* lisp/cedet/semantic/senator.el (senator-lazy-highlight-update):
* lisp/emulation/edt.el (edt-find, edt-restore-key)
(edt-remember):
* lisp/eshell/em-ls.el (eshell-ls--insert-directory):
* lisp/net/tramp-sh.el (tramp-sh-handle-write-region):
* lisp/progmodes/hideif.el (hide-ifdef-mode):
* test/lisp/url/url-future-tests.el (url-future-tests): Prefer setq to
set+quote.

* lisp/eshell/em-cmpl.el (eshell-cmpl-initialize):
* lisp/eshell/em-dirs.el (eshell-dirs-initialize):
* lisp/eshell/em-glob.el (eshell-glob-initialize, eshell-glob-regexp):
* lisp/eshell/em-hist.el (eshell-hist-initialize):
* lisp/eshell/em-prompt.el (eshell-prompt-initialize):
* lisp/eshell/em-rebind.el (eshell-rebind-initialize)
(eshell-setup-input-keymap):
* lisp/eshell/em-script.el (eshell-script-initialize):
* lisp/eshell/em-smart.el (eshell-smart-initialize):
* lisp/eshell/em-term.el (eshell-term-initialize, eshell-exec-visual):
* lisp/eshell/em-tramp.el (eshell-tramp-initialize):
* lisp/eshell/em-unix.el (eshell-unix-initialize, eshell/diff):
* lisp/eshell/esh-arg.el (eshell-arg-initialize):
* lisp/eshell/esh-cmd.el (eshell-cmd-initialize):
* lisp/eshell/esh-io.el (eshell-get-target):
* lisp/eshell/esh-mode.el (eshell-mode):
* lisp/eshell/esh-var.el (eshell-var-initialize): Prefer setq-local.

* lisp/eshell/em-unix.el (eshell-grep): Use the -H switch so that
we always get the file name, so that `M-x next-error' and friends
work (bug#22330).

* lisp/eshell/em-unix.el (eshell-grep): There doesn't seem to be
any reason why parts of the command should be invisible, so don't
do that.

* lisp/eshell/esh-var.el:
* lisp/man.el: Don't require 'env'; it is preloaded since version
20.1.

* lisp/filesets.el (filesets-select-command):
* lisp/shell.el (shell-mode):
* lisp/term.el (term-exec-1):
* lisp/wdired.el (wdired-do-symlink-changes):
* lisp/cedet/ede/pmake.el (ede-proj-makefile-create):
* lisp/eshell/esh-io.el (eshell-set-output-handle):
* lisp/gnus/gnus-fun.el (gnus-grab-cam-x-face):
* lisp/gnus/mml2015.el (mml2015-epg-key-image):
* lisp/gnus/smime.el (smime-noverify-region):
* lisp/org/ob-picolisp.el (org-babel-execute:picolisp):
* lisp/org/ob-screen.el (org-babel-prep-session:screen)
(org-babel-prep-session:screen):
* lisp/play/fortune.el (fortune-quiet-strfile-options):
* lisp/progmodes/cperl-mode.el (cperl-pod2man-build-command):
* lisp/progmodes/sh-script.el (sh-tmp-file):
* lisp/vc/diff-mode.el (diff-add-log-current-defuns)
(diff--font-lock-prettify):
* lisp/vc/ediff-mult.el (ediff-patch-file-form-meta):
* lisp/vc/ediff-ptch.el (ediff-map-patch-buffer)
(ediff-fixup-patch-map, ediff-dispatch-file-patching-job):
* lisp/vc/vc.el (vc-diff-internal): Use null-device or 	(null-device),
respectively.  (Bug#3736)

* lisp/cedet/semantic/format.el (semantic--format-colorize-text):
* lisp/eshell/em-ls.el (eshell-ls--insert-directory):
* lisp/net/dig.el (dig-mode):
* lisp/progmodes/cperl-mode.el (cperl-pod-here-fontify):
* lisp/progmodes/idlw-help.el (idlwave-help-fontify):
* lisp/progmodes/idlwave.el (idlwave-completion-fontify-classes):
Don't check for feature 'font-lock; it has been preloaded since 22.1.
* lisp/cedet/semantic/format.el (font-lock):
* lisp/epa.el (font-lock):
* lisp/erc/erc.el (font-lock):
* lisp/generic-x.el (font-lock):
* lisp/net/sieve-mode.el (font-lock):
* lisp/progmodes/prolog.el (font-lock):
* lisp/textmodes/rst.el (font-lock): Remove unnecessary require.

* lisp/eshell/esh-cmd.el (eshell-invoke-directly): Fix problem
with (require 'em-tramp) making password prompting from "sudo
bash" no longer work (bug#43772).

* lisp/eshell/em-basic.el (eshell-echo):
* lisp/eshell/em-cmpl.el (eshell-command-completion-function)
(eshell-default-completion-function, eshell-cmpl-initialize)
(eshell-complete-parse-arguments, eshell-complete-commands-list):
* lisp/eshell/em-dirs.el (eshell-complete-user-reference):
* lisp/eshell/em-hist.el (eshell-hist-unload-hook)
(eshell-hist-initialize):
* lisp/eshell/em-ls.el (eshell-ls-sort-entries):
* lisp/eshell/em-pred.el (eshell-modifier-alist)
(eshell-display-predicate-help, eshell-display-modifier-help)
(eshell-pred-substitute, eshell-split-members):
* lisp/eshell/em-prompt.el (eshell-prompt-function):
* lisp/eshell/em-smart.el (eshell-smart-unload-hook)
(eshell-smart-initialize, eshell-refresh-windows):
* lisp/eshell/em-unix.el (eshell-shuffle-files):
* lisp/eshell/esh-arg.el (eshell-parse-argument-hook):
* lisp/eshell/esh-cmd.el (eshell-cmd-initialize)
(eshell-parse-command):
* lisp/eshell/esh-mode.el (eshell-preinput-scroll-to-bottom)
(eshell-postoutput-scroll-to-bottom):
* lisp/eshell/esh-module.el (eshell-modules-list):
* lisp/eshell/esh-proc.el (eshell-read-process-name)
(eshell-round-robin-kill):
* lisp/eshell/esh-var.el (eshell-envvar-names)
(eshell-variables-list): Don't quote lambdas.