Open Radar

 
Summary:
If I put a right-to-left mark in a UITextField, so its contents look like this: 
“Regular Text ‮Watch out for Unicode‬”, then NSLog the UITextField, the output looks like this:

<UITextField: 0x7f9321735810; frame = (27 318.5; 348 30); text = 'Regular Text ‮Watch out f...'; clipsToBounds = YES; opaque = NO; autoresize = RM+BM; gestureRecognizers = <NSArray: 0x7f93215a6e50>; layer = <CALayer: 0x7f9321733290>>
This can be a problem, because the output is illegible after the text.

Steps to Reproduce:
1. Create a new iOS app (probably Mac, too)
2. Add a UITextField, and connect it to an IBOutlet in the view controller.
3. Paste the text between the quotes into a UITextField while running the app.
4. NSLog the UITextField property

Expected Results:
I expected to see something like this:

<UITextField: 0x7f9321735810; frame = (27 318.5; 348 30); text = 'Regular Text ‮Watch out f‬...'; clipsToBounds = YES; opaque = NO; autoresize = RM+BM; gestureRecognizers = <NSArray: 0x7f93215a6e50>; layer = <CALayer: 0x7f9321733290>>

That has a POP DIRECTIONAL FORMATTING (U+202C) character immediately before the ... of the text property.


Actual Results:
I got these results:

<UITextField: 0x7f9321735810; frame = (27 318.5; 348 30); text = 'Regular Text ‮Watch out f...'; clipsToBounds = YES; opaque = NO; autoresize = RM+BM; gestureRecognizers = <NSArray: 0x7f93215a6e50>; layer = <CALayer: 0x7f9321733290>>


Version:
Xcode Version 6.2 (6C131e)
OS X Yosemite 10.10.4 (14E46)

Notes:
Inserting a POP DIRECTIONAL FORMATTING (U+202C) character immediately before the end of all user-inputted strings can mitigate this problem.

Configuration:


Attachments:


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ADDED 27-APR-2016

A possible issue that could occur with this is when a website or email displays a domain name that appears to be from Apple: ‮moc.elppa.stnuocca.net‬, which is really from [U+202E]moc.elppa.stnuocca.net.