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Bug 2230440

Summary:	Direct input in Tk with XMODIFIERS can get scrambled (out of order) sometimes
Product:	Red Hat Enterprise Linux 8	Reporter:	Steve Barcomb <sbarcomb>
Component:	ibus	Assignee:	fujiwara <tfujiwar>
Status:	CLOSED MIGRATED	QA Contact:	QE Internationalization Bugs <qe-i18n-bugs>
Severity:	high	Docs Contact:
Priority:	high
Version:	8.8	CC:	eng-i18n-bugs, tpopela
Target Milestone:	rc	Keywords:	MigratedToJIRA, Reopened
Target Release:	---	Flags:	pm-rhel: mirror+
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-09-05 16:17:30 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Steve Barcomb 2023-08-09 12:45:35 UTC

This is a continuation of the issue found https://bugzilla.redhat.com/show_bug.cgi?id=2170830#c52 

Sample program to reproduce the issue:

#!/usr/bin/perl
use strict;
use warnings;
use Tk;

# Create the main window
my $window = MainWindow->new;
$window->title("Input Dialog");

# Create a label to display the instructions
$window->Label(-text => "Enter your input:")->pack;

# Create an entry widget to input the text
my $entry = $window->Entry->pack;

# Create a button to submit the input
$window->Button(
    -text    => "Submit",
    -command => sub {
        my $input = $entry->get;  # Get the input from the entry widget
        print "Input: $input\n";  # Print the input to the console
        $window->destroy;         # Close the window
    }
)->pack;

# Run the Tk event loop
MainLoop;


Setting XMODIFIERS=@im=ibus works around the issue for now.

Comment 1 fujiwara 2023-08-10 02:05:13 UTC

(In reply to Steve Barcomb from comment #0)
> Setting XMODIFIERS=@im=ibus works around the issue for now.

Seems you use a simple X11 application.
IBus provides the plugin of X11, GTK or QT so if you don't set XMODIFIERS=@im=ibus, your application does not connect to IBus and your issue is not IBus.

Comment 5 Jens Petersen 2023-08-21 13:46:07 UTC

(In reply to Steve Barcomb from comment #0)
:
> Setting XMODIFIERS=@im=ibus works around the issue for now.

I think from https://bugzilla.redhat.com/show_bug.cgi?id=2170830#c38 you meant unsetting XMODIFIERS (or to "@im=none").

Comment 6 Jens Petersen 2023-08-21 14:53:36 UTC

Okay I managed to reproduce - one has to repeat maybe times into the widget (no need to press Submit):

Testing in RHEL 8 Gnome Wayland with unfixed mutter:

1) In one terminal start tk:

$ perl test.pl

and click on the tk input box to focus it.

2) In second terminal (https://bugzilla.redhat.com/show_bug.cgi?id=2170830#c51):

$ sudo evemu-play ./log.txt

3) Immediately press Alt-Tab to switch focus to the tk window.

"2lhq-returns" is output immediately in the shell but the rest of the input will get into the app.

Sometimes (maybe 1 in 10 times or less) the input will be jumbled:
keeping entering a key into the shell after seeing "Hit enter to start replaying", repeating this step 3, until seeing misordered text.


example result text in the input box:

@team-rocalklanet#1alklanet#1alklanet#1@team-rocalklanet#1alklanet#1alklanet#1alklanet#1alklanet#1@team-rocalklanet#1alkl1net#aalklanet#1@lhq-returns@team-rocalklanet#1alklanet#1alklanet#1@team-rocalklanet#1alklanet#1alklanet#1@team-rocalkl1net#aalklanet#1alklanet#1

Search this comment for "alklanet#1" to misorderings.

Comment 8 Jens Petersen 2023-08-21 14:57:13 UTC

After unsetting XMODIFIERS and rerunning the tk app, I couldn't reproduce yet

Comment 9 Jens Petersen 2023-08-24 08:00:57 UTC

I also reproduced in current Rawhide (ibus-1.5.9~rc1) and F38 (1.5.28-6).
It seems easier to reproduce in Fedora than RHEL8 for me.

Comment 10 Jens Petersen 2023-08-24 08:30:44 UTC

I opened an upstream issue for this: https://github.com/ibus/ibus/issues/2560

Comment 12 RHEL Program Management 2023-09-05 16:16:02 UTC

Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.

Comment 13 RHEL Program Management 2023-09-05 16:17:30 UTC

This BZ has been automatically migrated to the issues.redhat.com Red Hat Issue Tracker. All future work related to this report will be managed there.

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