equalprg with lisp (clojure) and custom indent settings

Question

How do I make equalprg match my custom indent settings? They are like:

let b:did_indent = 1
set expandtab       
set shiftwidth=2
set softtabstop=2

set autoindent

And they format the code to this (actually I have to add the 2 extra spaces myself):

(. fs (writeFile "test.txt" "some text" (fn [err]
  (. res(send (if err "error" "done")))

And when I use =, this is what I got:

(. fs (writeFile "test.txt" "some text" (fn [err]
                                         (. res(send (if err "error" "done")))

How do I keep the first form?

Also, would it be possible to add the leading spaces automatically then, because I suppose they would be scrapped?

Answer 1

equalprg specifies an external program, there is no way for the external program to know your specific indenting settings, except for parsing your various configuration files.

In general it is better to go with the indentexpr setting, which can use various VimScript to perform your indentation (as well as call an external program).