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Use null-device where appropriate

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* 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)
This commit is contained in:
Michael Albinus 2020-11-25 22:13:33 +01:00
parent b5e34c34bc
commit 67a8bdb90c
18 changed files with 36 additions and 36 deletions
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2
lisp/shell.el
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@ -605,7 +605,7 @@ buffer."
(t "~/.history")))))
(if (or (equal comint-input-ring-file-name "")
(equal (file-truename comint-input-ring-file-name)
(file-truename "/dev/null")))
(file-truename null-device)))
(setq comint-input-ring-file-name nil))
;; Arrange to write out the input ring on exit, if the shell doesn't
;; do this itself.