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bug#20202: 24.3; Comint mode sets a bad $EMACS

From: Stefan Monnier
Subject: bug#20202: 24.3; Comint mode sets a bad $EMACS
Date: Thu, 09 Apr 2015 11:02:29 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)

> Yeah, that's what I thought.  FWIW, to avoid it for now, I've made my
> Emacs set it to "emacs" and it looks like that works fine for builds.

I've just installed the patch below into master, which should fix this


diff --git a/lisp/comint.el b/lisp/comint.el
index 31649ff..2769c87 100644
--- a/lisp/comint.el
+++ b/lisp/comint.el
@@ -816,8 +816,6 @@ series of processes in the same Comint buffer.  The hook
                    (format "COLUMNS=%d" (window-width)))
            (list "TERM=emacs"
                  (format "TERMCAP=emacs:co#%d:tc=unknown:" (window-width))))
-         (unless (getenv "EMACS")
-           (list "EMACS=t"))
          (list (format "INSIDE_EMACS=%s,comint" emacs-version))
diff --git a/lisp/net/tramp-sh.el b/lisp/net/tramp-sh.el
index f59c5fb..3f006e8 100644
--- a/lisp/net/tramp-sh.el
+++ b/lisp/net/tramp-sh.el
@@ -496,7 +496,6 @@ as given in your `~/.profile'."
 (defcustom tramp-remote-process-environment
   `("TMOUT=0" "LC_CTYPE=''"
     ,(format "TERM=%s" tramp-terminal-type)
-    "EMACS=t" ;; Deprecated.
     ,(format "INSIDE_EMACS='%s,tramp:%s'" emacs-version tramp-version)
     "autocorrect=" "correct=")
diff --git a/lisp/progmodes/compile.el b/lisp/progmodes/compile.el
index 362bbf5..9d36e91 100644
--- a/lisp/progmodes/compile.el
+++ b/lisp/progmodes/compile.el
@@ -1666,11 +1666,7 @@ Returns the compilation buffer created."
                (list "TERM=emacs"
                      (format "TERMCAP=emacs:co#%d:tc=unknown:"
-             ;; Set the EMACS variable, but
-             ;; don't override users' setting of $EMACS.
-             (unless (getenv "EMACS")
-               (list "EMACS=t"))
-             (list "INSIDE_EMACS=t")
+             (list (format "INSIDE_EMACS=%s,compile" emacs-version))
              (copy-sequence process-environment))))
        (set (make-local-variable 'compilation-arguments)
             (list command mode name-function highlight-regexp))
diff --git a/lisp/term.el b/lisp/term.el
index 43138fa..4c82986 100644
--- a/lisp/term.el
+++ b/lisp/term.el
@@ -1505,11 +1505,6 @@ Using \"emacs\" loses, because bash disables editing if 
$TERM == emacs.")
           (format "TERMINFO=%s" data-directory)
           (format term-termcap-format "TERMCAP="
                   term-term-name term-height term-width)
-          ;; We are going to get rid of the binding for EMACS,
-          ;; probably in Emacs 23, because it breaks
-          ;; `./configure' of some packages that expect it to
-          ;; say where to find EMACS.
-          (format "EMACS=%s (term:%s)" emacs-version term-protocol-version)
           (format "INSIDE_EMACS=%s,term:%s" emacs-version 
           (format "LINES=%d" term-height)
           (format "COLUMNS=%d" term-width))

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