Indent even [ and cond subexpressions?

[vspinu]

Hi,

With the parentheseslessness of clojure comes the burden that the indentation of the multi-line code becomes awkward.

Would it be posible to shift even clauses of cond by 2 spaces? An example from clojure.core:

(let [ev (eval v)]
    (cond 
     (instance? java.lang.Enum ev)
     (.visitEnum av name (descriptor (class ev)) (str ev))
     (class? ev)
     (.visit av name (clojure.asm.Type/getType ev))
     :else (throw (IllegalArgumentException. 
                    (str "Unsupported annotation value: " v " of class " (class ev))))))

Could it be:

(let [ev (eval v)]
    (cond 
     (instance? java.lang.Enum ev)
       (.visitEnum av name (descriptor (class ev)) (str ev))
     (class? ev)
       (.visit av name (clojure.asm.Type/getType ev))
     :else (throw (IllegalArgumentException. 
                    (str "Unsupported annotation value: " v " of class " (class ev))))))

[bbatsov]

Never seen such style in practice, so I'm very wary about supporting it. I feel your pain, though. The effort to drop some parentheses in Clojure was a big misguided IMO.

[vspinu]

I have developed a habit of leaving one line between the conditionals. The proposed indentation has an unpleasant drawback. Long conditions look like function calls; especially problematic with multiline statements:

(let [ev (eval v)]
  (cond 
   (instance? java.lang.Enum ev)
     (.visitEnum
       av name (descriptor (class ev)) (str ev))
   (class? ev)
     (.visit
       av name (clojure.asm.Type/getType ev))
   :else (throw (IllegalArgumentException. 
                 (str "Unsupported annotation value: " v " of class " (class ev)))))