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# frozen_string_literal: true
name 'help'
usage 'help [command_name]'
summary 'show help'
description <<~DESC
Show help for the given command, or show general help. When no command is
given, a list of available commands is displayed, as well as a list of global
command-line options. When a command is given, a command description, as well
as command-specific command-line options, are shown.
DESC
flag :v, :verbose, 'show more detailed help'
run do |opts, args, cmd|
if cmd.supercommand.nil?
raise NoHelpAvailableError,
'No help available because the help command has no supercommand'
end
is_verbose = opts.fetch(:verbose, false)
resolved_cmd = args.inject(cmd.supercommand) do |acc, name|
acc.command_named(name)
end
puts resolved_cmd.help(verbose: is_verbose, io: $stdout)
end
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