bash and sed may not be available on Windows

diff --git a/exampleSite/R/build.R b/exampleSite/R/build.R
index 4747bd1902c81004e4b5698115033b7cb7836626..78c3e5678ac154fcfda5b03264b7d1b01c9405dc 100644 (file)
--- a/exampleSite/R/build.R
+++ b/exampleSite/R/build.R
@@ -1,5 +1,5 @@
 file.copy('content/_index.markdown', '../README.md', overwrite = TRUE)
-system("sed -i '' -e '1,6d' -e '34,38d' ../README.md")
+if (Sys.which('sed') != '') system("sed -i '' -e '1,6d' -e '34,38d' ../README.md")
 cat(
   '[![Screenshot](https://github.com/yihui/hugo-xmin/raw/master/images/screenshot.png)](https://xmin.yihui.name)\n',
   file = '../README.md', append = TRUE

diff --git a/exampleSite/content/_index.Rmarkdown b/exampleSite/content/_index.Rmarkdown
index 4f58bee39875fed40eab83c899324dbdca4f6cde..42a2b7195a87cee257d71f6a330807706730f987 100644 (file)
--- a/exampleSite/content/_index.Rmarkdown
+++ b/exampleSite/content/_index.Rmarkdown
@@ -10,7 +10,7 @@ title: Home
 
 **XMin** is a Hugo theme written by [Yihui Xie](https://yihui.name) in about four hours: half an hour was spent on the Hugo templates, and 3.5 hours were spent on styling. The main motivation for writing this theme was to provide a really minimal example to beginners of Hugo templates. This XMin theme contains about 130 lines of code in total, including the code in HTML templates and CSS (also counting empty lines).
 
-```{bash, comment='', echo=2}
+```{bash, comment='', echo=2, eval=Sys.which('bash') != ''}
 cd ../..;
 find . -not -path '*/exampleSite/*' \( -name '*.html' -o -name '*.css' \) | xargs wc -l
 ```