https://bugs.kde.org/show_bug.cgi?id=459630
Bug ID: 459630
Summary: Bindings for keys using xorg Mode_switch do not work
Classification: Applications
Product: kate
Version: 22.08.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: part
Assignee: kwrite-bugs-n...@kde.org
Reporter: em...@scgtrp.net
Target Milestone: ---
Created attachment 152400
--> https://bugs.kde.org/attachment.cgi?id=152400&action=edit
screenshot of garbage produced when binding an unusual key
SUMMARY
I have mapped my right alt key to `Mode_switch`, and in the second group it
switches to, I have hjkl bound to the arrow keys. These are recognized as arrow
keys in every application except Kate and KWrite, including other Qt and KDE
applications (I've tried Quassel and Okular). In Kate, Mode_switch + k does
nothing.
Additionally, if I try binding new shortcuts to these keys, the binding appears
as "[garbage], Up" (as two separate keys, not "[garbage] + Up") and does not do
anything when pressed. (Screenshot of garbage attached.)
This appears to be https://bugs.kde.org/show_bug.cgi?id=256653, or at least
closely related. That bug was closed in 2013, supposedly not reproducible after
moving from Qt 4 to 5.
STEPS TO REPRODUCE
1. $ xkbcomp $DISPLAY keymap.tmp
2. Edit keymap.tmp, e.g.:
@@ -1291,7 +1291,8 @@
};
key <AC08> {
type= "ALPHABETIC",
- symbols[Group1]= [ k, K ]
+ symbols[Group1]= [ k, K ],
+ symbols[Group2]= [ Up, Up ]
};
key <AC09> {
type= "ALPHABETIC",
@@ -1430,7 +1431,7 @@
type= "PC_ALT_LEVEL2",
symbols[Group1]= [ Print, Sys_Req ]
};
- key <RALT> { [ Alt_R, Meta_R ] };
+ key <RALT> { [ Mode_switch ] };
key <LNFD> { [ Linefeed ] };
key <HOME> { [ Home ] };
key <UP> { [ Up ] };
3. $ xkbcomp keymap.tmp $DISPLAY
4. Try right alt + K in your shell; this should be recognized as the up arrow
key.
5. Try right alt + K in a file in Kate; this should move up one line like the
up arrow key would, but does not.
6. Settings -> Configure Keyboard Shortcuts; try binding right alt + K to
something.
OBSERVED RESULT
The bindings don't work, as described above.
EXPECTED RESULT
They work.
SOFTWARE/OS VERSIONS
Kate 22.08.1
KDE Frameworks 5.98.0
Qt 5.15.6
xorg-server 21.1.4
xkbcomp 1.4.5
All of these are from the Arch Linux packages.
ADDITIONAL INFORMATION
I tried a few other unusual keys, with similar results. Hyper_R and dead_acute
do a similar garbled text thing (and dead_acute is ignored for key binding
purposes but typing it followed by 'a' does produce รก). F13 works. xev prints
the correct key codes for all of these.
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