yihui/knitr — pull request #792 by richierocks (2014-06-10 06:17:17+00:00)
Title: Rxhtml now recognised as a file extension for xhtml output

knitr already works for xhtml files, but you had to manually specify the output file name.

This small patch lets knitr recognise that input files with an Rxhtml extension should be converted in the same way as html files, and that the output should be given an xhtml extension.