Removing extra whitespace?

[danielcompton]

Removing extra whitespace?

[PEZ]

Two of those cases should be easy to solve without controversy. Just remove all trailing whitespace on non-empty lines and decide on wether to have zero or one trailing empty line at the end of the files.

As for the empty lines within a form, I personally think they can always be removed.

Of course, an editor might, and probably will, relax these rules while code is being entered and enforce them more strictly on save and on command.

Let me add what I think might be a trickier one to agree on:

Between top level forms
Some people suggest to use two lines. Having tried that, I have kind of started to like it. But I am not using it for all forms.

(def foo :foo)
(def bar :bar)


(defn re-pos-first
  "Find position of first match of `re` in `s`"
  [re s]
  (if-let [m (.match s re)]
    (.-index m)
    -1))


(defn split-into-lines
  [s]
  (clojure.string/split s #"\r?\n" -1))


(defn enclosing? [text]
  (let [ast (cljify (paredit/parse text))
        children (:children ast)]
    (and (= 1 (count children))
         (= "list" (:type (first children))))))

I think the pattern I follow might be that forms that are often one-liners get zero lines between them and otherwise I opt for two. Maybe the formatter could use these rules:

• No empty lines between one-liner forms
• X (whatever we agree on) empty newlines between multi-line forms, as well as between one-liner forms and multi-line forms.