[konsole] [Bug 508523] New: Konsole seems unable to correctly handle Vim's line numbers when Vim is in Arabic or Hebrew modes.

[bug-control at kde.org]

https://bugs.kde.org/show_bug.cgi?id=508523

            Bug ID: 508523
           Summary: Konsole seems unable to correctly handle Vim's line
                    numbers when Vim is in Arabic or Hebrew modes.
    Classification: Applications
           Product: konsole
      Version First 25.08.0
       Reported In:
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: emulation
          Assignee: konsole-devel at kde.org
          Reporter: lij1478 at 163.com
  Target Milestone: ---

Created attachment 184288
  --> https://bugs.kde.org/attachment.cgi?id=184288&action=edit
This is a screenshot comparing VSCode and Konsole.

(Translated into English by AI, with the original Chinese text appended at the
end.)

SUMMARY
Konsole cannot correctly handle Vim's line numbers (in Arabic or Hebrew modes)
like TTY or xterm does.

STEPS TO REPRODUCE
1. Execute "vim -A" or "vim -H" in the shell started by konsole.
2. :set number
3. Type something

OBSERVED RESULT
The line numbers in Vim do not appear on the left or right side of the screen;
instead, they are positioned at the end of the line, shifting along with the
movement of the last character within the line until they reach the left edge
of the screen.

When the line ends with left-to-right (e.g., numeric) characters, these
characters will appear to the left of the line numbers.

EXPECTED RESULT
In "vim -A" or "vim -H", the line numbers appear on the right side.

SOFTWARE/OS VERSIONS
(kinfo)
```
Operating System: Arch Linux 
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
Kernel Version: 6.16.1-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 18 × Intel® Core™ Ultra 5 125H
Memory: 32 GiB of RAM (30.8 GiB usable)
Graphics Processor: Intel® Arc
```

ADDITIONAL INFORMATION

After testing multiple terminal emulators on my device, I found that the
terminal emulators of GNOME, MATE, and Xfce all exhibit the same issue.

GVim, VSCode, XTerm, Kitty, and Linux TTY do not exhibit such issues.

============================

【摘要】
终端界面不能像 TTY 或 xterm 那样正确处理 Vim（在阿拉伯模式或希伯来模式中的）行号

【复现过程】
1. 在 konsole 启动的 shell 中执行“vim -A”或“vim -H”
2. :set number
3. 在窗口中随意输入内容

【异常现象】
vim 的行号不在屏幕左侧或右侧，而是出现在行末的位置，随行内最后一个字符移动而移动，直到触及屏幕左侧边缘
当该行以左到右（譬如数字）字符结尾时，这部分的字符会跑到行号右侧

【补充信息】
我在我的设备上测试过多个终端模拟器发现，gnome、MATE 和 Xfce 的终端模拟器，均存在这个问题。
GVim、VSCode、XTerm、Kitty 和 Linux TTY 中则没有这样的现象。

【预期现象】
在 vim -A 或 vim -H 中，行号出现在右侧

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