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Extension for GNU Readline Library
Example:
require "readline"
include Readline
line = readline("Prompt> ", true)
[Readline]
<module function>
readline(prompt, add_hostory=nil)
Reads one line wit line edit. the line is added to the
history also if "add" is true.
<class mehods>
completion_proc = proc
Specifies Proc object to determin completion behavior. It
shoule take input-string, and return 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 chacatcter to be appended on completion.
Nothing will be appended if empty string ("") or nil is specified.
completion_append_character
Returns a string contains 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.
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