Added variables support to server_tokens. It can now be set to "off" conditionally, e.g. using the map directive. An empty value will disable the emission of the Server: header and the signature in error messages generated by nginx. Any other value is treated as "on", meaning that full nginx version is emitted in the Server: header and error messages generated by nginx.

if exists("b:did_indent")
    finish
endif
let b:did_indent = 1

setlocal indentexpr=

" cindent actually works for nginx' simple file structure
setlocal cindent
" Just make sure that the comments are not reset as defs would be.
setlocal cinkeys-=0#