Turns all urls into clickable links. If a block is given, each url is
yielded and the result is used as the link text.
# File actionpack/lib/action_view/helpers/text_helper.rb, line 448
def auto_link_urls(text, href_options = {})
extra_options = tag_options(href_options.stringify_keys) || ""
text.gsub(AUTO_LINK_RE) do
all, a, b, c, d = $&, $1, $2, $3, $4
if a =~ /<a\s/i # don't replace URL's that are already linked
all
else
text = b + c
text = yield(text) if block_given?
%(#{a}<a href="#{b=="www."?"http://www.":b}#{c}"#{extra_options}>#{text}</a>#{d})
end
end
end
