*** empty log message ***

11 files changed, 271 insertions, 108 deletions

diff --git a/lisp/emacs-lisp/autoload.el b/lisp/emacs-lisp/autoload.el
index b399a29bfa0..767621adbd2 100644
--- a/lisp/emacs-lisp/autoload.el
+++ b/lisp/emacs-lisp/autoload.el
@@ -59,14 +59,29 @@ the section of autoloads for a file.")
 (defconst generate-autoload-section-trailer "\n;;;***\n"
   "String which indicates the end of the section of autoloads for a file.")
 
-;; Forms which have doc-strings which should be printed specially.
-;; A doc-string-elt property of ELT says that (nth ELT FORM) is
-;; the doc-string in FORM.
-;; Note: defconst and defvar should NOT be marked in this way.
-;; We don't want to produce defconsts and defvars that make-docfile can
-;; grok, because then it would grok them twice, once in foo.el (where they
-;; are given with ;;;###autoload) and once in loaddefs.el.
+;;; Forms which have doc-strings which should be printed specially.
+;;; A doc-string-elt property of ELT says that (nth ELT FORM) is
+;;; the doc-string in FORM.
+;;;
+;;; There used to be the following note here:
+;;; ;;; Note: defconst and defvar should NOT be marked in this way.
+;;; ;;; We don't want to produce defconsts and defvars that
+;;; ;;; make-docfile can grok, because then it would grok them twice,
+;;; ;;; once in foo.el (where they are given with ;;;###autoload) and
+;;; ;;; once in loaddefs.el.
+;;;
+;;; Counter-note: Yes, they should be marked in this way.
+;;; make-docfile only processes those files that are loaded into the
+;;; dumped Emacs, and those files should never have anything
+;;; autoloaded here.  The above-feared problem only occurs with files
+;;; which have autoloaded entries *and* are processed by make-docfile;
+;;; there should be no such files.
+
 (put 'autoload 'doc-string-elt 3)
+(put 'defun    'doc-string-elt 3)
+(put 'defvar   'doc-string-elt 3)
+(put 'defconst 'doc-string-elt 3)
+(put 'defmacro 'doc-string-elt 3)
 
 (defun generate-file-autoloads (file)
   "Insert at point a loaddefs autoload section for FILE.
@@ -86,6 +101,21 @@ are used."
         (floating-output-format "%20e")
         (done-any nil)
         output-end)
+
+    ;; If the autoload section we create here uses an absolute
+    ;; pathname for FILE in its header, and then Emacs is installed
+    ;; under a different path on another system,
+    ;; `update-autoloads-here' won't be able to find the files to be
+    ;; autoloaded.  So, if FILE is in the same directory or a
+    ;; subdirectory of the current buffer's file, we'll make it
+    ;; relative to the current buffer's directory.
+    (setq file (expand-file-name file))
+    (if (and (< (length default-directory) (length file))
+             (string= default-directory
+                      (substring file 0 (length default-directory))))
+        (progn
+          (setq file (substring file (length default-directory)))))
+
     (message "Generating autoloads for %s..." file)
     (save-excursion
       (set-buffer inbuf)
diff --git a/lisp/emacs-lisp/edebug.el b/lisp/emacs-lisp/edebug.el
index d586367933b..2302f1704f8 100644
--- a/lisp/emacs-lisp/edebug.el
+++ b/lisp/emacs-lisp/edebug.el
@@ -175,7 +175,6 @@
 ;; Put edebug.el in some directory in your load-path and byte-compile it.
 
 ;; Put the following forms in your .emacs file.
-;; (setq edebug-global-prefix "...whatever you want")  ; default is C-xX
 ;; (define-key emacs-lisp-mode-map "\^Xx" 'edebug-defun)
 ;; (autoload 'edebug-defun "edebug")
 ;; (autoload 'edebug-debug "edebug")
@@ -459,17 +458,32 @@ if an error occurs, point is left at the error."
     ))
 
 
-;; The standard eval-current-buffer doesn't use eval-region.
-(if (not (fboundp 'edebug-emacs-eval-current-buffer))
-    (fset 'edebug-emacs-eval-current-buffer
-          (symbol-function 'eval-current-buffer)))
-;; (fset 'eval-current-buffer (symbol-function 'edebug-emacs-eval-current-buffer))
-
-(defun eval-current-buffer (&optional edebug-e-c-b-output)
+(defun edebug-eval-current-buffer (&optional edebug-e-c-b-output)
   "Call eval-region on the whole buffer."
   (interactive)
   (eval-region (point-min) (point-max) edebug-e-c-b-output))
 
+(defun edebug-eval-buffer (&optional buffer edebug-e-c-b-output)
+  "Call eval-region on the whole buffer."
+  (interactive "bEval buffer: ")
+  (save-excursion
+    (set-buffer buffer)
+    (eval-region (point-min) (point-max) edebug-e-c-b-output)))
+
+;; The standard eval-current-buffer doesn't use eval-region.
+(if (and (fboundp 'eval-current-buffer)
+         (not (fboundp 'edebug-emacs-eval-current-buffer)))
+    (progn
+      (fset 'edebug-emacs-eval-current-buffer
+            (symbol-function 'eval-current-buffer))
+      (fset 'eval-current-buffer 'edebug-eval-current-buffer)))
+(if (and (fboundp 'eval-buffer)
+         (not (fboundp 'edebug-emacs-eval-buffer)))
+    (progn
+      (fset 'edebug-emacs-eval-buffer
+            (symbol-function 'eval-buffer))
+      (fset 'eval-buffer 'edebug-eval-buffer)))
+
 
 
 ;;;======================================================================
@@ -498,6 +512,7 @@ if an error occurs, point is left at the error."
 ;;; for more details.
 
 
+;;;###autoload
 (defun edebug-defun ()
   "Evaluate defun or defmacro, like eval-defun, but with edebug calls.
 Print its name in the minibuffer and leave point after any error it finds,
@@ -2416,6 +2431,7 @@ Global commands prefixed by global-edbug-prefix:
 ;; Note that debug and its utilities must be byte-compiled to work, since
 ;; they depend on the backtrace looking a certain way.
 
+;;;###autoload
 (defun edebug-debug (&rest debugger-args)
   "Replacement for debug.  
 If an error or quit occurred and we are running an edebugged function,
diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index f6fb07b0d2f..d3c1c519460 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -490,9 +490,11 @@ of the start of the containing expression."
 If optional arg ENDPOS is given, indent each line, stopping when
 ENDPOS is encountered."
   (interactive)
-  (let ((indent-stack (list nil)) (next-depth 0) last-depth bol
-        outer-loop-done inner-loop-done state this-indent
-        (last-point (point)))
+  (let ((indent-stack (list nil))
+        (next-depth 0)
+        (starting-point (point))
+        (last-point (point))
+        last-depth bol outer-loop-done inner-loop-done state this-indent)
     ;; Get error now if we don't have a complete sexp after point.
     (save-excursion (forward-sexp 1))
     (save-excursion
@@ -529,10 +531,12 @@ ENDPOS is encountered."
                 (setcar (nthcdr 5 state) nil))
             (setq inner-loop-done t)))
         (and endpos
-             (while (<= next-depth 0)
-               (setq indent-stack (append indent-stack (list nil)))
-               (setq next-depth (1+ next-depth))
-               (setq last-depth (1+ last-depth))))
+             (<= next-depth 0)
+             (progn
+               (setq indent-stack (append indent-stack
+                                          (make-list (- next-depth) nil))
+                     last-depth (- last-depth next-depth)
+                     next-depth 0)))
         (or outer-loop-done
             (setq outer-loop-done (<= next-depth 0)))
         (if outer-loop-done
@@ -557,7 +561,7 @@ ENDPOS is encountered."
                 (setq this-indent (car indent-stack))
               (let ((val (calculate-lisp-indent
                           (if (car indent-stack) (- (car indent-stack))
-                            last-point))))
+                            starting-point))))
                 (if (integerp val)
                     (setcar indent-stack
                             (setq this-indent val))
diff --git a/lisp/frame.el b/lisp/frame.el
index e756f9d0c2b..e8a52af962f 100644
--- a/lisp/frame.el
+++ b/lisp/frame.el
@@ -264,8 +264,10 @@ under the X Window System."
                             (list (cons 'horizontal-scroll-bar toggle))))
 
 ;;;; Key bindings
-(define-prefix-command 'ctl-x-5-map)
-(define-key ctl-x-map "5" 'ctl-x-5-map)
+(defvar ctl-x-5-map (make-sparse-keymap)
+  "Keymap for screen commands.")
+(fset 'ctl-x-5-prefix ctl-x-5-map)
+(define-key ctl-x-map "5" 'ctl-x-5-prefix)
 
 (define-key ctl-x-5-map "2" 'new-screen)
 (define-key ctl-x-5-map "0" 'delete-screen)
diff --git a/lisp/play/blackbox.el b/lisp/play/blackbox.el
index 59a21a25708..002a33ec37f 100644
--- a/lisp/play/blackbox.el
+++ b/lisp/play/blackbox.el
@@ -1,12 +1,12 @@
 ;;; blackbox.el --- blackbox game in Emacs Lisp
 
-;; Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1986, 1987, 1992 Free Software Foundation, Inc.
 
 ;; This file is part of GNU Emacs.
 
 ;; GNU Emacs is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 1, or (at your option)
+;; the Free Software Foundation; either version 2, or (at your option)
 ;; any later version.
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
@@ -114,6 +114,7 @@ The usual mnemonic keys move the cursor around the box.
   (setq major-mode 'blackbox-mode)
   (setq mode-name "Blackbox"))
 
+;;;###autoload
 (defun blackbox (num)
   "Play blackbox.  Optional prefix argument is the number of balls;
 the default is 4.
diff --git a/lisp/progmodes/compile.el b/lisp/progmodes/compile.el
index a71ac512dd4..ac1be6b9773 100644
--- a/lisp/progmodes/compile.el
+++ b/lisp/progmodes/compile.el
@@ -1,4 +1,4 @@
-;;; compile.el --- run compiler as inferior of Emacs, and parse its error messages.
+;;; compile.el --- run compiler as inferior of Emacs, parse error messages.
 
 ;;;!!! dup removal is broken.
 
@@ -84,21 +84,24 @@ are found.")
     ("^\\([^:( \t\n]+\\)[:( \t]+\\([0-9]+\\)[:) \t]" 1 2)
     ;; 4.3BSD lint pass 2
     ;; strcmp: variable # of args. llib-lc(359)  ::  /usr/src/foo/foo.c(8)
-    ("[ \t:]+\\([^:( \t\n]+\\)[ \t]*[:(]+[ \t]*\\([0-9]+\\)[:) \t]*$" 1 2)
+    ("[ \t:]+\\([^:( \t\n]+\\)[ \t]*[:(]*(+[ \t]*\\([0-9]+\\))[:) \t]*$" 1 2)
     ;; 4.3BSD lint pass 3
     ;; bloofle defined( /users/wolfgang/foo.c(4) ), but never used
-    ("[ \t(]+\\([^:( \t\n]+\\)[:( \t]+\\([0-9]+\\)[:) \t]+" 1 2)
+    ;; This used to be
+    ;; ("[ \t(]+\\([^:( \t\n]+\\)[:( \t]+\\([0-9]+\\)[:) \t]+" 1 2)
+    ;; which is regexp Impressionism - it matches almost anything!
+    ("([ \t]*\\([^:( \t\n]+\\)[ \t]*[:(][ \t]*\\([0-9]+\\))" 1 2)
     ;; Line 45 of "foo.c": bloofel undefined (who does this?)
-    ("^[Ll]ine[ \t]+\\([0-9]+\\)[ \t]+of[ \t]+\"\\([^\"]+\\)\":" 2 1)
+    ("^[Ll]ine[ \t]+\\([0-9]+\\)[ \t]+of[ \t]+\"\\([^\"\n]+\\)\":" 2 1)
     ;; Apollo cc, 4.3BSD fc
     ;; "foo.f", line 3: Error: syntax error near end of statement
-    ("^\"\\([^\"]+\\)\", line \\([0-9]+\\):" 1 2)
+    ("^\"\\([^\"\n]+\\)\", line \\([0-9]+\\):" 1 2)
     ;; HP-UX 7.0 fc
     ;; foo.f          :16    some horrible error message
-    ("\\([^ \t:]+\\)[ \t]*:\\([0-9]+\\)" 1 2)
+    ("^\\([^ \t\n:]+\\)[ \t]*:\\([0-9]+\\)" 1 2)
     ;; IBM AIX PS/2 C version 1.1
     ;; ****** Error number 140 in line 8 of file errors.c ******
-    ("in line \\([0-9]+\\) of file \\([^ ]+[^. ]\\)\\.? " 2 1)
+    ("in line \\([0-9]+\\) of file \\([^ \n]+[^. \n]\\)\\.? " 2 1)
     ;; IBM AIX lint is too painful to do right this way.  File name
     ;; prefixes entire sections rather than being on each line.
     )
@@ -132,18 +135,18 @@ Typically \"grep -n\" or \"egrep -n\".
 \(The \"-n\" option tells grep to output line numbers.)")
 
 (defconst compilation-enter-directory-regexp
-  ": Entering directory `\\\(.*\\\)'$"
+  ": Entering directory `\\(.*\\)'$"
   "Regular expression for a line in the compilation log that
-changes the current directory.  This must contain one \\\(, \\\) pair
+changes the current directory.  This must contain one \\(, \\) pair
 around the directory name.
 
 The default value matches lines printed by the `-w' option of GNU Make.")
 
 (defconst compilation-leave-directory-regexp
-  ": Leaving directory `\\\(.*\\\)'$"
+  ": Leaving directory `\\(.*\\)'$"
   "Regular expression for a line in the compilation log that
 changes the current directory to a previous value.  This may
-contain one \\\(, \\\) pair around the name of the directory
+contain one \\(, \\) pair around the name of the directory
 being moved from.  If it does not, the last directory entered
 \(by a line matching `compilation-enter-directory-regexp'\) is assumed.
 
@@ -343,6 +346,8 @@ Runs `compilation-mode-hook' with `run-hooks' (which see)."
                    (setq omax (point-max)
                          opoint (point))
                    (goto-char omax)
+                   ;; Record where we put the message, so we can ignore it
+                   ;; later on.
                    (insert ?\n mode-name " " msg)
                    (forward-char -1)
                    (insert " at " (substring (current-time-string) 0 19))
diff --git a/lisp/progmodes/etags.el b/lisp/progmodes/etags.el
index c7daec726ee..3f2f911daed 100644
--- a/lisp/progmodes/etags.el
+++ b/lisp/progmodes/etags.el
@@ -1,12 +1,12 @@
 ;;; etags.el --- tags facility for Emacs.
 
-;; Copyright (C) 1985, 1986, 1988 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1986, 1988, 1992 Free Software Foundation, Inc.
 
 ;; This file is part of GNU Emacs.
 
 ;; GNU Emacs is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 1, or (at your option)
+;; the Free Software Foundation; either version 2, or (at your option)
 ;; any later version.
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
@@ -244,6 +244,26 @@ See documentation of variable tags-file-name."
 ;;;###autoload
 (define-key ctl-x-4-map "." 'find-tag-other-window)
 
+;;;###autoload
+(defun find-tag-other-frame (tagname &optional next)
+  "Find tag (in current tag table) whose name contains TAGNAME.
+ Selects the buffer that the tag is contained in in another frame
+and puts point at its definition.
+ If TAGNAME is a null string, the expression in the buffer
+around or before point is used as the tag name.
+ If second arg NEXT is non-nil (interactively, with prefix arg),
+searches for the next tag in the tag table
+that matches the tagname used in the previous find-tag.
+
+See documentation of variable tags-file-name."
+  (interactive (if current-prefix-arg
+                   '(nil t)
+                   (find-tag-tag "Find tag other window: ")))
+  (let ((pop-up-screens t))
+    (find-tag tagname next t)))
+;;;###autoload
+(define-key ctl-x-5-map "." 'find-tag-other-frame)
+
 (defvar next-file-list nil
   "List of files for next-file to process.")
 
diff --git a/lisp/progmodes/inf-lisp.el b/lisp/progmodes/inf-lisp.el
index 98299190f49..11fc14af064 100644
--- a/lisp/progmodes/inf-lisp.el
+++ b/lisp/progmodes/inf-lisp.el
@@ -100,11 +100,8 @@
 ;;; c-m-x   lisp-eval-defun         This binding is a gnu convention.
 ;;; c-c c-e lisp-eval-defun         Send the current defun to Lisp process.
 ;;; c-x c-e lisp-eval-last-sexp     Send the previous sexp to Lisp process.
-;;; c-c m-e lisp-eval-defun-and-go  After sending the defun, switch-to-lisp.
 ;;; c-c c-r lisp-eval-region        Send the current region to Lisp process.
-;;; c-c m-r lisp-eval-region-and-go After sending the region, switch-to-lisp.
 ;;; c-c c-c lisp-compile-defun      Compile the current defun in Lisp process.
-;;; c-c m-c lisp-compile-defun-and-go After compiling defun, switch-to-lisp.
 ;;; c-c c-z switch-to-lisp          Switch to the Lisp process buffer.
 ;;; c-c c-l lisp-load-file          (See above. In a Lisp file buffer, default
 ;;; c-c c-k lisp-compile-file        is to load/compile the current file.)
@@ -115,7 +112,6 @@
 
 ;;; cmulisp                         Fires up the Lisp process.
 ;;; lisp-compile-region             Compile all forms in the current region.
-;;; lisp-compile-region-and-go      After compiling region, switch-to-lisp.
 ;;;
 ;;; CMU Lisp Mode Variables:
 ;;; cmulisp-filter-regexp           Match this => don't get saved on input hist
@@ -154,11 +150,8 @@ mode. Default is whitespace followed by 0 or 1 single-letter :keyword
 (define-key lisp-mode-map "\M-\C-x"  'lisp-eval-defun)     ; Gnu convention
 (define-key lisp-mode-map "\C-x\C-e" 'lisp-eval-last-sexp) ; Gnu convention
 (define-key lisp-mode-map "\C-c\C-e" 'lisp-eval-defun)
-(define-key lisp-mode-map "\C-c\M-e" 'lisp-eval-defun-and-go)
 (define-key lisp-mode-map "\C-c\C-r" 'lisp-eval-region)
-(define-key lisp-mode-map "\C-c\M-r" 'lisp-eval-region-and-go)
 (define-key lisp-mode-map "\C-c\C-c" 'lisp-compile-defun)
-(define-key lisp-mode-map "\C-c\M-c" 'lisp-compile-defun-and-go)
 (define-key lisp-mode-map "\C-c\C-z" 'switch-to-lisp)
 (define-key lisp-mode-map "\C-c\C-l" 'lisp-load-file)
 (define-key lisp-mode-map "\C-c\C-k" 'lisp-compile-file)  ; "kompile" file
@@ -168,6 +161,37 @@ mode. Default is whitespace followed by 0 or 1 single-letter :keyword
 (define-key lisp-mode-map "\C-c\C-v" 'lisp-show-variable-documentation)
 
 
+;;; This function exists for backwards compatibility.
+;;; Previous versions of this package bound commands to C-c <letter>
+;;; bindings, which is not allowed by the gnumacs standard.
+
+(defun cmulisp-install-letter-bindings ()
+  "This function binds many cmulisp commands to C-c <letter> bindings,
+where they are more accessible. C-c <letter> bindings are reserved for the
+user, so these bindings are non-standard. If you want them, you should
+have this function called by the cmulisp-load-hook:
+    (setq cmulisp-load-hook '(cmulisp-install-letter-bindings))
+You can modify this function to install just the bindings you want."
+
+  (define-key lisp-mode-map "\C-ce" 'lisp-eval-defun-and-go)
+  (define-key lisp-mode-map "\C-cr" 'lisp-eval-region-and-go)
+  (define-key lisp-mode-map "\C-cc" 'lisp-compile-defun-and-go)
+  (define-key lisp-mode-map "\C-cz" 'switch-to-lisp)
+  (define-key lisp-mode-map "\C-cl" 'lisp-load-file)
+  (define-key lisp-mode-map "\C-ck" 'lisp-compile-file)
+  (define-key lisp-mode-map "\C-ca" 'lisp-show-arglist)
+  (define-key lisp-mode-map "\C-cd" 'lisp-describe-sym)
+  (define-key lisp-mode-map "\C-cf" 'lisp-show-function-documentation)
+  (define-key lisp-mode-map "\C-cv" 'lisp-show-variable-documentation)
+
+  (define-key cmulisp-mode-map "\C-cl" 'lisp-load-file)
+  (define-key cmulisp-mode-map "\C-ck" 'lisp-compile-file)
+  (define-key cmulisp-mode-map "\C-ca" 'lisp-show-arglist)
+  (define-key cmulisp-mode-map "\C-cd" 'lisp-describe-sym)
+  (define-key cmulisp-mode-map "\C-cf" 'lisp-show-function-documentation)
+  (define-key cmulisp-mode-map "\C-cv" 'lisp-show-variable-documentation))
+
+
 (defvar inferior-lisp-program "lisp"
   "*Program name for invoking an inferior Lisp with `cmulisp'.")
 
@@ -220,9 +244,9 @@ Lisp source.
     lisp-eval-region sends the current region to the Lisp process.
     lisp-compile-region compiles the current region.
 
-    lisp-eval-defun-and-go, lisp-compile-defun-and-go,
-        lisp-eval-region-and-go, and lisp-compile-region-and-go
-        switch to the Lisp process buffer after sending their text.
+    Prefixing the lisp-eval/compile-defun/region commands with
+    a \\[universal-argument] causes a switch to the Lisp process buffer after sending
+    the text.
 
 Commands:
 Return after the end of the process' output sends the text from the 
@@ -262,54 +286,87 @@ to continue it."
   "Don't save anything matching cmulisp-filter-regexp"
   (not (string-match cmulisp-filter-regexp str)))
 
-(defun cmulisp ()
+(defun cmulisp (cmd)
   "Run an inferior Lisp process, input and output via buffer *cmulisp*.
 If there is a process already running in *cmulisp*, just switch to that buffer.
-Takes the program name from the variable inferior-lisp-program.
+With argument, allows you to edit the command line (default is value
+of inferior-lisp-program).  Runs the hooks from cmulisp-mode-hook (after the
+comint-mode-hook is run).
 \(Type \\[describe-mode] in the process buffer for a list of commands.)"
-  (interactive)
-  (cond ((not (comint-check-proc "*cmulisp*"))
-         (set-buffer (make-comint "cmulisp" inferior-lisp-program))
+  (interactive (list (if current-prefix-arg
+                         (read-string "Run lisp: " inferior-lisp-program)
+                         inferior-lisp-program)))
+  (if (not (comint-check-proc "*cmulisp*"))
+      (let ((cmdlist (cmulisp-args-to-list cmd)))
+         (set-buffer (apply (function make-comint) "cmulisp" (car cmdlist) nil
+                            (cdr cmdlist)))
          (cmulisp-mode)))
   (setq cmulisp-buffer "*cmulisp*")
   (switch-to-buffer "*cmulisp*"))
 
-(defun lisp-eval-region (start end)
-  "Send the current region to the inferior Lisp process."
-  (interactive "r")
+;;; Break a string up into a list of arguments.
+;;; This will break if you have an argument with whitespace, as in
+;;; string = "-ab +c -x 'you lose'".
+(defun cmulisp-args-to-list (string)
+  (let ((where (string-match "[ \t]" string)))
+    (cond ((null where) (list string))
+          ((not (= where 0))
+           (cons (substring string 0 where)
+                 (tea-args-to-list (substring string (+ 1 where)
+                                              (length string)))))
+          (t (let ((pos (string-match "[^ \t]" string)))
+               (if (null pos)
+                   nil
+                 (cmulsip-args-to-list (substring string pos
+                                                  (length string)))))))))
+
+(defun lisp-eval-region (start end &optional and-go)
+  "Send the current region to the inferior Lisp process.
+Prefix argument means switch-to-lisp afterwards."
+  (interactive "r\nP")
   (comint-send-region (cmulisp-proc) start end)
-  (comint-send-string (cmulisp-proc) "\n"))
+  (comint-send-string (cmulisp-proc) "\n")
+  (if and-go (switch-to-lisp t)))
 
-(defun lisp-eval-defun ()
-  "Send the current defun to the inferior Lisp process."
-  (interactive)
+(defun lisp-eval-defun (&optional and-go)
+  "Send the current defun to the inferior Lisp process.
+Prefix argument means switch-to-lisp afterwards."
+  (interactive "P")
   (save-excursion
-   (end-of-defun)
-   (let ((end (point)))
-     (beginning-of-defun)
-     (lisp-eval-region (point) end))))
+    (end-of-defun)
+    (skip-chars-backward " \t\n\r\f") ;  Makes allegro happy
+    (let ((end (point)))
+      (beginning-of-defun)
+      (lisp-eval-region (point) end)))
+  (if and-go (switch-to-lisp t)))
 
-(defun lisp-eval-last-sexp ()
-  "Send the previous sexp to the inferior Lisp process."
-  (interactive)
-  (lisp-eval-region (save-excursion (backward-sexp) (point)) (point)))
+(defun lisp-eval-last-sexp (&optional and-go)
+  "Send the previous sexp to the inferior Lisp process.
+Prefix argument means switch-to-lisp afterwards."
+  (interactive "P")
+  (lisp-eval-region (save-excursion (backward-sexp) (point)) (point) and-go))
 
-;;; CommonLisp COMPILE sux. 
-(defun lisp-compile-region (start end)
-  "Compile the current region in the inferior Lisp process."
-  (interactive "r")
+;;; Common Lisp COMPILE sux. 
+(defun lisp-compile-region (start end &optional and-go)
+  "Compile the current region in the inferior Lisp process.
+Prefix argument means switch-to-lisp afterwards."
+  (interactive "r\nP")
   (comint-send-string (cmulisp-proc)
     (format "(funcall (compile nil `(lambda () (progn 'compile %s))))\n"
-            (buffer-substring start end))))
+            (buffer-substring start end)))
+  (if and-go (switch-to-lisp t)))
                          
-(defun lisp-compile-defun ()
-  "Compile the current defun in the inferior Lisp process."
-  (interactive)
+(defun lisp-compile-defun (&optional and-go)
+  "Compile the current defun in the inferior Lisp process.
+Prefix argument means switch-to-lisp afterwards."
+  (interactive "P")
   (save-excursion
     (end-of-defun)
+    (skip-chars-backward " \t\n\r\f") ;  Makes allegro happy
     (let ((e (point)))
       (beginning-of-defun)
-      (lisp-compile-region (point) e))))
+      (lisp-compile-region (point) e)))
+  (if and-go (switch-to-lisp t)))
 
 (defun switch-to-lisp (eob-p)
   "Switch to the inferior Lisp process buffer.
@@ -322,33 +379,35 @@ With argument, positions cursor at end of buffer."
          (push-mark)
          (goto-char (point-max)))))
 
+
+;;; Now that lisp-compile/eval-defun/region takes an optional prefix arg,
+;;; these commands are redundant. But they are kept around for the user
+;;; to bind if he wishes, for backwards functionality, and because it's
+;;; easier to type C-c e than C-u C-c C-e.
+
 (defun lisp-eval-region-and-go (start end)
   "Send the current region to the inferior Lisp, 
 and switch to the process buffer."
   (interactive "r")
-  (lisp-eval-region start end)
-  (switch-to-lisp t))
+  (lisp-eval-region start end t))
 
 (defun lisp-eval-defun-and-go ()
   "Send the current defun to the inferior Lisp, 
 and switch to the process buffer."
   (interactive)
-  (lisp-eval-defun)
-  (switch-to-lisp t))
+  (lisp-eval-defun t))
 
 (defun lisp-compile-region-and-go (start end)
   "Compile the current region in the inferior Lisp, 
 and switch to the process buffer."
   (interactive "r")
-  (lisp-compile-region start end)
-  (switch-to-lisp t))
+  (lisp-compile-region start end t))
 
 (defun lisp-compile-defun-and-go ()
   "Compile the current defun in the inferior Lisp, 
 and switch to the process buffer."
   (interactive)
-  (lisp-compile-defun)
-  (switch-to-lisp t))
+  (lisp-compile-defun t))
 
 ;;; A version of the form in H. Shevis' soar-mode.el package. Less robust.
 ;(defun lisp-compile-sexp (start end)
@@ -406,7 +465,8 @@ Used by these commands to determine defaults.")
   (setq lisp-prev-l/c-dir/file (cons (file-name-directory    file-name)
                                      (file-name-nondirectory file-name)))
   (comint-send-string (cmulisp-proc)
-                      (format inferior-lisp-load-command file-name)))
+                      (format inferior-lisp-load-command file-name))
+  (switch-to-lisp t))
 
 
 (defun lisp-compile-file (file-name)
@@ -419,7 +479,8 @@ Used by these commands to determine defaults.")
                                      (file-name-nondirectory file-name)))
   (comint-send-string (cmulisp-proc) (concat "(compile-file \""
                                              file-name
-                                             "\"\)\n")))
+                                             "\"\)\n"))
+  (switch-to-lisp t))
 
 
 
@@ -541,7 +602,7 @@ have three inferior lisps running:
     foo         cmulisp
     bar         cmulisp<2>
     *cmulisp*   cmulisp<3>
-If you do a \\[lisp-eval-defun-and-go] command on some Lisp source code, 
+If you do a \\[lisp-eval-defun] command on some Lisp source code, 
 what process do you send it to?
 
 - If you're in a process buffer (foo, bar, or *cmulisp*), 
@@ -598,6 +659,25 @@ This is a good place to put keybindings.")
 ;;; 3/12/90 Olin
 ;;; - lisp-load-file and lisp-compile-file no longer switch-to-lisp.
 ;;;   Tale suggested this.
+;;; - Reversed this decision 7/15/91. You need the visual feedback.
+;;;
+;;; 7/25/91 Olin
+;;; Changed all keybindings of the form C-c <letter>. These are
+;;; supposed to be reserved for the user to bind. This affected
+;;; mainly the compile/eval-defun/region[-and-go] commands.
+;;; This was painful, but necessary to adhere to the gnumacs standard.
+;;; For some backwards compatibility, see the 
+;;;     cmulisp-install-letter-bindings
+;;; function.
+;;;
+;;; 8/2/91 Olin
+;;; - The lisp-compile/eval-defun/region commands now take a prefix arg,
+;;;   which means switch-to-lisp after sending the text to the Lisp process.
+;;;   This obsoletes all the -and-go commands. The -and-go commands are
+;;;   kept around for historical reasons, and because the user can bind
+;;;   them to key sequences shorter than C-u C-c C-<letter>.
+;;; - If M-x cmulisp is invoked with a prefix arg, it allows you to
+;;;   edit the command line.
 
 (provide 'cmulisp)
 
diff --git a/lisp/simple.el b/lisp/simple.el
index 8c555190de1..3989a3685a2 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -724,7 +724,14 @@ text that other programs have provided for pasting.
 The function should be called with no arguments.  If the function
 returns nil, then no other program has provided such text, and the top
 of the Emacs kill ring should be used.  If the function returns a
-string, that string should be put in the kill ring as the latest kill.")
+string, that string should be put in the kill ring as the latest kill.
+
+Note that the function should return a string only if a program other
+than Emacs has provided a string for pasting; if Emacs provided the
+most recent string, the function should return nil.  If it is
+difficult to tell whether Emacs or some other program provided the
+current string, it is probably good enough to return nil if the string
+is equal (according to `string=') to the last text Emacs provided.")
 
 
 
diff --git a/lisp/term/x-win.el b/lisp/term/x-win.el
index 3f6cefe0a6f..22237e5e21a 100644
--- a/lisp/term/x-win.el
+++ b/lisp/term/x-win.el
@@ -447,6 +447,11 @@ This returns ARGS with the arguments that have been processed removed."
       '(lambda ()
          (error "Suspending an emacs running under X makes no sense")))
 
+;;; We keep track of the last text selected here, so we can check the
+;;; current selection against it, and avoid passing back our own text
+;;; from x-cut-buffer-or-selection-value.
+(defvar x-last-selected-text nil)
+
 ;;; Make TEXT, a string, the primary and clipboard X selections.
 ;;; If you are running xclipboard, this means you can effectively
 ;;; have a window on a copy of the kill-ring.
@@ -455,14 +460,19 @@ This returns ARGS with the arguments that have been processed removed."
 (defun x-select-text (text)
   (x-own-selection text 'cut-buffer0)
   (x-own-selection text 'clipboard)
-  (x-own-selection text))
+  (x-own-selection text)
+  (setq x-last-selected-text text))
 
 ;;; Return the value of the current X selection.  For compatibility
 ;;; with older X applications, this checks cut buffer 0 before
 ;;; retrieving the value of the primary selection.
 (defun x-cut-buffer-or-selection-value ()
-  (or (x-selection-value 'cut-buffer0)
-      (x-selection-value)))
+  (let ((text (or (x-selection-value 'cut-buffer0)
+                  (x-selection-value))))
+    (if (string= text x-last-selected-text)
+        nil
+      (setq x-last-selected-text nil)
+      text)))
 
 ;;; Arrange for the kill and yank functions to set and check the clipboard.
 (setq interprogram-cut-function 'x-select-text)
diff --git a/lisp/textmodes/text-mode.el b/lisp/textmodes/text-mode.el
index 56a4ab59c59..a87d2b09251 100644
--- a/lisp/textmodes/text-mode.el
+++ b/lisp/textmodes/text-mode.el
@@ -1,12 +1,12 @@
 ;;; text-mode.el --- text mode, and its idiosyncratic commands.
 
-;; Copyright (C) 1985 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1992 Free Software Foundation, Inc.
 
 ;; This file is part of GNU Emacs.
 
 ;; GNU Emacs is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 1, or (at your option)
+;; the Free Software Foundation; either version 2, or (at your option)
 ;; any later version.
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
@@ -94,18 +94,6 @@ if that value is non-nil."
   (setq major-mode 'indented-text-mode)
   (run-hooks 'text-mode-hook))
 
-(defun change-log-mode ()
-  "Major mode for editing ChangeLog files.  See M-x add-change-log-entry.
-Almost the same as Indented Text mode, but prevents numeric backups
-and sets `left-margin' to 8 and `fill-column' to 74."
-  (interactive)
-  (indented-text-mode)
-  (setq left-margin 8)
-  (setq fill-column 74)
-  (make-local-variable 'version-control)
-  (setq version-control 'never)
-  (run-hooks 'change-log-mode-hook))
-
 (defun center-paragraph ()
   "Center each nonblank line in the paragraph at or after point.
 See center-line for more info."