X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/d607b96bc2824116a8fe0e5840ce49da7ce4514f..fc0c5af8380cdbfa64fd082a65461e3cc20737b0:/lisp/format.el

diff --git a/lisp/format.el b/lisp/format.el
index 0436187d98..221eaadcdd 100644
--- a/lisp/format.el
+++ b/lisp/format.el
@@ -1,7 +1,7 @@
 ;;; format.el --- read and save files in multiple formats
 
-;; Copyright (C) 1994, 1995, 1997, 1999, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1994-1995, 1997, 1999, 2001-2013 Free Software
+;; Foundation, Inc.
 
 ;; Author: Boris Goldowsky <boris@gnu.org>
 ;; Package: emacs
@@ -90,7 +90,7 @@
 	   ,(purecopy "diac") iso-iso2duden t nil)
     (de646 ,(purecopy "German ASCII (ISO 646)")
 	   nil
-	   ,(purecopy "recode -f iso646-ge:latin1") 
+	   ,(purecopy "recode -f iso646-ge:latin1")
 	   ,(purecopy "recode -f latin1:iso646-ge") t nil)
     (denet ,(purecopy "net German")
 	   nil
@@ -167,10 +167,10 @@ BUFFER should be the buffer that the output originally came from."
 	  (error "Format encoding failed")))
     (funcall method from to buffer)))
 
-(defun format-decode-run-method (method from to &optional buffer)
+(defun format-decode-run-method (method from to &optional _buffer)
   "Decode using METHOD the text from FROM to TO.
 If METHOD is a string, it is a shell command (including options); otherwise,
-it should be a Lisp function.  Decoding is done for the given BUFFER."
+it should be a Lisp function.  BUFFER is currently ignored."
   (if (stringp method)
       (let ((error-buff (get-buffer-create "*Format Errors*"))
 	    (coding-system-for-write 'no-conversion)
@@ -181,8 +181,7 @@ it should be a Lisp function.  Decoding is done for the given BUFFER."
 	;; We should perhaps go via a temporary buffer and copy it
 	;; back, in case of errors.
 	(if (and (zerop (save-window-excursion
-			  (shell-command-on-region (point-min) (point-max)
-						   method t t
+			  (shell-command-on-region from to method t t
 						   error-buff)))
 		 ;; gzip gives zero exit status with bad args, for instance.
 		 (zerop (with-current-buffer error-buff
@@ -357,13 +356,11 @@ one of the formats defined in `format-alist', or a list of such symbols."
   (if (symbolp format) (setq format (list format)))
   (save-excursion
     (goto-char end)
-    (let ((cur-buf (current-buffer))
-	  (end (point-marker)))
+    (let ((end (point-marker)))
       (while format
 	(let* ((info (assq (car format) format-alist))
 	       (to-fn  (nth 4 info))
-	       (modify (nth 5 info))
-	       result)
+	       (modify (nth 5 info)))
 	  (if to-fn
 	      (if modify
 		  (setq end (format-encode-run-method to-fn beg end
@@ -540,22 +537,6 @@ Compare using `equal'."
 	(setq tail next)))
     (cons acopy bcopy)))
 
-(defun format-common-tail (a b)
-  "Given two lists that have a common tail, return it.
-Compare with `equal', and return the part of A that is equal to the
-equivalent part of B.  If even the last items of the two are not equal,
-return nil."
-  (let ((la (length a))
-	(lb (length b)))
-    ;; Make sure they are the same length
-    (if (> la lb)
-	(setq a (nthcdr (- la lb) a))
-      (setq b (nthcdr (- lb la) b))))
-  (while (not (equal a b))
-    (setq a (cdr a)
-	  b (cdr b)))
-  a)
-
 (defun format-proper-list-p (list)
   "Return t if LIST is a proper list.
 A proper list is a list ending with a nil cdr, not with an atom "
@@ -642,7 +623,7 @@ to write these unknown annotations back into the file."
     (save-restriction
       (narrow-to-region (point-min) to)
       (goto-char from)
-      (let (next open-ans todo loc unknown-ans)
+      (let (next open-ans todo unknown-ans)
 	(while (setq next (funcall next-fn))
 	  (let* ((loc      (nth 0 next))
 		 (end      (nth 1 next))
@@ -933,12 +914,11 @@ The same TRANSLATIONS structure can be used in reverse for reading files."
 		  all-ans))
 	  (setq neg-ans (cdr neg-ans)))
 	;; Now deal with positive (opening) annotations
-	(let ((p pos-ans))
-	  (while pos-ans
-	    (push (car pos-ans) open-ans)
-	    (push (cons loc (funcall format-fn (car pos-ans) t))
-		  all-ans)
-	    (setq pos-ans (cdr pos-ans))))))
+        (while pos-ans
+          (push (car pos-ans) open-ans)
+          (push (cons loc (funcall format-fn (car pos-ans) t))
+                all-ans)
+          (setq pos-ans (cdr pos-ans)))))
 
     ;; Close any annotations still open
     (while open-ans
@@ -1017,8 +997,7 @@ They can be whatever the FORMAT-FN in `format-annotate-region'
 can handle.  If that is `enriched-make-annotation', they can be
 either strings, or lists of the form (PARAMETER VALUE)."
 
-  (let ((prop-alist (cdr (assoc prop translations)))
-	default)
+  (let ((prop-alist (cdr (assoc prop translations))))
     (if (not prop-alist)
 	nil
       ;; If either old or new is a list, have to treat both that way.
@@ -1029,7 +1008,6 @@ either strings, or lists of the form (PARAMETER VALUE)."
 	      (format-annotate-atomic-property-change prop-alist old new)
 	    (let* ((old (if (listp old) old (list old)))
 		   (new (if (listp new) new (list new)))
-		   (tail (format-common-tail old new))
 		   close open)
 	      (while old
 		(setq close
@@ -1088,5 +1066,4 @@ OLD and NEW are the values."
 
 (provide 'format)
 
-;; arch-tag: c387e9c7-a93d-47bf-89bc-8ca67e96755a
 ;;; format.el ends here