jquery/learn.jquery.com — pull request #224 by qnet-herwin (2013-02-01 12:27:11+00:00)
Title: Update page/using-jquery-core/faq/how-do-i-select-an-element-by-an-id-th...

...at-has-characters-used-in-css-notation.md

The second example on http://api.jquery.com/id-selector/ shows us that [ and ] should be escaped too.