Drupal Association members fund grants that make connections all over the world.
I don't know if this something Transliteration should handle, but I recently ran into a problem with a FTP server that did not list or transfer any files that had 2 consecutive periods in the filename.
Since was marked as duplicate of this issue here, I'm copy-pasting its summary here as well...
When using the transliteration function for renaming files in the upload process, at most one consecutive separator character shall appear in filename after the manipulations such as omitting punctation or stopwords.
Original: Aaa + bb & cc @ dd • ee.txt Result: aaa__bb__cc__dd__ee.txt Expected: aaa_bb_cc_dd_ee.txt