remote URL with UTF8 characters can't be uploaded

Here is patch but it is for 7.x version.
Module uses basename() function
Should use drupal_basename()

I have applied the patch (7.x-1.11), but it still doesn't work.

Did anyone manage to make it work?

I've worked on this today and these are my findings:

filefield_sources uses pathinfo to get the name of the file, the problem with this is that pathinfo rely in the locale to get the correct name of the file.

So, in theory setting the locale (using setlocale) somewhere in the code (a custom module or maybe in the settings.php) will fix this, I tried and it worked for me, there are even a few patches in other modules with a similar problem and the workaround is actually set a temporary locale to allow the code to get the data correctly.

Not sure how good is to rely in a generic locale it might break in specific enviroments, maybe the best thing if we want to preserve the filename is document how to set a locale and allow the user to set the correct locale depending their server.

Another idea is to take advantage of the transliteration class that is now part of core.

So, I decided to use transliteration approach.

Patch attached.