How to remove '\u{ef}' character from String Swift

Question

let's say I have a string

var a = "#bb #cccc #ddddd\u{ef}" 

and i am setting it to textview like this

let text = a.trimmingCharacters(in: .whitespacesAndNewlines)
let textRemoved = text?.replacingOccurrences(of: "\u{ef}", with: "", options: NSString.CompareOptions.literal, range:nil)
textView.text = textRemove

I am trying to remove the \u{ef} character here. But in textRemoved it is not happening. Please help me how to do it.

I am using Xcode 10. Looks like below Xcode version than 10 is working fine. is it a bug of Xcode 10?

Answer 1

This is a late answer but I struggled to replace "\u{ef}" in string as well. During debugging when hovered over string it showed presence of \u{ef} but when print in description it only showed space.

let str = "\u{ef} Some Title"
print(str) //" Some Title"

I tried replacingOccurrences(of: "\u{ef}", with: "", options: NSString.CompareOptions.literal, range: nil).trimmingCharacters(in: .whitespaces) but it failed as well.

So I used below snippet and it worked like wonder.

 let modifiedStr = str.replacingOccurrences(of: "\u{fffc}", with: "", options: NSString.CompareOptions.literal, range: nil).trimmingCharacters(in: .whitespaces)
print(modifiedStr)  //"Some Title"

Hope this helps someone!!