When I browse to open a file, I’m always frustrated about the order in which things appear. I don’t like the whole lowercase before uppercase, and having the scroll right down to ‘D’ because it’s not ‘d’ seems pointless.
Today I poked at solving this and it’s a simple fix.
Edit /etc/locale.conf and change LC_COLLATE=C to match your language, eg.
LANG=en_GB.UTF-8
LC_COLLATE=en_GB.UTF-8
Reboot and the job is done. Now I see things sorted regardless of case.