the sanitize_file_name_chars filter and ch(0)
|Reported by:||olivM||Owned by:|
the sanitize_file_name_chars filter is tricky to use due to the chr(0) ending the array :
special_chars = $my_char;
have no effect.
so the only way to add some char to the array is to use array_unshift :
this is mostly a php issue, but it could be useful to add some notice to the WordPress documentation.