facebook/wordpress — pull request #268 by niallkennedy (2012-10-01 23:20:42+00:00)
Title: fix spacing for social plugins microdata options

Social plugin options are defined through microdata on the target element. The `send` and `show-faces` options for the Like button receive special treatment outside of the microdata options builder.

Add a trailing space to the `send` and `show-faces` options for consistency with the microdata string builder. Check for an existing `ref` option passed to the function before outputting a duplicate attribute. Trim trailing whitespace before returning attribute string.