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un.rb: help order

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* lib/un.rb (UN#help): show help messages in the given order.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41801 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2013-07-05 13:43:25 +00:00
parent 0fc3541664
commit eb06e8d3ad
1 changed files with 13 additions and 3 deletions
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16
lib/un.rb
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@ -351,15 +351,25 @@ module UN # :nodoc:
module_function
def help(argv, output: $stdout)
all = argv.empty?
cmd = nil
if all
store = proc {|msg| output << msg}
else
messages = {}
store = proc {|msg| messages[cmd] = msg}
end
open(__FILE__) do |me|
while me.gets("##\n")
if help = me.gets("\n\n")
if all or argv.delete help[/^#\s*ruby\s.*-e\s+(\w+)/, 1]
output << help.gsub(/^# ?/, "")
break if !all and argv.empty?
if all or argv.include?(cmd = help[/^#\s*ruby\s.*-e\s+(\w+)/, 1])
store[help.gsub(/^# ?/, "")]
break unless all or argv.size > messages.size
end
end
end
end
if messages
argv.each {|cmd| output << messages[cmd]}
end
end
end