Are mixed-case filenames possible with Cygwin?
Several Unix programs expect to be able to use to filenames spelled the same way, but with different case. A prime example of this is perls configuration script, which wants Makefile and makefile. WIN32 can tell the difference between files with just different case, so the configuration fails.
In releases prior to beta 16, mount had a special mixed case option which renamed files in such a way as to allow mixed case filenames. We chose to remove the support when we rewrote the path handling code for beta 16. The standard Windows apps -- explorer.exe, cmd.exe/command.com, etc. -- do not distinguish filenames that differed only in case, resulting in some (very) undesirable behavior.
Sergey Okhapkin had maintained a mixed-case patch (coolview) until about B20.1, but this has not been updated to recent versions of Cygwin