## 例

`

     mixed readline_info ([ string $varname [, string $newvalue ]] )

`

## 説明

Gets or sets various internal readline variables.

## 戻り値

If called with no parameters, this function returns an array of values for all the setting readline uses. The elements will be indexed by the following values: done, end, erase_empty_line, library_version, line_buffer, mark, pending_input, point, prompt, readline_name, and terminal_name. If called with one or two parameters, the old value is returned.