Vimdiff multiple windows different read/write permission

Question

I am opening 3 windows using vimdiff with file1, file2 and file3..

I would like to have file3 be in edit mode, and file1 and file2 to be in read only mode.

Is this possible?

This is my command...

vimdiff -R file1 file2 -c :topleft sp file3

Thanks,

Tom

Answer 1

This worked for me:

vimdiff -R file1 file2 -c ':se noreadonly' file3