* lib/optparse.rb (OptionParser::Officious): separate completion

  options from --help.  [ruby-dev:42690]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30121 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Author: nobu

ChangeLog

@@ -1,4 +1,7 @@
-Tue Dec  7 22:29:45 2010  Nobuyoshi Nakada  <[email protected]>
+Tue Dec  7 22:31:08 2010  Nobuyoshi Nakada  <[email protected]>
+
+	* lib/optparse.rb (OptionParser::Officious): separate completion
+	  options from --help.  [ruby-dev:42690]
 
 	* lib/optparse.rb (OptionParser::Completion#candidate),
 	  (OptionParser::Switch#compsys): remove unused variables.

lib/optparse.rb

@@ -777,22 +777,30 @@ def compsys(to, name = File.basename($0)) # :nodoc:
   # --help
   # Shows option summary.
   #
-  # --help=complete=WORD
+  Officious['help'] = proc do |parser|
+    Switch::NoArgument.new do |arg|
+      puts parser.help
+      exit
+    end
+  end
+
+  # --*-completion-for-bash=WORD
   # Shows candidates for command line completion.
   #
-  # --help=zshcomplete[=NAME:FILE]
+  Officious['*-completion-bash'] = proc do |parser|
+    Switch::RequiredArgument.new do |arg|
+      puts parser.candidate(arg)
+      exit
+    end
+  end
+
+  #
+  # --*-completion-zsh[=NAME:FILE]
   # Creates zsh completion file.
   #
-  Officious['help'] = proc do |parser|
+  Officious['*-completion-zsh'] = proc do |parser|
     Switch::OptionalArgument.new do |arg|
-      case arg
-      when /\Acomplete=(.*)/
-        puts parser.candidate($1)
-      when /\Azshcomplete(?:=(.+))?/
-        parser.compsys(STDOUT, $1)
-      else
-        puts parser.help
-      end
+      parser.compsys(STDOUT, arg)
       exit
     end
   end

misc/rb_optparse.bash

@@ -11,7 +11,7 @@
 #      rb_optparse command_using_optparse_2
 
 _rb_optparse() {
-  COMPREPLY=($("${COMP_WORDS[0]}" --help=complete="${COMP_WORDS[COMP_CWORD]}"))
+  COMPREPLY=($("${COMP_WORDS[0]}" "--*-completion-bash=${COMP_WORDS[COMP_CWORD]}"))
   return 0
 }
 

misc/rb_optparse.zsh

@@ -16,7 +16,7 @@ generate-complete-function/ruby/optparse ()
 {
     local cmpl="_${1:t}"
     mkdir -p "${ZSH_COMPLETION_DIR-$HOME/.zsh.d/Completion}"
-    $1 --help=zshcomplete="${1:t}" > "${ZSH_COMPLETION_DIR-$HOME/.zsh.d/Completion}/$cmpl"
+    $1 "--*-completion-zsh=${1:t}" > "${ZSH_COMPLETION_DIR-$HOME/.zsh.d/Completion}/$cmpl"
     if [[ $(type -w "$cmpl") == "${cmpl}: function" ]]; then
 	unfunction "$cmpl"
 	autoload -U "$cmpl"

sample/optparse/opttest.rb

@@ -18,7 +18,7 @@
   opts.on_tail("common options:")
 
   # no argument, shows at tail
-  opts.on_tail("--usage", "show this message") {puts opts; exit}
+  opts.on_tail("--help", "show this message") {puts opts; exit}
 
   # mandatory argument
   opts.on("-r", "--require=LIBRARY", String,