Can One Letter Break Your App!?

Ever have a bug that only shows up on one machine? Meet the Turkish I, where too lower can change your strings in unexpected ways. Lowercasing uses your current culture. So the uppercase I can lowercase into a dotless whatever that is, not the ASCII I with a dot that you expect. But did you notice that the string equals handled it correctly?

That's because the string comparison using ordinal ignore case is culture agnostic. So don't normalize. Compare correctly, and your global users will thank you.