Ignore dotfiles when aggregating CPP files for compilation

Author: ianfixes

CHANGELOG.md

@@ -26,6 +26,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 - OSX splash screen re-disabled
 - ArduinoCITable didn't initialize its size on `clear()`
+- CPP file aggregation now ignores dotfiles
 
 ### Security
 

lib/arduino_ci/cpp_library.rb

@@ -60,8 +60,8 @@ def cpp_files_in(some_dir)
       return [] unless File.exist?(some_dir)
       real = File.realpath(some_dir)
       files = Find.find(real).reject { |path| File.directory?(path) }
-      ret = files.select { |path| CPP_EXTENSIONS.include?(File.extname(path)) }
-      ret
+      cpp = files.select { |path| CPP_EXTENSIONS.include?(File.extname(path)) }
+      cpp.reject { |path| File.basename(path).start_with?(".") } # ignore hidden
     end
 
     # CPP files that are part of the project library under test