Please clarify: /img/flags/flagnames.php contains several flags with duplicated entries. With and without underscores or spaces.
American Samoa, several British territories, Bosnia and Herzegovina, practically all country names that contain spaces have double listings. One with spaces and one with underscores.
The remark in the source code says
// Here come the dynamically generated strings for img/flags/*.gif
// This file ensures that the following strings will be included in the language translation files.
There I do not see any flags with filenames containing spaces (although on today's operating systems they wouldn't pose any problem.
So is this some historical relic? Then please clear this up, it unnecessarily inflates ALL (!) languages' translations.
Thanks.
P.S: Fun fact, there is even a flag "low germany" which does not exist. It was composed from the existing flags of Germany and the Netherlands.
P.P.S: Two flags are missing, since 2019 North Macedonia:
https://en.wikipedia.org/wiki/North_Macedonia
In 2018 Sudan split up in North (Republic of Sudan) and South:
https://en.wikipedia.org/wiki/South_Sudan