[konsole] [Bug 461349] New: Most "special" keys broken in konsole with Neo 2 keyboard layout

[Jonas Schäfer]

https://bugs.kde.org/show_bug.cgi?id=461349

            Bug ID: 461349
           Summary: Most "special" keys broken in konsole with Neo 2
                    keyboard layout
    Classification: Applications
           Product: konsole
           Version: 22.08.1
          Platform: Debian testing
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: keyboard
          Assignee: konsole-devel at kde.org
          Reporter: jonas at wielicki.name
  Target Milestone: ---

SUMMARY
When using the Neo2 keyboard layout (setxkbmap de neo, see
https://neo-layout.org/ for a visual reference if you attempt to reproduce
this), Konsole seems to assume that some unspecified modifier is pressed all
the time, causing it to emit incorrect CSI sequences for keys.


STEPS TO REPRODUCE
1. Start konsole
2. setxkbmap de neo
3. Press any arrow key

OBSERVED RESULT
Arrow keys are mapped to their letters (Up -> A, Down -> B, …).

EXPECTED RESULT
Arrow keys navigate the shell history or input buffer.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Debian/testing
(available in About System)
KDE Plasma Version: 5.26.0
KDE Frameworks Version: 5.98.0
Qt Version:  5.15.6
Kernel Version: 6.0.0-2-amd64 (64-bit)
Graphics Platform: X11

ADDITIONAL INFORMATION
This can be tracked down to the aforementioned modifier situation by looking
into Edit Current Profile -> Keyboard -> Default (XFree 4) -> Edit… and using
the input field for testing. The rules which match differ based on which
keyboard layout is used:

Layout   Rule                                     Escape Sequence
de neo   Up-Shift+Ansi+AnyModifier                \E[1;1A
us       Up-Shift+Ansi-AppCursorKeys-AnyModifier  \E[A

This makes me believe that something in konsole, or its dependencies, assumes
that there's some modifier continuously pressed while using the neo2 layout.

As this happens even right after switching layouts, I presume that this is no
lingering state.

I also suspect that this may not affect just konsole; I also noticed that some
other applications shortcuts have stopped working correctly (e.g. the password
prompt of kontact/kmail does not react to the Enter key anymore, I have to
click Ok explicitly) and it may be related. 

If this is true, I'd like to know where to file this and how to help to debug
this further. Is this Qt? Is this some KDE library? How can I help?

-- 
You are receiving this mail because:
You are the assignee for the bug.