Temporarily disable the call to psppire_sheet_extend_selection
since it interferes with the active cell border and selection
is currently not working anyway.
if (sheet->select_status == PSPPIRE_SHEET_NORMAL && row == sheet->active_cell.row &&
column == sheet->active_cell.col) return TRUE;
if (sheet->select_status == PSPPIRE_SHEET_NORMAL && row == sheet->active_cell.row &&
column == sheet->active_cell.col) return TRUE;
if (PSPPIRE_SHEET_IN_SELECTION (sheet) && mods&GDK_BUTTON1_MASK)
psppire_sheet_extend_selection (sheet, row, column);
if (PSPPIRE_SHEET_IN_SELECTION (sheet) && mods&GDK_BUTTON1_MASK)
psppire_sheet_extend_selection (sheet, row, column);