Using a shell script run under Cygwin, I want to create a file name which contains Danish characters (Ø, Æ, and Å). I have a bash script which basically does this: echo "some data" > "file name with Danish letters.txt". After running such script, all Danish letters look like a dot in the file name. I have tested this using Cygwin 32 under Windows 7 and Cygwin 64 under Windows 10. The locale command produces the following:
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_ALL=
Running:
echo "rødgrød" | od -ctx1
produces this:
0000000 r 303 270 d g r 303 270 d \n
72 c3 b8 64 67 72 c3 b8 64 0a
0000012
Here is an example of how the bash script looks like:
echo "some data" > "Peter Sørensen.txt"
The letter ø looks like a dot when I look at the created file name in Windows. Here is a screenshot of the file name:
In cygwin, running the ls command results in this message:
ls: cannot compare file names ‘Peter S\370rensen.txt’ and ‘test.sh’: Invalid or incomplete multibyte or wide character
And here is a screenshot of how this file name looks like in cygwin terminal after running the ls command:

