of failing with undefined method `split' for nil:NilClass for
mailto: URIs without opaque part. [Bug #10738]
* test/uri/testuri.rb: Test for above
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49254 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/uri/mailto.rb (HEADER_PATTERN): removed.
* lib/uri/mailto.rb (HEADER_REGEXP): use RFC 6068 hfields.
* lib/uri/mailto.rb (EMAIL_REGEXP): use HTML5 email regexp.
* lib/uri/mailto.rb (URI::MailTo.build): support multiple to addresses.
* lib/uri/mailto.rb (URI::MailTo#initialize): Support multiple to
addresses. Don't check with regexp, only split.
* lib/uri/mailto.rb (URI::MailTo#check_to): verify by matching
URI path-rootless and HTML5 email regexp with unescaped one.
* lib/uri/mailto.rb (URI::MailTo#check_headers): verify only by
HEADER_REGEXP.
* lib/uri/mailto.rb (URI::MailTo#set_headers): don't check by
HEADER_REGEXP, only split it.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46590 b2dd03c8-39d4-4d8f-98ff-823fe69b080e