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-#
-# irb/lc/help-message.rb -
-# $Release Version: 0.9.5$
-# $Revision$
-# by Keiju ISHITSUKA(keiju@ruby-lang.org)
-#
-# --
-#
-#
-#
-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
- --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