Eliminate an unuted function argument.

* vc.el, all backends: API simplification: Remove 4th 'default-state'
argument from vc-dir-status files and its backend methods - no backend
method ever set it.  It was used only in the fallback method to to set
a default of 'up-to-date, though a convoluted call chain obscured
this.

9 files changed, 26 insertions, 18 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 6ffdd0adc0..8226b3d3c3 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,11 @@
 2014-12-02  Eric S. Raymond  <esr@snark.thyrsus.com>
 
+	* vc.el, all backends: API simplification: Remove 4th
+	'default-state' argument from vc-dir-status files and its backend
+	methods - no backend method ever set it.  It was used only in the
+	fallback method to to set a default of 'up-to-date, though a
+	convoluted call chain obscured this.
+
 	* vc-hooks.el: Bind vc-delete-file to Ctrl-x v delete.
 
 	* vc.el (vc-expand-dirs): Now takes a second BACKEND argument,
@@ -21,7 +27,7 @@
 	global.
 
 	* vc-bzr.el: Restore vc-bzr-state-heuristic as a private method.
-	VC randomly/unpredictable fails without it; cause not yet established.
+	VC randomly/unpredictably fails without it; cause not yet established.
 
 2014-12-01  Stefan Monnier  <monnier@iro.umontreal.ca>
 
diff --git a/lisp/vc/vc-bzr.el b/lisp/vc/vc-bzr.el
index de6ae21dbf..a534a1ced3 100644
--- a/lisp/vc/vc-bzr.el
+++ b/lisp/vc/vc-bzr.el
@@ -981,7 +981,7 @@ stream.  Standard error output is discarded."
                             ;; frob the results accordingly.
                             (file-relative-name dir (vc-bzr-root dir)))))
 
-(defun vc-bzr-dir-status-files (dir files _default-state update-function)
+(defun vc-bzr-dir-status-files (dir files update-function)
   "Return a list of conses (file . state) for DIR."
   (apply 'vc-bzr-command "status" (current-buffer) 'async dir "-v" "-S" files)
   (vc-run-delayed
diff --git a/lisp/vc/vc-cvs.el b/lisp/vc/vc-cvs.el
index 41c5326146..b07a05c658 100644
--- a/lisp/vc/vc-cvs.el
+++ b/lisp/vc/vc-cvs.el
@@ -1084,7 +1084,7 @@ state."
       (vc-run-delayed
        (vc-cvs-after-dir-status update-function)))))
 
-(defun vc-cvs-dir-status-files (dir files _default-state update-function)
+(defun vc-cvs-dir-status-files (dir files update-function)
   "Create a list of conses (file . state) for DIR."
   (apply 'vc-cvs-command (current-buffer) 'async dir "-f" "status" files)
   (vc-run-delayed
diff --git a/lisp/vc/vc-dir.el b/lisp/vc/vc-dir.el
index a26287aa0f..d97b9cd6a6 100644
--- a/lisp/vc/vc-dir.el
+++ b/lisp/vc/vc-dir.el
@@ -1014,8 +1014,8 @@ specific headers."
    (vc-call-backend backend 'dir-extra-headers dir)
    "\n"))
 
-(defun vc-dir-refresh-files (files default-state)
-  "Refresh some files in the *VC-dir* buffer."
+(defun vc-dir-refresh-files (files)
+  "Refresh some fies in the *VC-dir* buffer."
   (let ((def-dir default-directory)
 	(backend vc-dir-backend))
     (vc-set-mode-line-busy-indicator)
@@ -1032,7 +1032,7 @@ specific headers."
         (setq default-directory def-dir)
         (erase-buffer)
         (vc-call-backend
-         backend 'dir-status-files def-dir files default-state
+         backend 'dir-status-files def-dir files
          (lambda (entries &optional more-to-come)
            ;; ENTRIES is a list of (FILE VC_STATE EXTRA) items.
            ;; If MORE-TO-COME is true, then more updates will come from
@@ -1110,8 +1110,7 @@ Throw an error if another update process is in progress."
                          vc-ewoc 'vc-dir-fileinfo->needs-update)))
                    (if remaining
                        (vc-dir-refresh-files
-                        (mapcar 'vc-dir-fileinfo->name remaining)
-                        'up-to-date)
+                        (mapcar 'vc-dir-fileinfo->name remaining))
                      (setq mode-line-process nil))))))))))))
 
 (defun vc-dir-show-fileentry (file)
diff --git a/lisp/vc/vc-git.el b/lisp/vc/vc-git.el
index 3538f2c382..fad834bcee 100644
--- a/lisp/vc/vc-git.el
+++ b/lisp/vc/vc-git.el
@@ -51,7 +51,7 @@
 ;; * registered (file)                             OK
 ;; * state (file)                                  OK
 ;; * dir-status (dir update-function)              OK
-;; - dir-status-files (dir files ds uf)            NOT NEEDED
+;; - dir-status-files (dir files uf)               NOT NEEDED
 ;; * working-revision (file)                       OK
 ;; - latest-on-branch-p (file)                     NOT NEEDED
 ;; * checkout-model (files)                        OK
@@ -481,7 +481,7 @@ or an empty string if none."
   ;; - how to support vc-dir on a subdir of the project tree
   (vc-git-dir-status-goto-stage 'update-index nil update-function))
 
-(defun vc-git-dir-status-files (_dir files _default-state update-function)
+(defun vc-git-dir-status-files (_dir files update-function)
   "Return a list of (FILE STATE EXTRA) entries for FILES in DIR."
   (vc-git-dir-status-goto-stage 'update-index files update-function))
 
diff --git a/lisp/vc/vc-hg.el b/lisp/vc/vc-hg.el
index 35f5354da6..bfd1447aa3 100644
--- a/lisp/vc/vc-hg.el
+++ b/lisp/vc/vc-hg.el
@@ -44,7 +44,7 @@
 ;; * registered (file)                         OK
 ;; * state (file)                              OK
 ;; - dir-status (dir update-function)          OK
-;; - dir-status-files (dir files ds uf)        OK
+;; - dir-status-files (dir files uf)           OK
 ;; - dir-extra-headers (dir)                   OK
 ;; - dir-printer (fileinfo)                    OK
 ;; * working-revision (file)                   OK
@@ -618,7 +618,7 @@ REV is the revision to check out into WORKFILE."
   (vc-run-delayed
    (vc-hg-after-dir-status update-function)))
 
-(defun vc-hg-dir-status-files (dir files _default-state update-function)
+(defun vc-hg-dir-status-files (dir files update-function)
   (apply 'vc-hg-command (current-buffer) 'async dir "status" "-mardui" "-C" files)
   (vc-run-delayed
    (vc-hg-after-dir-status update-function)))
diff --git a/lisp/vc/vc-src.el b/lisp/vc/vc-src.el
index 9e17d058a9..a2ebeef22b 100644
--- a/lisp/vc/vc-src.el
+++ b/lisp/vc/vc-src.el
@@ -32,7 +32,7 @@
 ;; * registered (file)                         OK
 ;; * state (file)                              OK
 ;; * dir-status (dir update-function)          OK
-;; - dir-status-files (dir files ds uf)        ??
+;; - dir-status-files (dir files uf)           ??
 ;; - dir-extra-headers (dir)                   NOT NEEDED
 ;; - dir-printer (fileinfo)                    ??
 ;; * working-revision (file)                   OK
diff --git a/lisp/vc/vc-svn.el b/lisp/vc/vc-svn.el
index 55b8f111e0..8ca8a0978e 100644
--- a/lisp/vc/vc-svn.el
+++ b/lisp/vc/vc-svn.el
@@ -206,7 +206,7 @@ RESULT is a list of conses (FILE . STATE) for directory DIR."
     (vc-svn-command (current-buffer) 'async nil "status" "-u")
   (vc-run-delayed (vc-svn-after-dir-status callback)))
 
-(defun vc-svn-dir-status-files (_dir files _default-state callback)
+(defun vc-svn-dir-status-files (_dir files callback)
   (apply 'vc-svn-command (current-buffer) 'async nil "status" files)
   (vc-run-delayed
    (vc-svn-after-dir-status callback)))
diff --git a/lisp/vc/vc.el b/lisp/vc/vc.el
index 1b82bfd939..c4810cf8b8 100644
--- a/lisp/vc/vc.el
+++ b/lisp/vc/vc.el
@@ -148,13 +148,13 @@
 ;;   the following functions might be needed: `dir-extra-headers',
 ;;   `dir-printer', `extra-dir-menu' and `dir-status-files'.
 ;;
-;; - dir-status-files (dir files default-state update-function)
+;; - dir-status-files (dir files update-function)
 ;;
 ;;   This function is identical to dir-status except that it should
 ;;   only report status for the specified FILES. Also it needs to
 ;;   report on all requested files, including up-to-date or ignored
 ;;   files. If not provided, the default is to consider that the files
-;;   are in DEFAULT-STATE.
+;;   are in 'up-to-date state.
 ;;
 ;; - dir-extra-headers (dir)
 ;;
@@ -577,6 +577,9 @@
 ;;   (This fixes a layer violation that produced bad behavior under
 ;;   SVN.)
 ;;
+;; - INCOMPATIBLE CHANGE: The old fourth 'default-state' argument of
+;;   vc-dir-status-files is gone; none of the back ends actually used it.
+;;
 ;; - vc-state-heuristic is no longer a public method (the CVS backend
 ;;   retains it as a private one).
 ;;
@@ -2884,9 +2887,9 @@ to provide the `find-revision' operation instead."
 (defalias 'vc-default-revision-completion-table 'ignore)
 (defalias 'vc-default-mark-resolved 'ignore)
 
-(defun vc-default-dir-status-files (_backend _dir files default-state update-function)
+(defun vc-default-dir-status-files (_backend _dir files update-function)
   (funcall update-function
-           (mapcar (lambda (file) (list file default-state)) files)))
+           (mapcar (lambda (file) (list file 'up-to-date)) files)))
 
 (defun vc-check-headers ()
   "Check if the current file has any headers in it."