[Bug 52531] New: Can not use backspace to delete in cmd in xterm

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52531

Bug ID: 52531
           Summary: Can not use backspace to delete in cmd in xterm
           Product: Wine
           Version: 7.1
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: cmd
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

When running cmd with `wine cmd`, the shell run Wine's cmd.
But when I press "Backspace" on the keyboard to delete the previous character,
the Wine's cmd instead display "^H" instead of delete the character.

The terminal emulator I'm using is `xterm`, which use "Backspace" control
character (\x08) instead of "Delete" control character (\x7f) as the Erase
character.

Terminal output
```
$ wine cmd
Microsoft Windows 6.1.7601

Z:\home\huupoke12>aaaa^H^H^H
```

[Bug 52531] Can not use backspace to delete in cmd in xterm

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52531

Eric Pouech  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #1 from Eric Pouech  ---
wine expects a vt220 capable terminal (which is normally what Linux provides)

what's you TERM env variable set to? (under xterm)

not sure we want to support all kinds of underlying terminal capabilities

using 'TERM=vt220 wine cmd' should work around the issue
(assuming vt220 termcap/terminfo is installed on your box)

[Bug 52531] Can not use backspace to delete in cmd in xterm

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52531

--- Comment #2 from Nguyễn Chính Hữu  ---
My TERM variable (under xterm) is "xterm".
Setting TERM variable to "vt220" doesn't work around the issue.

I think most of Linux distro also set TERM variable to "xterm" or
"xterm-256color", so I don't think xterm is an unpopular terminal emulator.

[Bug 52531] Can not use backspace to delete in cmd in xterm

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52531

--- Comment #3 from Eric Pouech  ---
can't reproduce here: xterm works fine

----------

so it's really how the terminfo/termcap of xterm is defined

I suppose 'infocmp xterm | grep kbs'
shows kbs=^H (or similar) on your side

while I have
kbs=^?

which is what we expect (and what a "standard" configuration should be)

----------

the work around is to find a suitable $TERM value for running cmd.exe
(perusing a bit, maybe 'gnome' could work) (again 'infocmp gnome | grep kbs'
should tell)

[Bug 52531] Can not use backspace to delete in cmd in xterm

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=52531

--- Comment #4 from Nguyễn Chính Hữu  ---
It seems the problem is partly caused by the inconsistency between upstream
developer and downstream distributors of defining the kbs.

In the upstream, the default kbs of xterm is "^H":
https://invisible-island.net/ncurses/terminfo.src.html#tic-xterm_kbs
So I don't think it is a "standard configuration" if the upstream developer
doesn't make it default but something else.

Arch Linux doesn't override it, follows the upstream configuration:
https://github.com/archlinux/svntogit-packages/blob/packages/ncurses/trunk/P...
Gentoo Linux also seems to not override it:
https://gitweb.gentoo.org/repo/gentoo.git/tree/sys-libs/ncurses/ncurses-6.2_...

Debian (and Ubuntu) overrides it with "del":
https://sources.debian.org/src/ncurses/6.2%2B20201114-2/debian/rules/#L153
Fedora overrides it with "DEL":
https://src.fedoraproject.org/rpms/ncurses/blob/rawhide/f/ncurses.spec#_139
openSUSE overrides it with "del" (line 531):
https://build.opensuse.org/package/view_file/Base:System/ncurses/ncurses.spe...

[Bug 52531] Can not use backspace to delete in cmd in xterm

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=52531

Eric Pouech  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #5 from Eric Pouech  ---
*** Bug 58165 has been marked as a duplicate of this bug. ***

[Bug 52531] Can not use backspace to delete in cmd in xterm

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=52531

--- Comment #6 from [e-mail] ---
I get this problem with wine10.6 + qterminal + debian bookworm x64.

[Bug 52531] Can not use backspace to delete in cmd in xterm

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=52531

--- Comment #7 from [e-mail] ---
On wine10.6+qterminal+debian bookworm x64, the following settings fixed this
problem.
File menu -> Preference -> Behavior -> Emulation -> “linux”