Severity: minor
Tags: patch

Given the following two files under /tmp:

  ;;; foo.el -*- lexical-binding: t -*-
  (defvar foo-x)
  (defvar foo-y)
  ;;; foo.el ends here

  ;;; bar.el -*- lexical-binding: t -*-
  (defun bar-x (foo-x) (ignore foo-x))
  (let ((foo-y 1))
    (ignore foo-y)
    (setq foo-y 2))
  ;;; bar.el ends here

  $ EMACS_GENERATE_DYNVARS=1 emacs -Q -batch -f batch-byte-compile foo.el
  Generating /tmp/foo.elc.dynvars

  $ cat foo.elc.dynvars
  (#<symbol foo-y at 62> . "/tmp/foo.el")
  (#<symbol foo-x at 47> . "/tmp/foo.el")

  $ EMACS_DYNVARS_FILE=foo.elc.dynvars emacs -Q -batch -f batch-byte-compile bar.el

Since the .dynvars file makes for some bad reading, the last step gives
no diagnostic, though I would expect it to.

Here's a patch that binds print-symbols-bare appropriately: