Add a way to search for a link search without impacting buffer visibility

* lisp/org.el (org-link-search): Add an optional argument preventing
  function from revealing context around match.

lisp/org.el

@@ -9758,13 +9758,18 @@ the window configuration before `org-open-at-point' was called using:
     (set-window-configuration org-window-config-before-follow-link)")
 
 (defvar org-link-search-inhibit-query nil) ;; dynamically scoped
-(defun org-link-search (s &optional type avoid-pos)
+(defun org-link-search (s &optional type avoid-pos stealth)
   "Search for a link search option.
 If S is surrounded by forward slashes, it is interpreted as a
 regular expression.  In org-mode files, this will create an `org-occur'
 sparse tree.  In ordinary files, `occur' will be used to list matches.
 If the current buffer is in `dired-mode', grep will be used to search
-in all files.  If AVOID-POS is given, ignore matches near that position."
+in all files.  If AVOID-POS is given, ignore matches near that position.
+
+When optional argument STEALTH is non-nil, do not modify
+visibility around point, thus ignoring
+`org-show-hierarchy-above', `org-show-following-heading' and
+`org-show-siblings' variables."
   (let ((case-fold-search t)
 	(s0 (mapconcat 'identity (org-split-string s "[ \t\r\n]+") " "))
 	(markers (concat "\\(?:" (mapconcat (lambda (x) (regexp-quote (car x)))
@@ -9888,7 +9893,9 @@ in all files.  If AVOID-POS is given, ignore matches near that position."
 	      (goto-char (match-beginning 1))
 	    (goto-char pos)
 	    (error "No match"))))))
-    (and (eq major-mode 'org-mode) (org-show-context 'link-search))
+    (and (eq major-mode 'org-mode)
+	 (not stealth)
+	 (org-show-context 'link-search))
     type))
 
 (defun org-search-not-self (group &rest args)