GNU bug report logs - #31984
26.1; indent-sexp doesn't indent expressions starting with #

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From: Gemini Lasswell <gazally <at> runbox.com>
To: 31984 <at> debbugs.gnu.org
Subject: bug#31984: 26.1.50; IELM doesn't indent results printed with #
Date: Tue, 26 Jun 2018 12:42:36 -0700

When the result of evaluation in IELM is something with a printed
representation beginning with #, such as a record or char-table,
it is pretty-printed without indentation.

To reproduce, M-x ielm RET and then evaluate this:

(require 'cl-lib)
(cl-defstruct (foo) a)
(make-foo :a (lambda (x) (- 1 x)))

Result:

#s(foo :a
(lambda
(x)
(- 1 x)))

If you do the same thing in Emacs 25, this is the result:

[cl-struct-foo
 (lambda
   (x)
   (- 1 x))]

Here are two other examples which when evaluated in IELM print
results without indentation in Emacs 26 and with indentation in Emacs 25:

char-acronym-table

(let ((ht (make-hash-table)))
  (puthash 1 '(a b c) ht)
  ht)

Oddly, Emacs 26's IELM does indent the result of this one:

(symbol-function 'ielm-process)

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