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//opt/alt/ruby22/lib64/ruby/2.2.0/irb/ext/math-mode.rb
# # math-mode.rb - # $Release Version: 0.9.6$ # $Revision: 47112 $ # by Keiju ISHITSUKA(keiju@ruby-lang.org) # # -- # # # require "mathn" module IRB class Context # Returns whether bc mode is enabled. # # See #math_mode= attr_reader :math_mode # Alias for #math_mode alias math? math_mode # Sets bc mode, which loads +lib/mathn.rb+ so fractions or matrix are # available. # # Also available as the +-m+ command line option. # # See IRB@Command+line+options and the unix manpage <code>bc(1)</code> for # more information. def math_mode=(opt) if @math_mode == true && !opt IRB.fail CantReturnToNormalMode return end @math_mode = opt if math_mode main.extend Math print "start math mode\n" if verbose? end end def inspect? @inspect_mode.nil? && !@math_mode or @inspect_mode end end end
