Fix bugs wrt invisibility handline.

* org-compat.el (org-move-to-column): Always ignore invisible
text in agenda buffer, and when there is both a bracket link
and '(org-link) as a member of `buffer-invisibility-spec'.
Add a docstring.

* org.el (org-align-tags-here): Add docstring and remove
useless arguments when calling `org-move-to-column'.

* org-table.el (org-table-copy-down)
(org-table-find-dataline, org-table-move-row)
(org-table-insert-hline, org-table-kill-row):
* org-agenda.el (org-agenda-next-item)
(org-agenda-previous-item, org-agenda-todo)
(org-agenda-priority, org-agenda-show-new-time)
(org-agenda-clock-in, org-agenda-clock-out): Remove useless
arguments when calling `org-move-to-column'.

This fixes the issue about S-RET not placing the cursor in the right
table field when M-x org-toggle-link-display RET removed '(org-link)
from `buffer-invisibility-spec' and some other discrepancies (like
S-M-<up> not restoring point correctly when there is a bracket link
before point, or M-x org-clock-display RET not aligning overlays
correctly, etc.

Thanks to Matt Lundin and Michael Brand for tracking issues
about this.

lisp/org-agenda.el

@@ -8275,7 +8275,7 @@ When called with a prefix argument, include all archive files as well."
       (when (next-single-property-change (point-at-eol) 'org-marker)
 	(move-end-of-line 1)
 	(goto-char (next-single-property-change (point) 'org-marker))))
-    (org-move-to-column col nil nil t))
+    (org-move-to-column col))
   (org-agenda-do-context-action))
 
 (defun org-agenda-previous-item (n)
@@ -8287,7 +8287,7 @@ When called with a prefix argument, include all archive files as well."
 		  (move-end-of-line 0)
 		  (previous-single-property-change (point) 'org-marker))))
       (if goto (goto-char goto))
-      (org-move-to-column col nil nil t)))
+      (org-move-to-column col)))
   (org-agenda-do-context-action))
 
 (defun org-agenda-do-context-action ()
@@ -8798,7 +8798,7 @@ the same tree node, and the headline of the tree node in the Org-mode file."
       	(string-match (concat "^" (regexp-opt org-done-keywords-for-agenda))
 		      newhead)
 	(org-agenda-unmark-clocking-task))
-      (org-move-to-column col nil nil t))))
+      (org-move-to-column col))))
 
 (defun org-agenda-add-note (&optional arg)
   "Add a time-stamped note to the entry at point."
@@ -8954,7 +8954,7 @@ Called with a universal prefix arg, show the priority instead of setting it."
 	  (end-of-line 1)
 	  (setq newhead (org-get-heading)))
 	(org-agenda-change-all-lines newhead hdmarker)
-	(org-move-to-column col nil nil t)))))
+	(org-move-to-column col)))))
 
 ;; FIXME: should fix the tags property of the agenda line.
 (defun org-agenda-set-tags (&optional tag onoff)
@@ -9163,7 +9163,7 @@ Called with a universal prefix arg, show the priority instead of setting it."
       (goto-char (point-max))
       (while (not (bobp))
 	(when (equal marker (org-get-at-bol 'org-marker))
-	  (org-move-to-column (- (window-width) (length stamp)) t nil t)
+	  (org-move-to-column (- (window-width) (length stamp)) t)
 	  (org-agenda-fix-tags-filter-overlays-at (point))
           (if (featurep 'xemacs)
 	      ;; Use `duplicable' property to trigger undo recording
@@ -9265,7 +9265,7 @@ ARG is passed through to `org-deadline'."
 	  (org-clock-in arg)
 	  (setq newhead (org-get-heading)))
 	(org-agenda-change-all-lines newhead hdmarker))
-      (org-move-to-column col nil nil t))))
+      (org-move-to-column col))))
 
 (defun org-agenda-clock-out ()
   "Stop the currently running clock."
@@ -9285,7 +9285,7 @@ ARG is passed through to `org-deadline'."
 	    (setq newhead (org-get-heading))))))
     (org-agenda-change-all-lines newhead marker)
     (move-marker marker nil)
-    (org-move-to-column col nil nil t)
+    (org-move-to-column col)
     (org-agenda-unmark-clocking-task)))
 
 (defun org-agenda-clock-cancel (&optional arg)

lisp/org-compat.el

@@ -343,10 +343,25 @@ Works on both Emacs and XEmacs."
       (org-xemacs-without-invisibility (indent-line-to column))
     (indent-line-to column)))
 
-(defun org-move-to-column (column &optional force buffer ignore-invisible)
+(defun org-move-to-column (column &optional force buffer)
-  (let ((buffer-invisibility-spec ignore-invisible))
+  "Move to column COLUMN.
+Pass COLUMN and FORCE to `move-to-column'.
+Pass BUFFER to the XEmacs version of `move-to-column'."
+  (let ((buffer-invisibility-spec
+	 (if (or
+	      ;; Ignore all visibility spec in agenda
+	      (not (derived-mode-p 'org-mode))
+	      ;; Ignore bracket links elsewere
+	      (and (save-excursion
+		     (forward-line 0)
+		     (looking-at (concat "^.*" org-bracket-link-regexp)))
+		   (member '(org-link)
+			   buffer-invisibility-spec)))
+	     t
+	   buffer-invisibility-spec)))
     (if (featurep 'xemacs)
-	(org-xemacs-without-invisibility (move-to-column column force buffer))
+	(org-xemacs-without-invisibility
+	 (move-to-column column force buffer))
       (move-to-column column force))))
 
 (defun org-get-x-clipboard-compat (value)

lisp/org-table.el

@@ -1136,12 +1136,12 @@ copying.  In the case of a timestamp, increment by one day."
 		   (< (string-to-number txt) 100000000))
 	      (setq txt (format "%d" (+ (string-to-number txt) 1))))
 	  (insert txt)
-	  (org-move-to-column col nil nil t)
+	  (org-move-to-column col)
 	  (if (and org-table-copy-increment (org-at-timestamp-p t))
 	      (org-timestamp-up-day)
 	    (org-table-maybe-recalculate-line))
 	  (org-table-align)
-	  (org-move-to-column col nil nil t))
+	  (org-move-to-column col))
       (user-error "No non-empty field found"))))
 
 (defun org-table-check-inside-data-field (&optional noerror)
@@ -1370,12 +1370,12 @@ However, when FORCE is non-nil, create new columns if necessary."
       t
     (let ((col (current-column))
 	  (end (org-table-end)))
-      (org-move-to-column col nil nil t)
+      (org-move-to-column col)
       (while (and (< (point) end)
 		  (or (not (= (current-column) col))
 		      (org-at-table-hline-p)))
 	(beginning-of-line 2)
-	(org-move-to-column col nil nil t))
+	(org-move-to-column col))
       (if (and (org-at-table-p)
 	       (not (org-at-table-hline-p)))
 	  t
@@ -1524,7 +1524,7 @@ first dline below it is used.  When ABOVE is non-nil, the one above is used."
     (beginning-of-line tonew)
     (insert txt)
     (beginning-of-line 0)
-    (org-move-to-column col nil nil t)
+    (org-move-to-column col)
     (unless (or hline1p hline2p
 		(not (or (not org-table-fix-formulas-confirm)
 			 (funcall org-table-fix-formulas-confirm
@@ -1576,7 +1576,7 @@ With prefix ABOVE, insert above the current line."
     (beginning-of-line (if above 1 2))
     (insert line "\n")
     (beginning-of-line (if above 1 -1))
-    (org-move-to-column col nil nil t)
+    (org-move-to-column col)
     (and org-table-overlay-coordinates (org-table-align))))
 
 ;;;###autoload
@@ -1616,7 +1616,7 @@ In particular, this does handle wide and invisible characters."
 	(dline (org-table-current-dline)))
     (kill-region (point-at-bol) (min (1+ (point-at-eol)) (point-max)))
     (if (not (org-at-table-p)) (beginning-of-line 0))
-    (org-move-to-column col nil nil t)
+    (org-move-to-column col)
     (when (or (not org-table-fix-formulas-confirm)
 	      (funcall org-table-fix-formulas-confirm "Fix formulas? "))
       (org-table-fix-formulas "@" (list (cons (number-to-string dline) "INVALID"))

lisp/org.el

@@ -14403,6 +14403,7 @@ If ONOFF is `on' or `off', don't toggle but set to this state."
 
 (defun org-align-tags-here (to-col)
   ;; Assumes that this is a headline
+  "Align tags on the current headline to TO-COL."
   (let ((pos (point)) (col (current-column)) ncol tags-l p)
     (beginning-of-line 1)
     (if	(and (looking-at (org-re ".*?\\([ \t]+\\)\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$"))
@@ -14421,7 +14422,7 @@ If ONOFF is `on' or `off', don't toggle but set to this state."
 	  (insert (make-string (- ncol (current-column)) ?\ ))
 	  (setq ncol (current-column))
 	  (when indent-tabs-mode (tabify p (point-at-eol)))
-	  (org-move-to-column (min ncol col) t nil t))
+	  (org-move-to-column (min ncol col)))
       (goto-char pos))))
 
 (defun org-set-tags-command (&optional arg just-align)
@@ -14480,9 +14481,7 @@ If DATA is nil or the empty string, any tags will be removed."
 (defun org-set-tags (&optional arg just-align)
   "Set the tags for the current headline.
 With prefix ARG, realign all tags in headings in the current buffer.
-When JUST-ALIGN is non-nil, only align tags.
+When JUST-ALIGN is non-nil, only align tags."
-When JUST-ALIGN is 'ignore-column, align tags without trying to set
-the column by ignoring invisible text."
   (interactive "P")
   (if (and (org-region-active-p) org-loop-over-headlines-in-active-region)
       (let ((cl (if (eq org-loop-over-headlines-in-active-region 'start-level)
@@ -14579,7 +14578,7 @@ the column by ignoring invisible text."
 	  (and (not (featurep 'xemacs)) c0 indent-tabs-mode (tabify p0 (point)))
 	  tags)
 	 (t (error "Tags alignment failed")))
-	(org-move-to-column col nil nil (not (eq just-align 'ignore-column)))
+	(org-move-to-column col)
 	(unless just-align
 	  (run-hooks 'org-after-tags-change-hook))))))