XnViewMP fails to load or save QOI images with unicode filenames

[f2d]

Using both Save As and Batch Convert, no file is saved.
Batch convert log:

E:\第01話.bmp : loading
E:\第01話.bmp 1920x1080x24 : loaded
E:\第01話.qoi : not a picture

Input files: 1
Extracted pages: 1
New files: 1

Total Duration: 0 second(s)

No problem converting same files to JPG in XnViewMP.
No problem with Save As in XnViewMP if target filename is changed to non-unicode (e.g. latin alphanumeric only) in save dialog.
No problem with Paint.net, but saved file with unicode filename cannot be loaded in XnViewMP, showing this message box:

---------------------------
Error
---------------------------
File can't be loaded!
---------------------------
OK   
---------------------------

[pfusik]

That's a limitation of XnViewMP on Windows. The Unicode characters are lost in XnViewMP. They are passed to the plugin as question marks. The built-in formats work because they don't go through the plugin interface.
Paint.NET opens the files itself, so its plugin doesn't deal with filenames at all.

Best I can do for XnViewMP is to ask its author to provide a new plugin interface that supports Unicode filenames. Let us know how important it is for you and whether you know other users needing that.

[f2d]

I personally can deal with it, using batch renaming and back, or keep encoding-neutral filename forms.
I don't know anyone else running into this issue.

On the other hand, unlike old XnView Classic, XnViewMP claims unicode filename support, so users probably expect that.
If its author thinks unicode support is important, your proposal should be good.

Also there are old 8.3 filenames that are used when I drag and drop such files into old XnView Classic and some other fallback cases.
But automatic creation and storing of such names may be disabled in some systems.
And they are probably not a good solution for creating new files when full original name may be lost.