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223d4448c8
(https://github.com/ruby/irb/pull/478) Given that `show_doc` already supports syntax like `String#gsub`, it should be able to take it in non-string form too, like `edit` and `show_source` do. This ensures users can have a consistent syntax on argument between different commands.
63 lines
1.3 KiB
Ruby
63 lines
1.3 KiB
Ruby
# frozen_string_literal: false
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#
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# help.rb - helper using ri
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# $Release Version: 0.9.6$
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# $Revision$
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#
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# --
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#
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#
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#
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require_relative "nop"
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module IRB
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# :stopdoc:
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module ExtendCommand
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class Help < Nop
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class << self
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def transform_args(args)
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# Return a string literal as is for backward compatibility
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if args.empty? || string_literal?(args)
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args
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else # Otherwise, consider the input as a String for convenience
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args.strip.dump
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end
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end
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end
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category "Context"
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description "Enter the mode to look up RI documents."
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def execute(*names)
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require 'rdoc/ri/driver'
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opts = RDoc::RI::Driver.process_args([])
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IRB::ExtendCommand::Help.const_set(:Ri, RDoc::RI::Driver.new(opts))
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rescue LoadError, SystemExit
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IRB::ExtendCommand::Help.remove_method(:execute)
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# raise NoMethodError in ensure
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else
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def execute(*names)
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if names.empty?
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Ri.interactive
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return
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end
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names.each do |name|
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begin
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Ri.display_name(name.to_s)
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rescue RDoc::RI::Error
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puts $!.message
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end
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end
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nil
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end
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nil
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ensure
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execute(*names)
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end
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end
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end
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# :startdoc:
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end
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