The history buffer. It extends Enumerable module, so it behaves just like an array. For example, gets the fifth content that the user input by HISTORY.

The Object with the call method that is a completion for filename. This is sets by ::completion_proc= method.

The Object with the call method that is a completion for usernames. This is sets by ::completion_proc= method.

Version string of GNU Readline or libedit.

The Readline module provides interface for GNU Readline. This module defines a number of methods to facilitate completion and accesses input history from the Ruby interpreter. This module supported Edit Line(libedit) too. libedit is compatible with GNU Readline.

GNU Readline

www.gnu.org/directory/readline.html

libedit

www.thrysoee.dk/editline/

Reads one inputted line with line edit by ::readline method. At this time, the facilitatation completion and the key bind like Emacs can be operated like GNU Readline.

require "readline"
while buf = Readline.readline("> ", true)
  p buf
end

The content that the user input can be recorded to the history. The history can be accessed by Readline::HISTORY constant.

require "readline"
while buf = Readline.readline("> ", true)
  p Readline::HISTORY.to_a
  print("-> ", buf, "\n")
end

Most of methods raise SecurityError exception if $SAFE is 4.

Documented by TAKAO Kouji <kouji at takao7 dot net>.