Edit keys picks up Arabic or something

[jaggzh]

Description of bug

When attempting to assign 'z' to Undo (instead of Shift+z), I noticed a bug that's been happening on my system [in MyPaint] for years: The keystroke goes in as some foreign language -- looks to me like Arabic. Different letters do different things:

z shows:

x:

c:

(I'm pretty sure I reported this years ago.)

Notes:

1. I've had Persian, Arabic, Spanish, etc. keyboard support on my system. Arabic WAS installed at the time I built brushes, libmypaint, and initially ran demo. (The same exact key assignment issue occurs with the 'official' (old!) mypaint from apt install, by the way). 2. I removed all other than English (US) keyboard before trying to test more -- it still does Arabic, but I didn't try rebuilding libmypaint, if that's part of this.
2. I'm not hitting shift when assigning the key!

Steps to reproduce

1. Log into my X11/KDE :) (No don't!)
2. python setup.py demo
3. Edit -> Edit prefs -> keys
4. Try to assign any keystroke

Backtraces or error messages

Oh cool, just found INFO shows the char assigned (again, prefacing each with the kb key I hit):

This went in as z:
INFO: gui.accelmap: Changing entry '<Shift>Arabic_hamzaonyeh': '<Actions>/DocumentActions/Undo'
(I *think* that might be U+0626, or maybe U+08A8)

x:
INFO: gui.accelmap: Changing entry '<Shift>Arabic_hamza': '<Actions>/DocumentActions/Undo'
(Looks like U+0621)

c:
INFO: gui.accelmap: Changing entry '<Shift>Arabic_hamzaonwaw': '<Actions>/DocumentActions/Undo'
(Looks like U+0624)

MyPaint version

v2.5.1-git

Operating System(s)

Linux, Debian

Desktop Environment (Linux)

KDE, X11

Code of Conduct

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[jtojnar]

It does indeed look like Arabic. I am able to get ئ after switching to Arabic layout in GNOME and then pressing z in the Edit Key dialogue. But switching back to English makes z work again for me.

• Do you perhaps have per-window layout switching policy?
• Does the issue only happen after a while (e.g. after you have switched layouts some), or is it there from the time MyPaint is started? If the former, does the issue persist after restarting MyPaint or the computer?

It sounds like something got stuck. I would try re-adding another layout, and then switching to it and switching back to English while in the Edit Key dialogue.

[AesaraB]

Possibly related to #642