Ad ledger-mode flags to limit sort region for sort buffer

doc/ledger-mode.texi

@@ -303,6 +303,21 @@ transactions like automated transaction, will be moved in the sorting
 process and may not function correctly afterwards.  For this reason
 there is no key sequence.
 
+You can limit the allowed sort region by using embedded Ledger-mode
+markup within your ledger.  For exmaple 
+@smallexample
+<<< infomration to not sort >>>
+
+; Ledger-mode: Start sort
+
+<<< xacts to sort >>>
+
+;Ledger-mode: End sort
+
+<<< information to not sort >>>
+@end smallexample
+
+
 @node Hiding Transactions,  , Sorting Transactions, The Ledger Buffer
 @section Hiding Transactions
 

lisp/ldg-sort.el

@@ -54,8 +54,8 @@
 				      ;; the beginning of next record
 				      ;; after the region
 	(setq new-end (point))
-	(narrow-to-region beg end)
-	(goto-char (point-min))
+	(narrow-to-region new-beg new-end)
+	(goto-char new-beg)
 
 	(let ((inhibit-field-text-motion t))
 	  (sort-subr
@@ -66,7 +66,14 @@
 (defun ledger-sort-buffer ()
   "Sort the entire buffer."
   (interactive)
-  (ledger-sort-region (point-min) (point-max)))
+  (let ((sort-start (point-min))
+	(sort-end (point-max)))
+    (goto-char (point-min))
+    (if (re-search-forward ";.*Ledger-mode:.*Start sort" nil t)
+	(set 'sort-start (match-end 0)))
+    (if (re-search-forward ";.*Ledger-mode:.*End sort" nil t)
+	(set 'sort-end (match-end 0)))    
+    (ledger-sort-region sort-start sort-end)))
 
 (provide 'ldg-sort)