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  36         id 1Qbb3x-0002eQ-B6; Tue, 28 Jun 2011 12:22:57 -0400\r
  37 Date: Tue, 28 Jun 2011 12:22:57 -0400\r
  38 From: Austin Clements <amdragon@MIT.EDU>\r
  39 To: Dmitry Kurochkin <dmitry.kurochkin@gmail.com>\r
  40 Subject: Re: [PATCH 2/2] test: use emacsclient(1) for Emacs tests\r
  41 Message-ID: <20110628162257.GD4120@mit.edu>\r
  42 References: <1309132379-24089-1-git-send-email-dmitry.kurochkin@gmail.com>\r
  43         <1309146846-30991-1-git-send-email-dmitry.kurochkin@gmail.com>\r
  44         <1309146846-30991-2-git-send-email-dmitry.kurochkin@gmail.com>\r
  45         <BANLkTi=nwHRndz367K5oh4=tPaU-KNeZ8Q@mail.gmail.com>\r
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  81 \r
  82 Quoth myself on Jun 27 at 11:49 pm:\r
  83 > Quoth Dmitry Kurochkin on Jun 28 at  5:03 am:\r
  84 > EMACSDONE=$TEST_DIRECTORY/emacsdone\r
  85 > mkfifo $EMACSDONE\r
  86 > coproc emacs --batch --eval '(while t (eval (read)) (write-region "\n" nil "'$EMACSDONE'" t 0))'\r
  87 > EMACSFD=${COPROC[1]}\r
  88 > \r
  89 > test_emacs() {\r
  90 >     echo "$1" >&$EMACSFD\r
  91 >     read <$EMACSDONE\r
  92 > }\r
  93 > \r
  94 > test_emacs '(sleep-for 2)'\r
  95 > test_emacs '(message "Hi")'\r
  96 > \r
  97 > echo '(kill-emacs)' >&$EMACSFD\r
  98 \r
  99 Oops, got a little overzealous with TEST_DIRECTORY.  For reference,\r
 100 the pipe should, of course, have gone in the current directory (or\r
 101 TMP_DIRECTORY).\r
 102 \r
 103 mkfifo emacsdone\r
 104 coproc emacs --batch --eval '(while t (eval (read)) (write-region "\n" nil "emacsdone" t 0))'\r
 105 EMACSFD=${COPROC[1]}\r
 106 \r
 107 test_emacs() {\r
 108     echo "$1" >&$EMACSFD\r
 109     read < emacsdone\r
 110 }\r
 111 \r
 112 \r
 113 (I don't really see how that could be either more shell code or more\r
 114 elisp code than using emacsclient plus cleanup code [nor why it\r
 115 matters for five lines of code], but I'm probably missing something.)\r