When I write .f90 or .f file I have the problem that vim always highlight the first number of empty columns with red See figure. I have tried to use :noh but did not work. If I use "set list" they disappear but then a lots of symbols appear. My vimrc file can be see here
Tab isn't part of the Fortran character set, so a properly formatted Fortran source file shouldn't contain tabs. You might want to configure vim to replace tabs with spaces.
