I use LLVM's vimrc and found that this setting below is useful when
editing of reStructuredText file.
" Enable syntax highlighting for reStructuredText files. To use, copy
" rest.vim (http://www.vim.org/scripts/script.php?script_id=973)
" to ~/.vim/syntax .
au! BufRead,BufNewFile *.rst set filetype=rest
Now LLVM and Clang use Sphinx so I believe this setting would be helpful.
More info about the rest.vim can be found the url above.
Do I need to file some kind of pull request? I haven't provided any
patches so far...