$ emacs --version
GNU Emacs 27.1
Copyright (C) 2020 Free Software Foundation, Inc.
GNU Emacs comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of GNU Emacs
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.
Warning (bytecomp): the following functions are not known to be defined: rotatef,
iedit-lib-start, iedit-lib-cleanup
Warning (bytecomp): reference to free variable ‘iedit-hiding’
Warning (bytecomp): the following functions are not known to be defined: iedit-lib-cleanup,
iedit-lib-start, iedit-hide-context-lines
Warning (bytecomp): looking-back called with 1 argument, but requires 2-3
Warning (bytecomp): defcustom for ‘emr-el-definition-macro-names’ fails to specify type [2 times]
Warning (bytecomp): the function ‘js2r--name-node-at-point’ is not known to be defined.
Warning (bytecomp): ‘beginning-of-sexp’ is an obsolete function (as of 25.1); use ‘thing-at-point--beginning-of-sexp’ instead.