static void gnc_entry_ledger_move_cursor (VirtualLocation *p_new_virt_loc,
        gpointer user_data)
{
    GncEntryLedger *ledger = user_data;
    VirtualLocation new_virt_loc = *p_new_virt_loc;
    GncEntry *new_entry;
    GncEntry *old_entry;
    gboolean saved;

    if (!ledger) return;

    old_entry = gnc_entry_ledger_get_current_entry (ledger);
    new_entry = gnc_entry_ledger_get_entry (ledger, new_virt_loc.vcell_loc);

    gnc_suspend_gui_refresh ();
    saved = gnc_entry_ledger_save (ledger, old_entry != new_entry);
    gnc_resume_gui_refresh ();

    /* redrawing can muck everything up */
    if (saved)
    {
        VirtualCellLocation vcell_loc;

        /* redraw */
        gnc_entry_ledger_display_refresh (ledger);

        if (ledger->traverse_to_new)
            new_entry = gnc_entry_ledger_get_blank_entry (ledger);

        /* if the entry we were going to is still in the register,
         * then it may have moved. Find out where it is now. */
        if (gnc_entry_ledger_find_entry (ledger, new_entry, &vcell_loc))
        {
            VirtualCell *vcell;

            vcell = gnc_table_get_virtual_cell (ledger->table, vcell_loc);
            new_virt_loc.vcell_loc = vcell_loc;
        }
        else
            new_virt_loc.vcell_loc = ledger->table->current_cursor_loc.vcell_loc;
    }

    gnc_table_find_close_valid_cell (ledger->table, &new_virt_loc, FALSE);

    *p_new_virt_loc = new_virt_loc;
}
/* XXX This code is a cut-n-paste job from the SplitRegister code;
 * the split-register should be generalized to the point where a cut-n-paste
 * like this isn't required, and this should be trashed.
 */
void gnc_entry_ledger_load (GncEntryLedger *ledger, GList *entry_list)
{
    GncEntry *blank_entry, *find_entry;
    CursorBuffer *cursor_buffer;
    Table *table;

    GList *node;
    CellBlock *cursor_header, *cursor;
    VirtualCellLocation vcell_loc;
    VirtualLocation save_loc;
    gboolean start_primary_color = TRUE;

    int new_entry_row = -1;

    if (!ledger) return;

    /* Load up cells */
    load_discount_type_cells (ledger);
    load_discount_how_cells (ledger);
    gnc_entry_ledger_load_xfer_cells (ledger);

    blank_entry = gnc_entry_ledger_get_blank_entry (ledger);

    if (blank_entry == NULL && ledger->invoice == NULL && entry_list == NULL)
        return;

    if (blank_entry == NULL && ledger->invoice)
    {
        switch (ledger->type)
        {
        case GNCENTRY_ORDER_ENTRY:
        case GNCENTRY_INVOICE_ENTRY:
        case GNCENTRY_BILL_ENTRY:
        case GNCENTRY_EXPVOUCHER_ENTRY:
        case GNCENTRY_CUST_CREDIT_NOTE_ENTRY:
        case GNCENTRY_VEND_CREDIT_NOTE_ENTRY:
        case GNCENTRY_EMPL_CREDIT_NOTE_ENTRY:

            gnc_suspend_gui_refresh ();

            blank_entry = gncEntryCreate (ledger->book);
            gncEntrySetDateGDate (blank_entry, &ledger->last_date_entered);
            ledger->blank_entry_guid = *gncEntryGetGUID (blank_entry);

            gnc_resume_gui_refresh ();

            /* The rest of this does not apply to expense vouchers */
            if (ledger->type != GNCENTRY_EXPVOUCHER_ENTRY)
            {
                const GncOwner *owner = gncOwnerGetEndOwner (gncInvoiceGetOwner (ledger->invoice));
                GncTaxTable *table = NULL;
                GncTaxIncluded taxincluded_p = GNC_TAXINCLUDED_USEGLOBAL;
                gboolean taxincluded = FALSE;
                gnc_numeric discount = gnc_numeric_zero ();
                gnc_numeric price = gnc_numeric_zero ();

                /* Determine the Price from Customer's or Vendor's Job */
                switch (gncOwnerGetType (gncInvoiceGetOwner (ledger->invoice)))
                {
                case GNC_OWNER_JOB:
                    price = gncJobGetRate( gncOwnerGetJob (gncInvoiceGetOwner (ledger->invoice)));
                    break;
                default:
                    break;
                }

                /* Determine the TaxIncluded and Discount values */
                switch (gncOwnerGetType (owner))
                {
                case GNC_OWNER_CUSTOMER:
                    taxincluded_p = gncCustomerGetTaxIncluded (owner->owner.customer);
                    discount = gncCustomerGetDiscount (owner->owner.customer);
                    break;
                case GNC_OWNER_VENDOR:
                    taxincluded_p = gncVendorGetTaxIncluded (owner->owner.vendor);
                    break;
                default:
                    break;
                }

                /* Compute the default taxincluded */
                switch (taxincluded_p)
                {
                case GNC_TAXINCLUDED_YES:
                    taxincluded = TRUE;
                    break;
                case GNC_TAXINCLUDED_NO:
                    taxincluded = FALSE;
                    break;
                case GNC_TAXINCLUDED_USEGLOBAL:
                    if (ledger->prefs_group)
                    {
                        taxincluded = gnc_prefs_get_bool (ledger->prefs_group, GNC_PREF_TAX_INCL);
                    }
                    else
                    {
                        taxincluded = FALSE;
                    }
                    break;
                }

                /* Compute the proper taxtable */
                switch (gncOwnerGetType (owner))
                {
                case GNC_OWNER_CUSTOMER:
                    table = gnc_business_get_default_tax_table (ledger->book,
                            GNC_OWNER_CUSTOMER);

                    if (gncCustomerGetTaxTableOverride (owner->owner.customer))
                        table = gncCustomerGetTaxTable (owner->owner.customer);
                    break;

                case GNC_OWNER_VENDOR:
                    table = gnc_business_get_default_tax_table (ledger->book,
                            GNC_OWNER_VENDOR);

                    if (gncVendorGetTaxTableOverride (owner->owner.vendor))
                        table = gncVendorGetTaxTable (owner->owner.vendor);
                    break;

                default:
                    break;
                }

                if (ledger->is_cust_doc)
                {
                    gncEntrySetInvTaxTable (blank_entry, table);
                    gncEntrySetInvTaxIncluded (blank_entry, taxincluded);
                    gncEntrySetInvDiscount (blank_entry, discount);
                    gncEntrySetInvPrice (blank_entry, price);
                }
                else
                {
                    gncEntrySetBillTaxTable (blank_entry, table);
                    gncEntrySetBillTaxIncluded (blank_entry, taxincluded);
                    gncEntrySetBillPrice (blank_entry, price);
                }
            }

            break;
        default:
            ledger->blank_entry_guid = *guid_null ();
            break;
        }
        ledger->blank_entry_edited = FALSE;
    }

    table = ledger->table;

    gnc_table_leave_update (table, table->current_cursor_loc);
    save_loc = table->current_cursor_loc;

    /* Figure out where we are going to */
    if (ledger->traverse_to_new)
    {
        find_entry = blank_entry;
    }
    else if (ledger->hint_entry)
    {
        find_entry = ledger->hint_entry;
    }
    else
    {
        find_entry = gnc_entry_ledger_get_current_entry(ledger);
        /* XXX: get current entry (cursor_hint_xxx) */
    }

    /* If the current cursor has changed we save the values for later
     * possible restoration. */
    if (gnc_table_current_cursor_changed (table, TRUE) &&
            (find_entry == gnc_entry_ledger_get_current_entry (ledger)))
    {
        cursor_buffer = gnc_cursor_buffer_new ();
        gnc_table_save_current_cursor (table, cursor_buffer);
    }
    else
        cursor_buffer = NULL;

    /* disable move callback -- we don't want the cascade of
     * callbacks while we are fiddling with loading the register */
    gnc_table_control_allow_move (table->control, FALSE);

    /* invalidate the cursor */
    {
        VirtualLocation virt_loc;

        virt_loc.vcell_loc.virt_row = -1;
        virt_loc.vcell_loc.virt_col = -1;
        virt_loc.phys_row_offset = -1;
        virt_loc.phys_col_offset = -1;

        gnc_table_move_cursor_gui (table, virt_loc);
    }

    /* make sure that the header is loaded */
    vcell_loc.virt_row = 0;
    vcell_loc.virt_col = 0;
    cursor_header = gnc_table_layout_get_cursor (table->layout, CURSOR_HEADER);
    gnc_table_set_vcell (table, cursor_header, NULL, TRUE, TRUE, vcell_loc);
    vcell_loc.virt_row++;

    /* get the current time and reset the dividing row */
    table->model->dividing_row_upper = -1;
    table->model->dividing_row = -1;
    table->model->dividing_row_lower = -1;
    cursor = gnc_table_layout_get_cursor (table->layout, "cursor");

    /* Populate the table */
    for (node = entry_list; node; node = node->next)
    {
        GncEntry *entry = node->data;

        /* Don't load the blank entry */
        if (entry == blank_entry)
            continue;

        /* If this is the first load of the ledger, fill the quickfill cells */
        {
            /* XXX */
        }

        if (entry == find_entry)
            new_entry_row = vcell_loc.virt_row;

        gnc_table_set_vcell (table, cursor, gncEntryGetGUID (entry),
                             TRUE, start_primary_color, vcell_loc);
        vcell_loc.virt_row++;

        /* Flip color for the next guy */
        start_primary_color = !start_primary_color;
    }

    /* Add the blank entry at the end. */
    if (blank_entry)
    {
        gnc_table_set_vcell (table, cursor, gncEntryGetGUID (blank_entry),
                             TRUE, start_primary_color, vcell_loc);

        if (find_entry == blank_entry)
            new_entry_row = vcell_loc.virt_row;

        vcell_loc.virt_row++;
    }

    /* Resize the table */
    gnc_table_set_size (table, vcell_loc.virt_row, 1);

    /* Restore the cursor to its rightful position */
    if (new_entry_row > 0)
        save_loc.vcell_loc.virt_row = new_entry_row;

    if (gnc_table_find_close_valid_cell (table, &save_loc, FALSE))
    {
        gnc_table_move_cursor_gui (table, save_loc);

        if (find_entry == gnc_entry_ledger_get_current_entry (ledger))
            gnc_table_restore_current_cursor (table, cursor_buffer);
    }

    gnc_cursor_buffer_destroy (cursor_buffer);
    cursor_buffer = NULL;

    /* Reset the ledger */
    ledger->traverse_to_new = FALSE;
    ledger->hint_entry = NULL;

    /* Set the cell fractions */


    gnc_table_refresh_gui (table, TRUE);
    gnc_entry_ledger_show_entry (ledger, table->current_cursor_loc.vcell_loc);

    /* Set completion character */
    gnc_combo_cell_set_complete_char
    ((ComboCell *)
     gnc_table_layout_get_cell (table->layout, ENTRY_IACCT_CELL),
     gnc_get_account_separator ());

    gnc_combo_cell_set_complete_char
    ((ComboCell *)
     gnc_table_layout_get_cell (table->layout, ENTRY_BACCT_CELL),
     gnc_get_account_separator ());

    /* enable callback for cursor user-driven moves */
    gnc_table_control_allow_move (table->control, TRUE);
}
static gboolean gnc_entry_ledger_traverse (VirtualLocation *p_new_virt_loc,
        gncTableTraversalDir dir,
        gpointer user_data)
{
    GncEntryLedger *ledger = user_data;
    GncEntry *entry, *new_entry;
    gint response;
    VirtualLocation virt_loc;
    int changed;
    char const *cell_name;
    gboolean exact_traversal;

    if (!ledger) return FALSE;

    exact_traversal = (dir == GNC_TABLE_TRAVERSE_POINTER);

    entry = gnc_entry_ledger_get_current_entry (ledger);
    if (!entry)
        return FALSE;

    /* no changes, make sure we aren't going off the end */
    changed = gnc_table_current_cursor_changed (ledger->table, FALSE);
    if (!changed)
        return FALSE;

    virt_loc = *p_new_virt_loc;

    cell_name = gnc_table_get_current_cell_name (ledger->table);

    /* See if we are leaving the account field */
    do
    {
        ComboCell *cell;
        char *name;
        char *cell_name = NULL;

        switch (ledger->type)
        {
        case GNCENTRY_INVOICE_ENTRY:
        case GNCENTRY_INVOICE_VIEWER:
        case GNCENTRY_CUST_CREDIT_NOTE_ENTRY:
        case GNCENTRY_CUST_CREDIT_NOTE_VIEWER:
            cell_name = ENTRY_IACCT_CELL;
            break;
        case GNCENTRY_BILL_ENTRY:
        case GNCENTRY_BILL_VIEWER:
        case GNCENTRY_EXPVOUCHER_ENTRY:
        case GNCENTRY_EXPVOUCHER_VIEWER:
        case GNCENTRY_VEND_CREDIT_NOTE_ENTRY:
        case GNCENTRY_VEND_CREDIT_NOTE_VIEWER:
        case GNCENTRY_EMPL_CREDIT_NOTE_ENTRY:
        case GNCENTRY_EMPL_CREDIT_NOTE_VIEWER:
            cell_name = ENTRY_BACCT_CELL;
            break;
        default:
            g_warning ("Unhandled ledger type");
            break;
        }

        if (!cell_name)
            break;

        if (!gnc_cell_name_equal (cell_name, cell_name))
            break;

        if (!gnc_table_layout_get_cell_changed (ledger->table->layout,
                                                cell_name, FALSE))
            break;

        cell = (ComboCell *) gnc_table_layout_get_cell (ledger->table->layout,
                cell_name);
        if (!cell)
            break;

        name = cell->cell.value;
        if (!name || *name == '\0')
            break;

        /* Create the account if necessary. Also checks for a placeholder */
        if (!gnc_entry_ledger_get_account_by_name (ledger, (BasicCell *) cell,
                cell->cell.value,
                &ledger->full_refresh))
            return TRUE;

    }
    while (FALSE);


    /* See if we are leaving the TaxTable field */
    do
    {
        ComboCell *cell;
        GncTaxTable *table;
        char *name;

        if (!gnc_cell_name_equal (cell_name, ENTRY_TAXTABLE_CELL))
            break;

        if (!gnc_table_layout_get_cell_changed (ledger->table->layout,
                                                ENTRY_TAXTABLE_CELL, FALSE))
            break;

        cell = (ComboCell *) gnc_table_layout_get_cell (ledger->table->layout,
                ENTRY_TAXTABLE_CELL);
        if (!cell)
            break;

        name = cell->cell.value;
        if (!name || *name == '\0')
            break;

        table = gncTaxTableLookupByName (ledger->book, cell->cell.value);
        if (table)
            break;

        {
            const char *format = _("The tax table %s does not exist. "
                                   "Would you like to create it?");
            if (!gnc_verify_dialog (ledger->parent, TRUE, format, name))
                break;
        }

        ledger->full_refresh = FALSE;

        table = gnc_ui_tax_table_new_from_name (ledger->book, name);
        if (!table)
            break;

        ledger->full_refresh = TRUE;

        name = (char *)gncTaxTableGetName (table);
        gnc_combo_cell_set_value (cell, name);
        gnc_basic_cell_set_changed (&cell->cell, TRUE);

    }
    while (FALSE);


    /* See if we are tabbing off the end of the very last line
     * (i.e. the blank entry)
     */
    do
    {
        VirtualLocation virt_loc;

        if (!changed && !ledger->blank_entry_edited)
            break;

        if (dir != GNC_TABLE_TRAVERSE_RIGHT)
            break;

        virt_loc = ledger->table->current_cursor_loc;
        if (gnc_table_move_vertical_position (ledger->table, &virt_loc, 1))
            break;

        virt_loc = ledger->table->current_cursor_loc;
        if (gnc_table_move_tab (ledger->table, &virt_loc, TRUE))
            break;

        *p_new_virt_loc = ledger->table->current_cursor_loc;

        /* Yep, we're trying to leave the blank entry -- make sure
         * we are allowed to do so by verifying the current cursor.
         * If the current cursor is ok, then move on!
         */

        /* Verify that the cursor is ok.  If we can't save the cell, don't move! */
        if (!gnc_entry_ledger_verify_can_save (ledger))
        {
            return TRUE;
        }

        (p_new_virt_loc->vcell_loc.virt_row)++;
        p_new_virt_loc->phys_row_offset = 0;
        p_new_virt_loc->phys_col_offset = 0;

        ledger->traverse_to_new = TRUE;

        /* If we're here, we're tabbing off the end of the 'blank entry' */
        return FALSE;

    }
    while (FALSE);

    /* Now see if we are changing cursors. If not, we may be able to
     * auto-complete. */
    if (!gnc_table_virtual_cell_out_of_bounds (ledger->table,
            virt_loc.vcell_loc))
    {
        if (gnc_entry_ledger_auto_completion (ledger, dir, p_new_virt_loc))
            return FALSE;
    }

    /* Check for going off the end */
    gnc_table_find_close_valid_cell (ledger->table, &virt_loc, exact_traversal);

    /* Same entry, no problem -- we're just moving backwards in the cursor */
    new_entry = gnc_entry_ledger_get_entry (ledger, virt_loc.vcell_loc);
    if (entry == new_entry)
    {
        *p_new_virt_loc = virt_loc;

        return FALSE;
    }

    /* If we are here, then we are trying to leave the cursor.  Make sure
     * the cursor we are leaving is valid.  If so, ask the user if the
     * changes should be recorded.  If not, don't go anywhere.
     */

    /* Verify this cursor -- if it's not valid, don't let them move on */
    if (!gnc_entry_ledger_verify_can_save (ledger))
    {
        *p_new_virt_loc = ledger->table->current_cursor_loc;
        return TRUE;
    }

    /*
     * XXX  GNCENTRY_INVOICE_EDIT processing to be added:
     * 1) check if the qty field changed.
     * 2) if so, check if this entry is part of an order.
     * 3) if so, ask if they want to change the entry or
     *    split the entry into two parts.
     */

    /* Ok, we are changing lines and the current entry has
     * changed. We only ask them what they want to do in
     * limited cases -- usually just let the change go through.
     */
    {
        GtkWidget *dialog;
        const char *title = _("Save the current entry?");
        const char *message =
            _("The current entry has been changed.  However, this entry is "
              "part of an existing order. Would you like to record the change "
              "and effectively change your order?");

        switch (ledger->type)
        {
        case GNCENTRY_INVOICE_ENTRY:
        case GNCENTRY_CUST_CREDIT_NOTE_ENTRY:
            if (gncEntryGetOrder (entry) != NULL)
            {
                dialog = gtk_message_dialog_new(GTK_WINDOW(ledger->parent),
                                                GTK_DIALOG_DESTROY_WITH_PARENT,
                                                GTK_MESSAGE_QUESTION,
                                                GTK_BUTTONS_NONE,
                                                "%s", title);
                gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dialog),
                        "%s", message);
                gtk_dialog_add_buttons(GTK_DIALOG(dialog),
                                       _("_Don't Record"), GTK_RESPONSE_REJECT,
                                       GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                                       _("_Record"), GTK_RESPONSE_ACCEPT,
                                       NULL);
                response = gnc_dialog_run(GTK_DIALOG(dialog), "invoice_entry_changed");
                gtk_widget_destroy(dialog);
                break;
            }

            /* FALL THROUGH */
        default:
            response = GTK_RESPONSE_ACCEPT;
            break;
        }
    }

    switch (response)
    {
    case GTK_RESPONSE_ACCEPT:
        break;

    case GTK_RESPONSE_REJECT:
    {
        VirtualCellLocation vcell_loc;
        GncEntry *new_entry;

        new_entry = gnc_entry_ledger_get_entry (ledger, virt_loc.vcell_loc);

        gnc_entry_ledger_cancel_cursor_changes (ledger);

        if (gnc_entry_ledger_find_entry (ledger, new_entry, &vcell_loc))
            virt_loc.vcell_loc = vcell_loc;

        gnc_table_find_close_valid_cell (ledger->table, &virt_loc,
                                         exact_traversal);

        *p_new_virt_loc = virt_loc;
    }

    break;

    case GTK_RESPONSE_CANCEL:
    default:
        return TRUE;
    }

    return FALSE;
}
static gboolean
gnc_entry_ledger_save (GncEntryLedger *ledger, gboolean do_commit)
{
    GncEntry *blank_entry;
    GncEntry *entry;

    if (!ledger) return FALSE;

    blank_entry = gnc_entry_ledger_get_blank_entry (ledger);

    entry = gnc_entry_ledger_get_current_entry (ledger);
    if (entry == NULL) return FALSE;

    /* Try to avoid heavy-weight updates if nothing has changed */
    if (!gnc_table_current_cursor_changed (ledger->table, FALSE))
    {
        if (!do_commit) return FALSE;

        if (entry == blank_entry)
        {
            if (ledger->blank_entry_edited)
            {
                ledger->last_date_entered = gncEntryGetDateGDate (entry);
                ledger->blank_entry_guid = *guid_null ();
                ledger->blank_entry_edited = FALSE;
                blank_entry = NULL;
            }
            else
                return FALSE;
        }

        return TRUE;
    }

    gnc_suspend_gui_refresh ();

    if (!gncEntryIsOpen (entry))
        gncEntryBeginEdit (entry);

    gnc_table_save_cells (ledger->table, entry);

    if (entry == blank_entry)
    {
        Timespec ts;
        ts.tv_sec = time(NULL);
        ts.tv_nsec = 0;
        gncEntrySetDateEntered (blank_entry, ts);

        switch (ledger->type)
        {
        case GNCENTRY_ORDER_ENTRY:
            gncOrderAddEntry (ledger->order, blank_entry);
            break;
        case GNCENTRY_INVOICE_ENTRY:
        case GNCENTRY_CUST_CREDIT_NOTE_ENTRY:
            /* Anything entered on an invoice entry must be part of the invoice! */
            gncInvoiceAddEntry (ledger->invoice, blank_entry);
            break;
        case GNCENTRY_BILL_ENTRY:
        case GNCENTRY_EXPVOUCHER_ENTRY:
        case GNCENTRY_VEND_CREDIT_NOTE_ENTRY:
        case GNCENTRY_EMPL_CREDIT_NOTE_ENTRY:
            /* Anything entered on an invoice entry must be part of the invoice! */
            gncBillAddEntry (ledger->invoice, blank_entry);
            break;
        default:
            /* Nothing to do for viewers */
            g_warning ("blank entry traversed in a viewer");
            break;
        }
    }

    if (entry == blank_entry)
    {
        if (do_commit)
        {
            ledger->blank_entry_guid = *guid_null ();
            blank_entry = NULL;
            ledger->last_date_entered = gncEntryGetDateGDate (entry);
        }
        else
            ledger->blank_entry_edited = TRUE;
    }

    if (do_commit)
        gncEntryCommitEdit (entry);

    gnc_table_clear_current_cursor_changes (ledger->table);

    gnc_resume_gui_refresh ();

    return TRUE;
}
static gboolean
gnc_entry_ledger_auto_completion (GncEntryLedger *ledger,
                                  gncTableTraversalDir dir,
                                  VirtualLocation *p_new_virt_loc)
{
    GncEntry *entry;
    GncEntry *blank_entry;
    GncEntry *auto_entry;
    const char* cell_name;
    const char *desc;
    BasicCell *cell = NULL;
    char *account_name = NULL;
    char *new_value = NULL;

    g_assert(ledger);
    g_assert(ledger->table);
    blank_entry = gnc_entry_ledger_get_blank_entry (ledger);

    /* auto-completion is only triggered by a tab out */
    if (dir != GNC_TABLE_TRAVERSE_RIGHT)
        return FALSE;

    entry = gnc_entry_ledger_get_current_entry (ledger);
    if (entry == NULL)
        return FALSE;

    cell_name = gnc_table_get_current_cell_name (ledger->table);

    /* Auto-completion is done only in an entry ledger */
    switch (ledger->type)
    {
    case GNCENTRY_ORDER_ENTRY:
    case GNCENTRY_INVOICE_ENTRY:
    case GNCENTRY_BILL_ENTRY:
    case GNCENTRY_EXPVOUCHER_ENTRY:
    case GNCENTRY_CUST_CREDIT_NOTE_ENTRY:
    case GNCENTRY_VEND_CREDIT_NOTE_ENTRY:
    case GNCENTRY_EMPL_CREDIT_NOTE_ENTRY:
        break;
    default:
        return FALSE;
    }

    /* Further conditions before we actually do auto-completion: */
    /* There must be a blank entry */
    if (blank_entry == NULL)
        return FALSE;

    /* we must be on the blank entry */
    if (entry != blank_entry)
        return FALSE;

    /* and leaving the description cell */
    if (!gnc_cell_name_equal (cell_name, ENTRY_DESC_CELL))
        return FALSE;

    /* nothing but the date and description should be changed */
    /* FIXME, this should be refactored. */
    if (gnc_table_layout_get_cell_changed (ledger->table->layout,
                                           ENTRY_ACTN_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_QTY_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_PRIC_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_DISC_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_DISTYPE_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_DISHOW_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_IACCT_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_BACCT_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_TAXABLE_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_TAXINCLUDED_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_TAXTABLE_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_VALUE_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_TAXVAL_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_BILLABLE_CELL, TRUE)
            || gnc_table_layout_get_cell_changed (ledger->table->layout,
                    ENTRY_PAYMENT_CELL, TRUE))
        return FALSE;

    /* and the description should indeed be changed */
    if (!gnc_table_layout_get_cell_changed (ledger->table->layout,
                                            ENTRY_DESC_CELL, TRUE))
        return FALSE;

    /* to a non-empty value */
    desc = gnc_table_layout_get_cell_value (ledger->table->layout, ENTRY_DESC_CELL);
    if ((desc == NULL) || (*desc == '\0'))
        return FALSE;

    /* Ok, we are sure we want to trigger auto-completion. Now find an
     * entry to copy the values from.  FIXME: Currently we only use
     * the entries from the current invoice/bill, but it would be
     * better to draw this from a larger set of entries. */
    auto_entry =
        /* Use this for book-wide auto-completion of the invoice entries */
        find_entry_in_book_by_desc(ledger, desc);
    /* #else */
    /*     gnc_find_entry_in_reg_by_desc(ledger, desc); */
    /* #endif */

    if (auto_entry == NULL)
        return FALSE;

    /* now perform the completion */
    gnc_suspend_gui_refresh ();

    /* Auto-complete the action field */
    cell = gnc_table_layout_get_cell (ledger->table->layout, ENTRY_ACTN_CELL);
    set_value_combo_cell (cell, gncEntryGetAction (auto_entry));

    /* Auto-complete the account field */
    switch (ledger->type)
    {
    case GNCENTRY_INVOICE_ENTRY:
    case GNCENTRY_CUST_CREDIT_NOTE_ENTRY:
        cell = gnc_table_layout_get_cell (ledger->table->layout, ENTRY_IACCT_CELL);
        account_name = gnc_get_account_name_for_register (gncEntryGetInvAccount(auto_entry));
        break;
    case GNCENTRY_EXPVOUCHER_ENTRY:
    case GNCENTRY_BILL_ENTRY:
    case GNCENTRY_VEND_CREDIT_NOTE_ENTRY:
    case GNCENTRY_EMPL_CREDIT_NOTE_ENTRY:
        cell = gnc_table_layout_get_cell (ledger->table->layout, ENTRY_BACCT_CELL);
        account_name = gnc_get_account_name_for_register (gncEntryGetBillAccount(auto_entry));
        break;
    case GNCENTRY_ORDER_ENTRY:
    default:
        cell = NULL;
        account_name = NULL;
        break;
    }
    set_value_combo_cell (cell, account_name);
    g_free (account_name);

    /* Auto-complete quantity cell
     * Note: we always autofill a positive quantity value. This allows us to
     * - reuse invoice entries on credit note ledgers, meaning you can credit
     *   some invoice entry via autofill without having to manually fix the sign
     *   on the credit note.
     * - autofill credit note entries on other credit note entries (without having
     *   to juggle sign reversals internally)
     * - autofill credit note entries on invoice ledgers
     *
     * Disadvantage: invoice entries with explicitly set negative quantities will
     * be autofilled to positive quantities in later uses. But it seems less common
     * to me to require a negative entry again next time.
     */
    cell = gnc_table_layout_get_cell (ledger->table->layout, ENTRY_QTY_CELL);
    set_value_price_cell (cell, gnc_numeric_abs(gncEntryGetQuantity (auto_entry)));

    /* Auto-complete price cell */
    {
        gnc_numeric price;
        switch (ledger->type)
        {
        case GNCENTRY_INVOICE_ENTRY:
        case GNCENTRY_CUST_CREDIT_NOTE_ENTRY:
            price = gncEntryGetInvPrice (auto_entry);
            break;
        default:
            price = gncEntryGetBillPrice (auto_entry);
        }

        /* Auto-complete price cell */
        cell = gnc_table_layout_get_cell (ledger->table->layout, ENTRY_PRIC_CELL);
        set_value_price_cell (cell, price);
    }

    /* We intentionally skip the discount column */

    /* Taxable?, Tax-include?, Tax table */
    {
        gboolean taxable, taxincluded;
        GncTaxTable *taxtable;
        switch (ledger->type)
        {
        case GNCENTRY_INVOICE_ENTRY:
        case GNCENTRY_CUST_CREDIT_NOTE_ENTRY:
            taxable = gncEntryGetInvTaxable (auto_entry);
            taxincluded = gncEntryGetInvTaxIncluded (auto_entry);
            taxtable = gncEntryGetInvTaxTable (auto_entry);
            break;
        default:
            taxable = gncEntryGetBillTaxable (auto_entry);
            taxincluded = gncEntryGetBillTaxIncluded (auto_entry);
            taxtable = gncEntryGetBillTaxTable (auto_entry);
        }

        /* Taxable? cell */
        cell = gnc_table_layout_get_cell (ledger->table->layout, ENTRY_TAXABLE_CELL);
        gnc_checkbox_cell_set_flag ((CheckboxCell *) cell, taxable);
        gnc_basic_cell_set_changed (cell, TRUE);

        /* taxincluded? cell */
        cell = gnc_table_layout_get_cell (ledger->table->layout, ENTRY_TAXINCLUDED_CELL);
        gnc_checkbox_cell_set_flag ((CheckboxCell *) cell, taxincluded);
        gnc_basic_cell_set_changed (cell, TRUE);

        /* Taxable? cell */
        cell = gnc_table_layout_get_cell (ledger->table->layout, ENTRY_TAXTABLE_CELL);
        set_value_combo_cell(cell, gncTaxTableGetName (taxtable));
    }


    gnc_resume_gui_refresh ();

    /* now move to the non-empty amount column unless config setting says not */
    if ( !gnc_gconf_get_bool(GCONF_GENERAL_REGISTER,
                             "tab_includes_transfer_on_memorised", NULL) )
    {
        VirtualLocation new_virt_loc;
        const char *cell_name = ENTRY_QTY_CELL;

        if (gnc_table_get_current_cell_location (ledger->table, cell_name,
                &new_virt_loc))
            *p_new_virt_loc = new_virt_loc;
    }

    return TRUE;
}