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added "rmarkdown" engine to process code blocks #1683

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added "rmarkdown" engine to process code blocks #1683

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13 changes: 10 additions & 3 deletions R/engine.R
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Original file line number Diff line number Diff line change
Expand Up @@ -392,6 +392,12 @@ eng_asis = function(options) {
if (options$echo && options$eval) one_string(options$code)
}

## output the code, processing as though it's a markdown block
eng_rmarkdown = function(options) {
if (options$echo && options$eval)
one_string(knit(text = options$code, envir = knit_global()))
}

# write a block environment according to the output format
eng_block = function(options) {
if (isFALSE(options$echo)) return()
Expand Down Expand Up @@ -745,9 +751,10 @@ local({
knit_engines$set(
highlight = eng_highlight, Rcpp = eng_Rcpp, tikz = eng_tikz, dot = eng_dot,
c = eng_shlib, fortran = eng_shlib, fortran95 = eng_shlib, asy = eng_dot,
cat = eng_cat, asis = eng_asis, stan = eng_stan, block = eng_block,
block2 = eng_block2, js = eng_js, css = eng_css, sql = eng_sql, go = eng_go,
python = eng_python, julia = eng_julia, sass = eng_sxss, scss = eng_sxss
cat = eng_cat, asis = eng_asis, rmarkdown = eng_rmarkdown, stan = eng_stan,
block = eng_block, block2 = eng_block2, js = eng_js, css = eng_css,
sql = eng_sql, go = eng_go, python = eng_python, julia = eng_julia,
sass = eng_sxss, scss = eng_sxss
)

cache_engines$set(python = cache_eng_python)
Expand Down