How to disable smart quotes [OS X 10.9.3 (Mavericks)] I've disabled smart quotes in the keyboard settings, but whenever I type ' or " in Messages (old name: iChat), they get converted to ‘ and “. How do I disable this default conversion?
In addition to System Preferences, this feature can be turned on and off in each app via Edit > Substitutions.  Make sure you check that setting as well.