simply ignore terminfo
here, in particular when you think about remote access.

The more appropriate data source is the tty setting that
is also most often inherited from the remote computer.

Terminfo becomes more real when you actually talk to
a specific hardware terminal, e.g. connected to a
serial console. Terminal emulations again add a level
of ambiguity to such 'definitions'.