1 files changed, 36 insertions, 65 deletions

diff --git a/lisp/term.el b/lisp/term.el
index fdcc39de722..e759bb8e4fd 100644
--- a/lisp/term.el
+++ b/lisp/term.el
@@ -284,17 +284,6 @@
 ;; merge them into the master source.
 ;;     - Per Bothner (bothner@cygnus.com)
 
-;; This file defines a general command-interpreter-in-a-buffer package
-;; (term mode).  The idea is that you can build specific process-in-a-buffer
-;; modes on top of term mode -- e.g., lisp, shell, scheme, T, soar, ....
-;; This way, all these specific packages share a common base functionality,
-;; and a common set of bindings, which makes them easier to use (and
-;; saves code, implementation time, etc., etc.).
-
-;; For hints on converting existing process modes (e.g., tex-mode,
-;; background, dbx, gdb, kermit, prolog, telnet) to use term-mode
-;; instead of shell-mode, see the notes at the end of this file.
-
 
 ;; Brief Command Documentation:
 ;;============================================================================
@@ -406,7 +395,9 @@ This emulates (more or less) the behavior of xterm.")
 (defvar term-pager-count nil
   "Number of lines before we need to page; if nil, paging is disabled.")
 (defvar term-saved-cursor nil)
-(defvar term-command-hook)
+(define-obsolete-variable-alias 'term-command-hook
+  'term-command-function "27.1")
+(defvar term-command-function #'term-command-hook)
 (defvar term-log-buffer nil)
 (defvar term-scroll-with-delete nil
   "If t, forward scrolling should be implemented by delete to
@@ -546,8 +537,7 @@ This means text can automatically reflow if the window is resized."
   :type 'boolean
   :group 'term)
 (make-obsolete-variable 'term-suppress-hard-newline nil
-                        "27.1"
-                        'set)
+                        "27.1")
 
 ;; Where gud-display-frame should put the debugging arrow.  This is
 ;; set by the marker-filter, which scans the debugger's output for
@@ -582,7 +572,7 @@ These functions get one argument, a string containing the text to send.
 
 This variable is buffer-local.")
 
-(defvar term-input-sender (function term-simple-send)
+(defvar term-input-sender #'term-simple-send
   "Function to actually send to PROCESS the STRING submitted by user.
 Usually this is just `term-simple-send', but if your mode needs to
 massage the input string, this is your hook.  This is called from
@@ -1039,8 +1029,6 @@ Entry to this mode runs the hooks on `term-mode-hook'."
   (set (make-local-variable 'term-last-input-start) (make-marker))
   (set (make-local-variable 'term-last-input-end) (make-marker))
   (set (make-local-variable 'term-last-input-match) "")
-  (set (make-local-variable 'term-command-hook)
-       (symbol-function 'term-command-hook))
 
   ;; These local variables are set to their local values:
   (make-local-variable 'term-saved-home-marker)
@@ -1094,21 +1082,18 @@ Entry to this mode runs the hooks on `term-mode-hook'."
   (make-local-variable 'term-pager-old-local-map)
   (make-local-variable 'term-old-mode-map)
   (make-local-variable 'term-insert-mode)
-  (make-local-variable 'term-dynamic-complete-functions)
   (make-local-variable 'term-completion-fignore)
   (make-local-variable 'term-get-old-input)
   (make-local-variable 'term-matching-input-from-input-string)
   (make-local-variable 'term-input-autoexpand)
   (make-local-variable 'term-input-ignoredups)
   (make-local-variable 'term-delimiter-argument-list)
-  (make-local-variable 'term-input-filter-functions)
   (make-local-variable 'term-input-filter)
   (make-local-variable 'term-input-sender)
   (make-local-variable 'term-eol-on-send)
   (make-local-variable 'term-scroll-to-bottom-on-output)
   (make-local-variable 'term-scroll-show-maximum-output)
   (make-local-variable 'term-ptyp)
-  (make-local-variable 'term-exec-hook)
   (set (make-local-variable 'term-vertical-motion) 'vertical-motion)
   (set (make-local-variable 'term-pending-delete-marker) (make-marker))
   (make-local-variable 'term-current-face)
@@ -1144,7 +1129,7 @@ Entry to this mode runs the hooks on `term-mode-hook'."
     (while (setq fake-newline (next-single-property-change (point)
                                                            'term-line-wrap))
       (goto-char fake-newline)
-      (assert (eq ?\n (char-after)))
+      (cl-assert (eq ?\n (char-after)))
       (let ((inhibit-read-only t))
         (delete-char 1)))))
 
@@ -1329,16 +1314,14 @@ intervention from Emacs, except for the escape character (usually C-c)."
     (add-hook 'post-command-hook #'term-goto-process-mark-maybe nil t)
 
     ;; Send existing partial line to inferior (without newline).
-    (let ((pmark (process-mark (get-buffer-process (current-buffer))))
-          (save-input-sender term-input-sender))
+    (let ((pmark (process-mark (get-buffer-process (current-buffer)))))
       (when (> (point) pmark)
         (unwind-protect
             (progn
-              (setq term-input-sender
-                    (symbol-function 'term-send-string))
+              (add-function :override term-input-sender #'term-send-string)
               (end-of-line)
               (term-send-input))
-          (setq term-input-sender save-input-sender))))
+          (remove-function term-input-sender #'term-send-string))))
     (term-update-mode-line)))
 
 (defun term-line-mode  ()
@@ -1468,8 +1451,8 @@ buffer.  The hook `term-exec-hook' is run after each exec."
       ;; Jump to the end, and set the process mark.
       (goto-char (point-max))
       (set-marker (process-mark proc) (point))
-      (set-process-filter proc 'term-emulate-terminal)
-      (set-process-sentinel proc 'term-sentinel)
+      (set-process-filter proc #'term-emulate-terminal)
+      (set-process-sentinel proc #'term-sentinel)
       ;; Feed it the startfile.
       (when startfile
         ;;This is guaranteed to wait long enough
@@ -1598,7 +1581,7 @@ Nil if unknown.")
     (when (term--bash-needs-EMACSp)
       (push (format "EMACS=%s (term:%s)" emacs-version term-protocol-version)
             process-environment))
-    (apply 'start-process name buffer
+    (apply #'start-process name buffer
            "/bin/sh" "-c"
            (format "stty -nl echo rows %d columns %d sane 2>/dev/null;\
 if [ $1 = .. ]; then shift; fi; exec \"$@\""
@@ -2092,7 +2075,7 @@ Argument 0 is the command name."
     (let ((n (or nth (1- count)))
           (m (if mth (1- (- count mth)) 0)))
       (mapconcat
-       (function (lambda (a) a)) (nthcdr n (nreverse (nthcdr m args))) " "))))
+       #'identity (nthcdr n (nreverse (nthcdr m args))) " "))))
 
 ;;;
 ;;; Input processing stuff [line mode]
@@ -2172,10 +2155,7 @@ Similarly for Soar, Scheme, etc."
                        (not (string-equal (ring-ref term-input-ring 0)
                                           history))))
           (ring-insert term-input-ring history))
-        (let ((functions term-input-filter-functions))
-          (while functions
-            (funcall (car functions) (concat input "\n"))
-            (setq functions (cdr functions))))
+        (run-hook-with-args 'term-input-filter-functions (concat input "\n"))
         (setq term-input-ring-index nil)
 
         ;; Update the markers before we send the input
@@ -3009,7 +2989,7 @@ See `term-prompt-regexp'."
                 (?\C-g                  ;; (terminfo: bel)
                  (beep t))
                 (?\032 ; Emacs specific control sequence.
-                 (funcall term-command-hook
+                 (funcall term-command-function
                           (decode-coding-string
                            (substring str (1+ i)
                                       (- ctl-end
@@ -3103,8 +3083,10 @@ See `term-prompt-regexp'."
                         (setq term-terminal-undecoded-bytes (substring str (1- i)))
                         (aset term-terminal-undecoded-bytes 0 ?\r))
                       (goto-char (point-max)))
+                    ;; FIXME: Use (add-function :override (process-filter proc)
                     (make-local-variable 'term-pager-old-filter)
                     (setq term-pager-old-filter (process-filter proc))
+                    ;; FIXME: Where is `term-pager-filter' set to a function?!
                     (set-process-filter proc term-pager-filter)
                     (setq i str-length))
                 (setq i ctl-end)))))
@@ -3486,7 +3468,7 @@ The top-most line is line 0."
 ;;      (setq term-current-row 0)
 ;;      (term-goto row col))))
 
-;; Default value for the symbol term-command-hook.
+;; Default value for the symbol term-command-function.
 
 (defun term-command-hook (string)
   (cond ((equal string "")
@@ -4040,9 +4022,7 @@ Calls the functions in `term-dynamic-complete-functions' to perform
 completion until a function returns non-nil, at which point completion is
 assumed to have occurred."
   (interactive)
-  (let ((functions term-dynamic-complete-functions))
-    (while (and functions (null (funcall (car functions))))
-      (setq functions (cdr functions)))))
+  (run-hook-with-args-until-success 'term-dynamic-complete-functions))
 
 
 (defun term-dynamic-complete-filename ()
@@ -4142,7 +4122,6 @@ Returns `listed' if a completion listing was shown.
 See also `term-dynamic-complete-filename'."
   (declare (obsolete completion-in-region "23.2"))
   (let* ((completion-ignore-case nil)
-         (candidates (mapcar (function (lambda (x) (list x))) candidates))
          (completions (all-completions stub candidates)))
     (cond ((null completions)
            (message "No completions of %s" stub)
@@ -4367,9 +4346,9 @@ well as the newer ports COM10 and higher."
       (setq serial-name-history file-name-history))
     (when (or (null x) (and (stringp x) (zerop (length x))))
       (error "No serial port selected"))
-    (when (and (not (serial-port-is-file-p))
-               (not (string-match "\\\\" x)))
-      (set 'x (concat "\\\\.\\" x)))
+    (when (not (or (serial-port-is-file-p)
+                   (string-match "\\\\" x)))
+      (setq x (concat "\\\\.\\" x)))
     x))
 
 (defun serial-read-speed ()
@@ -4423,8 +4402,8 @@ use in that buffer.
       (term-char-mode)
       (goto-char (point-max))
       (set-marker (process-mark process) (point))
-      (set-process-filter process 'term-emulate-terminal)
-      (set-process-sentinel process 'term-sentinel))
+      (set-process-filter process #'term-emulate-terminal)
+      (set-process-sentinel process #'term-sentinel))
     (switch-to-buffer buffer)
     buffer))
 
@@ -4561,27 +4540,19 @@ The return value may be nil for a special serial port."
 ;; term-mode will take care of it.  The following example, from shell.el,
 ;; is typical:
 ;;
-;; (defvar shell-mode-map '())
-;; (cond ((not shell-mode-map)
-;;        (setq shell-mode-map (copy-keymap term-mode-map))
-;;        (define-key shell-mode-map "\C-c\C-f" 'shell-forward-command)
-;;        (define-key shell-mode-map "\C-c\C-b" 'shell-backward-command)
-;;        (define-key shell-mode-map "\t" 'term-dynamic-complete)
-;;        (define-key shell-mode-map "\M-?"
-;;          'term-dynamic-list-filename-completions)))
-;;
-;; (defun shell-mode ()
-;;   (interactive)
-;;   (term-mode)
-;;   (setq term-prompt-regexp shell-prompt-pattern)
-;;   (setq major-mode 'shell-mode)
-;;   (setq mode-name "Shell")
-;;   (use-local-map shell-mode-map)
-;;   (make-local-variable 'shell-directory-stack)
-;;   (setq shell-directory-stack nil)
-;;   (add-hook 'term-input-filter-functions 'shell-directory-tracker)
-;;   (run-mode-hooks 'shell-mode-hook))
+;; (defvar shell-mode-map
+;;   (let ((map (make-sparse-keymap)))
+;;     (define-key map "\C-c\C-f" 'shell-forward-command)
+;;     (define-key map "\C-c\C-b" 'shell-backward-command)
+;;     (define-key map "\t" 'term-dynamic-complete)
+;;     (define-key map "\M-?"
+;;       'term-dynamic-list-filename-completions)))
 ;;
+;; (define-derived-mode shell-mode term-mode "Shell"
+;;   "A shell mode."
+;;   (setq-local term-prompt-regexp shell-prompt-pattern)
+;;   (setq-local shell-directory-stack nil)
+;;   (add-hook 'term-input-filter-functions #'shell-directory-tracker nil t))
 ;;
 ;; Completion for term-mode users
 ;;