Issue #9304 has been updated by ploeh (Mark Seemann). Jekyll bug report: https://github.com/jekyll/jekyll/issues/1862 ---------------------------------------- Bug #9304: Invalid XML entity references https://bugs.ruby-lang.org/issues/9304#change-43909 Author: ploeh (Mark Seemann) Status: Open Priority: Normal Assignee: Category: Target version: ruby -v: 2.0.0 Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN =begin It seems that the escapeHTML method occasionally generates the invalid XML entity reference (({&tt;})) when XML escaping. See this Stack Overflow question for more details: http://stackoverflow.com/q/20563078/126014 Although I see this issue manifest itself in Jekyll, the Jekyll maintainers closed the issue I reported there because the Jekyll filter delegates to CGI.escapHTML. Could it be a but in escapeHTML? I'm seeing this on my own system, which is currently reporting: $ ruby --version ruby 2.0.0p247 (2013-06-27) [i386-mingw32] but I'm also seeing this on GitHub pages, and I don't know the exact version of Ruby running in that environment. =end -- http://bugs.ruby-lang.org/