let fullpath = expand("%:p")
if fullpath[:len(g:mein_pwdP)-1] ==# g:mein_pwdP
let fullpath = g:mein_pwdL . fullpath[len(g:mein_pwdP):]
let fullpath = expand("%:p")
if fullpath[:len(g:mein_pwdP)-1] ==# g:mein_pwdP
let fullpath = g:mein_pwdL . fullpath[len(g:mein_pwdP):]