* lib/optparse.rb: shell completion support for bash.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29832 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

misc/rb_optparse.bash

@@ -0,0 +1,20 @@
+#! /bin/bash
+# Completion for bash:
+#
+# (1) install this file,
+#
+# (2) load the script, and
+#      . ~/.profile.d/rb_optparse.bash
+#
+# (3) define completions in your .bashrc,
+#      rb_optparse command_using_optparse_1
+#      rb_optparse command_using_optparse_2
+
+_rb_optparse() {
+  COMPREPLY=($("${COMP_WORDS[0]}" --help=complete="${COMP_WORDS[COMP_CWORD]}"))
+  return 0
+}
+
+rb_optparse () {
+    [ $# = 0 ] || complete -o default -F _rb_optparse "$@"
+}