get_knitr_pattern

Determine a regex pattern for identifying R code chunks.

internal

Pretty-prints R code without changing the user's formatting
intent.

<dl><dt>filetype</dt>
<dd>A string indicating the filetype - either 'Rmd' or 'Rnw'.</dd></dl>

<dl>

<dt>filetype</dt>
<dd>A string indicating the filetype - either 'Rmd' or 'Rnw'.</dd>

</dl>