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# irb/lc/help-message.rb -
# $Release Version: 0.9.6$
# $Revision: 31630 $
# by Keiju ISHITSUKA(keiju@ruby-lang.org)
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Usage: irb.rb [options] [programfile] [arguments]
-f Suppress read of ~/.irbrc
-m Bc mode (load mathn, fraction or matrix are available)
-d Set $DEBUG to true (same as `ruby -d')
-r load-module Same as `ruby -r'
-I path Specify $LOAD_PATH directory
-U Same as `ruby -U`
-E enc Same as `ruby -E`
-w Same as `ruby -w`
-W[level=2] Same as `ruby -W`
--inspect Use `inspect' for output (default except for bc mode)
--noinspect Don't use inspect for output
--readline Use Readline extension module
--noreadline Don't use Readline extension module
--prompt prompt-mode
--prompt-mode prompt-mode
Switch prompt mode. Pre-defined prompt modes are
`default', `simple', `xmp' and `inf-ruby'
--inf-ruby-mode Use prompt appropriate for inf-ruby-mode on emacs.
Suppresses --readline.
--simple-prompt Simple prompt mode
--noprompt No prompt mode
--tracer Display trace for each execution of commands.
--back-trace-limit n
Display backtrace top n and tail n. The default
value is 16.
--irb_debug n Set internal debug level to n (not for popular use)
-v, --version Print the version of irb
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