Extension for GNU Readline Library

Example:

require "readline"
include Readline

line = readline("Prompt> ", true)

Readline

<module function>

readline(prompt, add_history=nil)

Reads one line with line editing.  The inputted line is added to the
history if add_history is true.

<class methods>

completion_proc = proc

Specifies a Proc object to determine completion behavior.  It
should take input-string, and return an array of completion
candidates.

completion_proc

Returns the completion Proc object.

completion_case_fold = bool

Sets whether or not to ignore case on completion.

completion_case_fold

Returns true if completion ignores case.

completion_append_character = char

Specifies a character to be appended on completion.
Nothing will be appended if an empty string ("") or nil is
specified.

completion_append_character

Returns a string containing a character to be appended on
completion.  The default is a space (" ").

vi_editing_mode

Specifies VI editing mode.

emacs_editing_mode

Specifies Emacs editing mode.

<class constants>

HISTORY

The history buffer. It behaves just like an array.