XTerm: Preventing HIDDEN_CHAR in Printed Output

[admin]

Hello, all.

Has nobody else noticed the 0xFFFF (unassigned Unicode U+FFFF) characters  
scattered about XTerm's print-everything output?  You might not see these  
characters in a shell, but $EDITOR (hex or otherwise) is liable to show them  
in between EVERY character.  This is not only annoying but also causes  
problems... though perhaps the problem is with my setup?  I run XTerm(388)  
with TERM=xterm-256color.  Please let me know what can be done.

Otherwise, I have attached a small patch that attempts to address the issue.   
Thank you!

2023-11-18 XTerm: Preventing HIDDEN_CHAR in Printed Output.patch
Description: Text document