-# Nick's web site: xhtml_compat filter. Add whitespace before the end
-# of empty element tags to improve compatibility with old browsers.
+# Nick's web site: xhtml_compat filter. Perform fixups to improve
+# XHTML compatibility with various user agents.
#
-# Copyright © 2020 Nick Bowler
+# Copyright © 2019-2021 Nick Bowler
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
identifier :xhtml_compat
def run(content, params = {})
+ # Old versions of Netscape get confused by <hr/> but have no problem
+ # with <hr />, so avoid that by adding spaces to such elements.
text = content.gsub(/([^[:space:]])\/>/m, '\1 />');
+
+ # Even older versions of Netscape interpret any script as Javascript,
+ # which causes major problems with the CDATA hack; solve that by making
+ # the whole thing look like a Javascript comment.
text.gsub!("<![CDATA[]]x><!--]]>", '/*\&')
text.gsub!("<![CDATA[-->]]>", '\&*/')
- return text
+
+ # Delete any zero-width word joiners added for XSLT processing.
+ return text.delete "\u2060"
end
end