Expected behavior

When editing an EDN buffer (file ending .edn), clojure mode should treat all paren forms as lists rather than functions, since EDN is a data format.

Thus if you choose to format a list with, say, key-value style pairs, default indentation should Just Work, like for vectors:

(:key1 :value1 :key2 :value2 :key3 :value3) 

Actual behavior

EDN buffers are treated like Clojure code. Though this is mostly correct, it indents list contents like function calls rather than lists when each line contains more than 1 item:

(:key1 :value1 :key2 :value2 :key3 :value3) 

I don't see any configuration vars to change this behavior. There are options for functional indent style, but no buffer-local way to redefine what is classified as a function (that I can see). All the function indent styles will keep the keys from lining up as they would in a vector, map, etc.

Steps to reproduce the problem

Find new file, /tmp/foo.edn. Type one of the above forms.

Workaround

I work around this by redefining a function in my init.el. Only the string-match clause in the or is new:

(require 'clojure-mode) (defun clojure--not-function-form-p () "Non-nil if form at point doesn't represent a function call." (or (string-match "\\.edn$" (or (buffer-file-name) (buffer-name))) (member (char-after) '(?\[ ?\{)) (save-excursion ;; Catch #?@ (:cljs ...) (skip-chars-backward "\r\n[:blank:]") (when (eq (char-before) ?@) (forward-char -1)) (and (eq (char-before) ?\?) (eq (char-before (1- (point))) ?\#))) ;; Car of form is not a symbol. (not (looking-at ".\\(?:\\sw\\|\\s_\\)")))) 

Environment & Version information

clojure-mode version

clojure-mode (version 5.13.0) 

Emacs version

GNU Emacs 27.2 (build 1, x86_64-redhat-linux-gnu, GTK+ Version 3.24.30, cairo version 1.17.4)
of 2021-08-07