use custom render
In knitr/R/hooks-md.R there is a custom function render_jekyll.
I wrote a similar one for hugo that makes figure shortcodes.
Then I could remove the perl from the makefile.
This was a dirty hack which I am happy to got rid of.
Suppose I will add some more shortcodes in the future.
For now see some examples here:
I use some examples from Producing Simple Graphs with R.
# Define the cars vector with 5 values
cars <- c(1, 3, 6, 4, 9)
# Graph the cars vector with all defaults
plot(cars)
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