the argument error of include_graphics() takes value from the glo…

…bal R option `knitr.graphics.error` by default #1717 (comment)
yihui · Feb 7, 2020 · 6daea79 · 6daea79
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diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,8 @@
 # CHANGES IN knitr VERSION 1.29
 
+## NEW FEATURES
+
+- The argument `error` of `include_graphics()` takes value from the global R option `knitr.graphics.error` by default, e.g., you may set `options(knitr.graphics.error = FALSE)` so `include_graphics()` won't signal an error if the graphics file to be included doesn't exist.
 
 # CHANGES IN knitr VERSION 1.28
 

diff --git a/R/plot.R b/R/plot.R
@@ -372,7 +372,7 @@ par2 = function(x) {
 #' @export
 include_graphics = function(
   path, auto_pdf = getOption('knitr.graphics.auto_pdf', FALSE), dpi = NULL,
-  error = TRUE
+  error = getOption('knitr.graphics.error', TRUE)
 ) {
   path = native_encode(path)  # https://d.cosx.org/d/420524
   if (auto_pdf && is_latex_output()) {

diff --git a/man/include_graphics.Rd b/man/include_graphics.Rd