Bug 798568 - Transaction Copy/Paste problem

When transactions are copied and pasted to the blank transaction on a
register in basic view the wrong split values are displayed. This is
due to the blank split being used for the wrong side of the transaction.

To fix this, record the copied anchor split index and use that to
reference the blank split when the transaction is pasted.

gnucash/register/ledger-core/split-register.c

@@ -73,6 +73,7 @@ typedef struct
     };
     CursorClass cursor_class;
     GncGUID leader_guid;
+    gint anchor_split_index;
 } ft_fs_store;
 
 static ft_fs_store copied_item = { 0, { NULL } };
@@ -101,6 +102,7 @@ clear_copied_item()
     copied_item.ft = NULL;
     copied_item.cursor_class = CURSOR_CLASS_NONE;
     copied_item.leader_guid = *guid_null();
+    copied_item.anchor_split_index = 0;
 }
 
 static void
@@ -828,6 +830,7 @@ gnc_split_register_copy_current_internal (SplitRegister* reg,
             }
 
             copied_item.leader_guid = info->default_account;
+            copied_item.anchor_split_index = xaccTransGetSplitIndex (trans, split);
         }
     }
 
@@ -1082,7 +1085,11 @@ gnc_split_register_paste_current (SplitRegister* reg)
         if (trans == blank_trans)
         {
             /* In pasting, the blank split is deleted. Pick a new one. */
-            blank_split = xaccTransGetSplit (trans, 0);
+            gint anchor_split_index = copied_item.anchor_split_index;
+            if (anchor_split_index > num_splits)
+                anchor_split_index = 0;
+
+            blank_split = xaccTransGetSplit (trans, anchor_split_index);
             info->blank_split_guid = *xaccSplitGetGUID (blank_split);
             info->blank_split_edited = TRUE;
             info->auto_complete = FALSE;