Uploaded image with accents in name, image don't show in Safari 6

https://www.soulcie.fr/wp-content/uploads/2012/08/120820_pre?sidence-ump-bousier-scarabe?es.jpg

https://www.soulcie.fr/wp-content/uploads/2012/08/120820_présidence-ump-bousier-scarabées.jpg

I can’t see any differences for the two URL but they are different if you just copy it. The first one is correct while the second is broken. The e? in the two URL are different if you view the two URL in notepad.

It will be good to not use german characters in image name. Further problems will happen if there are special characters in image name(for example, some hosting will encode these characters if you upload via FTP but will not encode it when uploading in wordpress. This will cause different image URL in hosting and wordpress database when you transfer/restore site).

Okay, so your advice is not to use special characters in the file names. Why wouldn’t wordpress media uploader rename the special characters? BTW, they’re french ??
Thanks,

This wp function works for me: remove_accents. Hope it helps ??
Example:
https://www.uv.mx/personal/gvera/wordpress-remove-special-characters-from-uploaded-files/

Thanks for the hint!
It worked for me with the following code in functions.php

function sanitize_filename_on_upload($filename) {
$ext = end(explode('.',$filename));
// Replace all weird characters
$sanitized = preg_replace('/[^a-zA-Z0-9-_.]/','', substr($filename, 0, -(strlen($ext)+1)));
// Replace dots inside filename
$sanitized = str_replace('.','-', $sanitized);
return strtolower($sanitized.'.'.$ext);
}

add_filter('sanitize_file_name', 'sanitize_filename_on_upload', 10);

Cheers!