Thank you very much for your answer. I have these lines in my .vimrc:
if has("autocmd")
au BufRead,BufNewFile *.cls set filetype=tex
au BufRead,BufNewFile sconstruct set filetype=python
" Nes C syntax (used by TinyOS)
au BufRead,BufNewFile *.nc set filetype=nesc
au! Syntax nesc source ~/.vim/nesc.vim
endif
I use them to force a filetype for some files. Shouldn't I do that?
I added your line among mine:
au BufRead * set autoindent cindent smartindent
And now it's working correctly. As I understand it, these options are
disabled because I didn't add them to my other lines? But in this
case, why other options aren't also disabled?