https://bugs.kde.org/show_bug.cgi?id=399019

            Bug ID: 399019
           Summary: FolderView : instant crash when filename contains rare
                    UTF-8 symbols
           Product: plasmashell
           Version: 5.13.5
          Platform: Manjaro
                OS: Linux
            Status: REPORTED
          Severity: crash
          Priority: NOR
         Component: Folder
          Assignee: h...@kde.org
          Reporter: ma...@free.fr
                CC: plasma-b...@kde.org
  Target Milestone: 1.0

Created attachment 115203
  --> https://bugs.kde.org/attachment.cgi?id=115203&action=edit
How the filename is (properly) displayed under Manjaro (this triggering the
plasma crash)

SUMMARY

Some specific files containing some rare UTF-8 characters (i.e. : coloured
dots) trigger an instant crash of the FolderView plasmoid containing them. (if
not visible: crash occurs when scrolling)

STEPS TO REPRODUCE

I couldn't reproduce it under KDE Neon as, for some reason, the system doesn't
seem to handle those characters. They are replaced by empty squares.

The Plasma crash does occur all the time under Arch based Manjaro.

1. Download this video with youtube-dl
https://www.youtube.com/watch?v=oUezQDPq44A
2. You'll notice the filename contains rare red and yellow dots (as seen in the
youtube page)
3. Copy them to a folder watched by a folder view plasmoid

EXPECTED RESULT

Filename is displayed, you can scroll the folder view...

ACTUAL RESULT

You either get an instant Plasma Shell crash (leading to an infinite restating
loop if the file is visible from the start and needs no scrolling down)

Or you have to scroll you folder view to get the crash. 

Here it happens ALL the time when scrollings and most of the time when not
scrolling. It stops when removing the aforementioned file.


NOTE :

- The Folder View plasmoid is capable of displaying the file / title but
crashes nonetheless
- Dolphin handles the filename properly
- Title is displayed properly (and trigger the bug) under Arch / Manjaro but
not under Neon (thus not triggered the bug)

The provided attachment shows how the filename is displayed under Manjaro KDE.

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