class IRB::Command::ShowDoc
Public Instance Methods
Source
# File lib/irb/command/show_doc.rb, line 25 def execute(arg) # Accept string literal for backward compatibility name = unwrap_string_literal(arg) require 'rdoc/ri/driver' unless ShowDoc.const_defined?(:Ri) opts = RDoc::RI::Driver.process_args([]) ShowDoc.const_set(:Ri, RDoc::RI::Driver.new(opts)) end if name.nil? Ri.interactive else begin Ri.display_name(name) rescue RDoc::RI::Error puts $!.message end end nil rescue LoadError, SystemExit warn "Can't display document because `rdoc` is not installed." end