[Xcode] 行末の空白を自動的に削除する
Xcode > Preferences > Text Editing
Include whitespace-only lines をオン
Reference
http://stackoverflow.com/questions/1390329/trim-trailing-spaces-in-xcode
Xcode > Preferences > Text Editing
Include whitespace-only lines をオン
http://stackoverflow.com/questions/1390329/trim-trailing-spaces-in-xcode