Delete key shows read-only buffer error (terminal only)

[flashcode]

Hi,

This is related to issue #212 and PR #213.

When running Emacs in terminal the Delete key still shows: Buffer is read-only: #<buffer *vterm*> (works fine in Emacs launched as graphical app).

If I do this, the problem is fixed:

(define-key vterm-mode-map [deletechar] #'vterm-send-delete)

Maybe this could also be part of the default config?

Also I'm curious to understand the difference of behavior between graphical app and terminal on this specific key: when I do C-h k then press Delete, the help is slightly different, that could explain the different behavior.

In graphical session:

<deletechar> (translated from <delete>) runs the command delete-forward-char
(found in global-map), which is an interactive native-compiled Lisp function in
‘simple.el’.

In terminal (emacs -nw):

<deletechar> runs the command delete-forward-char (found in global-map), which
is an interactive native-compiled Lisp function in ‘simple.el’.

Thanks.