[konsole] [Bug 460694] New: Pressing Alt-Return (and other key combinations with Alt) enter unexpected characters, too

[Bodo Eggert]

https://bugs.kde.org/show_bug.cgi?id=460694

            Bug ID: 460694
           Summary: Pressing Alt-Return (and other key combinations with
                    Alt) enter unexpected characters, too
    Classification: Applications
           Product: konsole
           Version: 22.08.1
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: keyboard
          Assignee: konsole-devel at kde.org
          Reporter: 7eggert at gmx.de
  Target Milestone: ---

SUMMARY

Pressing Alt-Return (and other key combinations with Alt) enter unexpected
characters, too. I tried finding weather the problems is that the programs
should expect these characters and ignore them or weather they should not be
sent, but by the lack of correct google magic I found no information.

STEPS TO REPRODUCE
1. run hexdump -C (to see the input)
2. Press Alt-Return repeatedly

OBSERVED RESULT

The key generates 18 40 73 1b 0a

EXPECTED RESULT
All programs expect 1b 0a
The extra characters show in the shell or prevent e.g. midnight commander from
working properly. 

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20220915
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.5
Kernel Version: 5.19.8-1-default (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-3320M CPU @ 2.60GHz
Memory: 3.7 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 4000
Manufacturer: Dell Inc.
Product Name: Latitude E6430
System Version: 01

ADDITIONAL INFORMATION

$ echo $TERM
xterm-256color
$ grep meta /etc/inputrc
set meta-flag on
set input-meta on
set output-meta on
set convert-meta off
set enable-meta-key off

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