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bug#18569: 24.3; Eshell: piping 'find' through 'xargs' reports random nu

From: Vlad Kozin
Subject: bug#18569: 24.3; Eshell: piping 'find' through 'xargs' reports random number of files
Date: Fri, 26 Sep 2014 13:41:32 +0400

Sample eshell session:
~/Documents/battle-field [ ] # find -L islands-page/ -name '*.bemhtml' | xa=
rgs -n1 -t | wc -l
~/Documents/battle-field [ ] # find -L islands-page/ -name '*.bemhtml' | xa=
rgs -n1 -t | wc -l
~/Documents/battle-field [ ] # find -L islands-page/ -name '*.bemhtml' | wc=
~/Documents/battle-field [ ] # find -L islands-page/ -name '*.bemhtml' | wc=

No other process is writing to the root folder or its
subdirectiories. Correct number of lines is 54. Works fine in *shell*,
*ansi-term*, spawned as async command or in any externall shell.

Unrelated to this issue, there's another potential bug. Adding NUL as
separator throws Emacs into infinite 'visual bell' - totally
unresponsive - can only be nuked:
find -L islands-page/ -name '*.bemhtml' -print0 | xargs  -0 -n1 echo

In GNU Emacs 24.3.1 (x86_64-apple-darwin13.2.0, NS apple-appkit-1265.20)
of 2014-06-08 on
Windowing system distributor `Apple', version 10.3.1265
Configured using:
`configure '--prefix=3D/usr/local/Cellar/emacs/24.3' '--without-dbus'
'--without-gnutls' '--with-ns' '--disable-ns-self-contained'

Important settings:
  value of $LC_CTYPE: UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: EShell

Minor modes in effect:
  magit-auto-revert-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  global-flycheck-mode: t
  which-function-mode: t
  global-company-mode: t
  company-mode: t
  helm-mode: t
  helm-descbinds-mode: t
  helm-match-plugin-mode: t
  helm-occur-match-plugin-mode: t
  erc-truncate-mode: t
  erc-track-mode: t
  erc-spelling-mode: t
  global-diff-hl-mode: t
  diff-auto-refine-mode: t
  winner-mode: t
  global-undo-tree-mode: t
  undo-tree-mode: t
  global-anzu-mode: t
  anzu-mode: t
  projectile-global-mode: t
  projectile-mode: t
  shell-dirtrack-mode: t
  volatile-highlights-mode: t
  global-hl-line-mode: t
  recentf-mode: t
  savehist-mode: t
  show-smartparens-global-mode: t
  global-auto-revert-mode: t
  delete-selection-mode: t
  prelude-global-mode: t
  prelude-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  size-indication-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-n C-p C-n w w C-p C-n w w C-t <return> r e a d <return>
C-n C-n C-p w w M-h M-` C-g M-; C-t C-s w w C-- C--
w w C-- C-- C-- C-p C-n w w w w =D0=B1 =D0=B1 C-=D1=85 w w w w <C-S-backspa=
C-/ <backspace> <backspace> C-t C-s w w C-p C-n w w
C-p C-n C-t C-s C-p C-p C-p C-p C-p C-p C-n C-n C-n
C-n C-n C-n C-n C-d C-d C-d C-t C-s C-c C-b b b <return>
C-n C-n C-n C-n C-n C-n C-p C-n w w C-n C-d C-d C-t
C-s C-d C-t C-s C-c C-b b b <return> C-n C-n C-n C-n
C-n C-n C-n C-n C-p C-n w w C-n C-d C-d C-t C-s C-c
C-b w w b b <return> C-c s w w b b <return> C-d M-h
M-` C-g M-; C-t C-s w w b b b j s <return> M-< C-v
C-v C-v C-v C-v C-v M-< b b <return> C-n C-n C-p C-n
C-p C-n C-p C-n C-n C-n C-p C-n C-n C-t m p w d <return>
c d SPC o d <backspace> <backspace> b a <tab> <backspace>
<backspace> d o c <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> C-c C-l C-g C-t
C-f <tab> d o c u <tab> b a t <tab> C-z p a t h <backspace>
<backspace> <backspace> <backspace> e s h e l M-e C-c
C-l f i n d C-n C-p C-n C-n C-n <return> <return> C-p
C-n M-p <return> M-p C-b C-b C-b C-b C-b C-b C-b <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> C-e
<return> M-p <return> <help-echo> C-t <return> r e
p a r <backspace> <backspace> o r t SPC e m a <ret

Recent messages:
Mark set
Saving file /Users/kozin/Documents/Speak/pYatnitsa/Expr.js...
Wrote /Users/kozin/Documents/Speak/pYatnitsa/Expr.js
Mark set
Making completion list...
Saving file /Users/kozin/Documents/Speak/pYatnitsa/Expr.js...
Wrote /Users/kozin/Documents/Speak/pYatnitsa/Expr.js
Mark set [2 times]
History item: 128 [3 times]

Load-path shadows:
/Users/kozin/.emacs.d/personal/custom hides /usr/local/Cellar/emacs/24.3/sh=

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log-edit pcvs-util tmm misearch multi-isearch vc-bzr vc-sccs vc-svn
vc-cvs vc-rcs diff-hl-dired tramp-cache image-file helm-command
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password-cache tramp-loaddefs shell pcomplete comint ansi-color
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helm-descbinds-autoloads helm-projectile-autoloads helm-autoloads
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logito-autoloads magit-autoloads info easymenu git-rebase-mode-autoloads
git-commit-mode-autoloads makey-autoloads markdown-mode+-autoloads
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pcache-autoloads pcomplete-extension-autoloads popup-autoloads
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ediff-hook vc-hooks lisp-float-type mwheel ns-win tool-bar dnd fontset
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greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process ns multi-tty emacs)

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