[Emacs-diffs] trunk r114567: * lisp/vc/pcvs.el: Use lexical-binding.

[Stefan Monnier]

------------------------------------------------------------
revno: 114567
revision-id: address@hidden
parent: address@hidden
committer: Stefan Monnier <address@hidden>
branch nick: trunk
timestamp: Mon 2013-10-07 23:47:24 -0400
message:
  * lisp/vc/pcvs.el: Use lexical-binding.
  (cvs-temp-buffer, cvs-make-cvs-buffer): Pass some vars in the lexical
  environment of `eval'.
  (cvs-mode-run, cvs-mode-do): Change `postproc' to be a function rather
  than a list of expressions.  Adjust callers.
  * lisp/vc/pcvs-defs.el (cvs-postprocess): Remove, unused.
modified:
  lisp/ChangeLog                 changelog-20091113204419-o5vbwnq5f7feedwu-1432
  lisp/vc/pcvs-defs.el           
pcvsdefs.el-20091113204419-o5vbwnq5f7feedwu-1778
  lisp/vc/pcvs.el                pcvs.el-20091113204419-o5vbwnq5f7feedwu-1782

=== modified file 'lisp/ChangeLog'
--- a/lisp/ChangeLog    2013-10-07 23:01:23 +0000
+++ b/lisp/ChangeLog    2013-10-08 03:47:24 +0000
@@ -1,8 +1,16 @@
+2013-10-08  Stefan Monnier  <address@hidden>
+
+       * vc/pcvs.el: Use lexical-binding.
+       (cvs-temp-buffer, cvs-make-cvs-buffer): Pass some vars in the lexical
+       environment of `eval'.
+       (cvs-mode-run, cvs-mode-do): Change `postproc' to be a function rather
+       than a list of expressions.  Adjust callers.
+       * vc/pcvs-defs.el (cvs-postprocess): Remove, unused.
+
 2013-10-07  Dmitry Gutov  <address@hidden>
 
        * progmodes/ruby-mode.el (ruby-smie--implicit-semi-p): Handle the
-       case of the dot in a chained method call being on the following
-       line.
+       case of the dot in a chained method call being on the following line.
 
 2013-10-07  Stefan Monnier  <address@hidden>
 

=== modified file 'lisp/vc/pcvs-defs.el'
--- a/lisp/vc/pcvs-defs.el      2013-01-01 09:11:05 +0000
+++ b/lisp/vc/pcvs-defs.el      2013-10-08 03:47:24 +0000
@@ -245,13 +245,6 @@
 
 
 ;;;;
-;;;; Internal variables, used in the process buffer.
-;;;;
-
-(defvar cvs-postprocess nil
-  "(Buffer local) what to do once the process exits.")
-
-;;;;
 ;;;; Internal variables for the *cvs* buffer.
 ;;;;
 

=== modified file 'lisp/vc/pcvs.el'
--- a/lisp/vc/pcvs.el   2013-09-20 05:39:53 +0000
+++ b/lisp/vc/pcvs.el   2013-10-08 03:47:24 +0000
@@ -1,4 +1,4 @@
-;;; pcvs.el --- a front-end to CVS
+;;; pcvs.el --- a front-end to CVS  -*- lexical-binding:t -*-
 
 ;; Copyright (C) 1991-2013 Free Software Foundation, Inc.
 
@@ -349,7 +349,7 @@
 from the current buffer."
   (let* ((cvs-buf (current-buffer))
         (info (cdr (assoc cmd cvs-buffer-name-alist)))
-        (name (eval (nth 0 info)))
+        (name (eval (nth 0 info) `((cmd . ,cmd))))
         (mode (nth 1 info))
         (dir default-directory)
         (buf (cond
@@ -359,9 +359,10 @@
               (t
                (set (make-local-variable 'cvs-temp-buffer)
                     (cvs-get-buffer-create
-                     (eval cvs-temp-buffer-name) 'noreuse))))))
+                     (eval cvs-temp-buffer-name `((dir . ,dir)))
+                      'noreuse))))))
 
-    ;; handle the potential pre-existing process
+    ;; Handle the potential pre-existing process.
     (let ((proc (get-buffer-process buf)))
       (when (and (not normal) (processp proc)
                 (memq (process-status proc) '(run stop)))
@@ -416,7 +417,7 @@
 If non-nil, NEW means to create a new buffer no matter what."
   ;; the real cvs-buffer creation
   (setq dir (cvs-expand-dir-name dir))
-  (let* ((buffer-name (eval cvs-buffer-name))
+  (let* ((buffer-name (eval cvs-buffer-name `((dir . ,dir))))
         (buffer
          (or (and (not new)
                   (eq cvs-reuse-cvs-buffer 'current)
@@ -569,9 +570,9 @@
           process 'cvs-postprocess
           (if (null rest)
               ;; this is the last invocation
-              postprocess
+               postprocess
             ;; else, we have to register ourselves to be rerun on the rest
-            `(cvs-run-process ',args ',rest ',postprocess ',single-dir)))
+            (lambda () (cvs-run-process args rest postprocess single-dir))))
          (set-process-sentinel process 'cvs-sentinel)
          (set-process-filter process 'cvs-update-filter)
          (set-marker (process-mark process) (point-max))
@@ -675,7 +676,8 @@
                (error "cvs' process buffer was killed")
              (with-current-buffer procbuf
                ;; Do the postprocessing like parsing and such.
-               (save-excursion (eval cvs-postproc)))))))
+               (save-excursion
+                  (funcall cvs-postproc)))))))
       ;; Check whether something is left.
       (when (and procbuf (not (get-buffer-process procbuf)))
         (with-current-buffer procbuf
@@ -755,7 +757,8 @@
 - NOARGS will get all the arguments from the *cvs* buffer and will
   always behave as if called interactively.
 - DOUBLE is the generic case."
-  (declare (debug (&define sexp lambda-list stringp ("interactive" 
interactive) def-body))
+  (declare (debug (&define sexp lambda-list stringp
+                           ("interactive" interactive) def-body))
           (doc-string 3))
   (let ((style (cvs-cdr fun))
        (fun (cvs-car fun)))
@@ -1465,7 +1468,7 @@
     (set (make-local-variable 'cvs-minor-wrap-function) 'cvs-commit-minor-wrap)
     (run-hooks 'cvs-mode-commit-hook)))
 
-(defun cvs-commit-minor-wrap (buf f)
+(defun cvs-commit-minor-wrap (_buf f)
   (let ((cvs-ignore-marks-modif (cvs-mode-mark-get-modif "commit")))
     (funcall f)))
 
@@ -1598,24 +1601,25 @@
   (interactive (list (cvs-flags-query 'cvs-add-flags "cvs add flags")))
   (let ((fis (cvs-mode-marked 'add))
        (needdesc nil) (dirs nil))
-    ;; find directories and look for fis needing a description
+    ;; Find directories and look for fis needing a description.
     (dolist (fi fis)
       (cond
        ((file-directory-p (cvs-fileinfo->full-name fi)) (push fi dirs))
        ((eq (cvs-fileinfo->type fi) 'UNKNOWN) (setq needdesc t))))
-    ;; prompt for description if necessary
+    ;; Prompt for description if necessary.
     (let* ((msg (if (and needdesc
                         (or current-prefix-arg (not cvs-add-default-message)))
                    (read-from-minibuffer "Enter description: ")
                  (or cvs-add-default-message "")))
           (flags `("-m" ,msg ,@flags))
           (postproc
-           ;; setup postprocessing for the directory entries
+           ;; Setup postprocessing for the directory entries.
            (when dirs
-             `((cvs-run-process (list "-n" "update")
-                                ',dirs
-                                '(cvs-parse-process t))
-               (cvs-mark-fis-dead ',dirs)))))
+              (lambda ()
+                (cvs-run-process (list "-n" "update")
+                                dirs
+                                (lambda () (cvs-parse-process t)))
+               (cvs-mark-fis-dead dirs)))))
       (cvs-mode-run "add" flags fis :postproc postproc))))
 
 (defun-cvs-mode (cvs-mode-diff . DOUBLE) (flags)
@@ -1666,10 +1670,7 @@
         (fis (car (cvs-partition 'cvs-fileinfo->backup-file marked))))
     (unless (consp fis)
       (error "No files with a backup file selected!"))
-    ;; let's extract some info into the environment for `buffer-name'
-    (let* ((dir (cvs-fileinfo->dir (car fis)))
-          (file (cvs-fileinfo->file (car fis))))
-      (set-buffer (cvs-temp-buffer "diff")))
+    (set-buffer (cvs-temp-buffer "diff"))
     (message "cvs diff backup...")
     (cvs-execute-single-file-list fis 'cvs-diff-backup-extractor
                                  cvs-diff-program flags))
@@ -1851,15 +1852,16 @@
       ret)))
 
 (cl-defun cvs-mode-run (cmd flags fis
-                     &key (buf (cvs-temp-buffer))
-                          dont-change-disc cvsargs postproc)
+                        &key (buf (cvs-temp-buffer))
+                             dont-change-disc cvsargs postproc)
   "Generic cvs-mode-<foo> function.
 Executes `cvs CVSARGS CMD FLAGS FIS'.
 BUF is the buffer to be used for cvs' output.
 DONT-CHANGE-DISC non-nil indicates that the command will not change the
   contents of files.  This is only used by the parser.
-POSTPROC is a list of expressions to be evaluated at the very end (after
-  parsing if applicable).  It will be prepended with `progn' if necessary."
+POSTPROC is a function of no argument to be evaluated at the very end (after
+  parsing if applicable)."
+  (unless postproc (setq postproc #'ignore))
   (let ((def-dir default-directory))
     ;; Save the relevant buffers
     (save-some-buffers nil (lambda () (cvs-is-within-p fis def-dir))))
@@ -1878,14 +1880,17 @@
     (cvs-cleanup-collection cvs-cookies ;cleanup remaining messages
                            (eq cvs-auto-remove-handled 'delayed) nil t)
     (when (fboundp after-mode)
-      (setq postproc (append postproc `((,after-mode)))))
+      (setq postproc (let ((pp postproc))
+                       (lambda () (funcall pp) (funcall after-mode)))))
     (when parse
       (let ((old-fis
             (when (member cmd '("status" "update"))    ;FIXME: Yuck!!
                ;; absence of `cvs update' output has a specific meaning.
-               (or fis (list (cvs-create-fileinfo 'DIRCHANGE "" "." ""))))))
-       (push `(cvs-parse-process ',dont-change-disc nil ',old-fis) postproc)))
-    (setq postproc (if (cdr postproc) (cons 'progn postproc) (car postproc)))
+               (or fis (list (cvs-create-fileinfo 'DIRCHANGE "" "." "")))))
+            (pp postproc))
+        (setq postproc (lambda ()
+                         (cvs-parse-process dont-change-disc nil old-fis)
+                         (funcall pp)))))
     (with-current-buffer buf
       (let ((inhibit-read-only t)) (erase-buffer))
       (message "Running cvs %s ..." cmd)
@@ -1893,7 +1898,7 @@
 
 
 (cl-defun cvs-mode-do (cmd flags filter
-                    &key show dont-change-disc cvsargs postproc)
+                      &key show dont-change-disc cvsargs postproc)
   "Generic cvs-mode-<foo> function.
 Executes `cvs CVSARGS CMD FLAGS' on the selected files.
 FILTER is passed to `cvs-applicable-p' to only apply the command to
@@ -1915,8 +1920,9 @@
   (interactive (list (cvs-flags-query 'cvs-status-flags "cvs status flags")))
   (cvs-mode-do "status" flags nil :dont-change-disc t :show t
               :postproc (when (eq cvs-auto-remove-handled 'status)
-                          `((with-current-buffer ,(current-buffer)
-                              (cvs-mode-remove-handled))))))
+                           (let ((buf (current-buffer)))
+                             (lambda () (with-current-buffer buf
+                                     (cvs-mode-remove-handled)))))))
 
 (defun-cvs-mode (cvs-mode-tree . SIMPLE) (flags)
   "Call cvstree using the file under the point as a keyfile."
@@ -1924,7 +1930,7 @@
   (cvs-mode-run "status" (cons "-v" flags) (cvs-mode-marked nil "status")
                :buf (cvs-temp-buffer "tree")
                :dont-change-disc t
-               :postproc '((cvs-status-cvstrees))))
+               :postproc #'cvs-status-cvstrees))
 
 ;; cvs log
 
@@ -1958,7 +1964,7 @@
   (cvs-mode-do "update" flags nil :cvsargs '("-n") :dont-change-disc t))
 
 
-(defun-cvs-mode cvs-mode-ignore (&optional pattern)
+(defun-cvs-mode cvs-mode-ignore ()
   "Arrange so that CVS ignores the selected files.
 This command ignores files that are not flagged as `Unknown'."
   (interactive)
@@ -2065,8 +2071,10 @@
        (cvs-mode-run "update" flags fis-other
                      :postproc
                      (when fis-removed
-                       `((with-current-buffer ,(current-buffer)
-                           (cvs-mode-run "add" nil ',fis-removed)))))))))
+                        (let ((buf (current-buffer)))
+                          (lambda ()
+                            (with-current-buffer buf
+                              (cvs-mode-run "add" nil fis-removed))))))))))
 
 
 (defun-cvs-mode (cvs-mode-revert-to-rev . NOARGS) (rev)
@@ -2077,11 +2085,14 @@
               (cvs-flags-query 'cvs-idiff-version)))))
   (let* ((fis (cvs-mode-marked 'revert "revert" :file t))
         (tag (concat "tmp_pcl_tag_" (make-temp-name "")))
-        (untag `((with-current-buffer ,(current-buffer)
-                   (cvs-mode-run "tag" (list "-d" ',tag) ',fis))))
-        (update `((with-current-buffer ,(current-buffer)
-                    (cvs-mode-run "update" (list "-j" ',tag "-j" ',rev) ',fis
-                                  :postproc ',untag)))))
+         (buf (current-buffer))
+        (untag (lambda ()
+                  (with-current-buffer buf
+                   (cvs-mode-run "tag" (list "-d" tag) fis))))
+        (update (lambda ()
+                   (with-current-buffer buf
+                    (cvs-mode-run "update" (list "-j" tag "-j" rev) fis
+                                  :postproc untag)))))
     (cvs-mode-run "tag" (list tag) fis :postproc update)))
 
 
@@ -2185,7 +2196,8 @@
 With prefix argument, prompt for cvs flags."
   (interactive
    (list (setq cvs-tag-name
-              (cvs-query-read cvs-tag-name "Tag to delete: " 
cvs-qtypedesc-tag))
+              (cvs-query-read cvs-tag-name "Tag to delete: "
+                               cvs-qtypedesc-tag))
         (cvs-flags-query 'cvs-tag-flags "tag flags")))
   (cvs-mode-do "tag" (append '("-d") flags (list tag))
               (when cvs-force-dir-tag 'tag)))
@@ -2203,6 +2215,7 @@
          (byte-compile-file filename))))))
 
 ;; ChangeLog support.
+(defvar add-log-buffer-file-name-function)
 
 (defun-cvs-mode cvs-mode-add-change-log-entry-other-window ()
   "Add a ChangeLog entry in the ChangeLog of the current directory."