Stricter regexp for .r,.R files

Fixes #625
r-lib · Aug 18, 2017 · 202fafa · 202fafa
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diff --git a/NEWS.md b/NEWS.md
@@ -1,5 +1,8 @@
 # roxygen2 6.0.1.9000
 
+* Stricter regular expression ensures only files ending with `.R` or `.r` are
+  parsed for roxygen comments (#625).
+
 * `%` in inline code blocks in markdown is now automatically escaped
   (#640).
 

diff --git a/R/utils.R b/R/utils.R
@@ -100,7 +100,7 @@ same_contents <- function(path, contents) {
 }
 
 r_files <- function(path) {
-  sort_c(dir(file.path(path, "R"), "[.Rr]$", full.names = TRUE))
+  sort_c(dir(file.path(path, "R"), "\\.[Rr]$", full.names = TRUE))
 }
 
 ignore_files <- function(rfiles, path) {