1 files changed, 2 insertions, 0 deletions
diff --git a/build/path b/build/path
index 9b68485..550af80 100644
--- a/build/path
+++ b/build/path
@@ -74,6 +74,8 @@ namespace build
       return string_type::npos;
     }
 
+    // Return the position of '.' or npos if there is no extension.
+    //
     static size_type
     find_extension (string_type const& s)
     {