Pressing ESC while ESC is unbound will insert 0x12 char into editor

Originator:gary
Number:rdar://23221141 Date Originated:10/22/2015
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode 7.1 (7B91b), OSX 10.11.1 (15B42)
Classification: Reproducible:Always
 
When ESC is unbound (likely to happen if you've used and then removed XVim at some point), pressing ESC will insert 0x12 ASCII char into your editor window. 

There is no visual indication this character is in your text file and will cause issues such as build failures.

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