clarification on required behavior of insert_final_newline = false

[Oleg Tkachenko]

• insert_final_newline: set to true to ensure file ends with a newline when saving and false to ensure it doesn't.
• What is the exact semantics of the "false" value of this property? On one hand it reads as "false" requires an editor to make sure a file doesn't end with a newline (and so delete it if it's present). On the other hand "insert_final_newline=false" reads as "do not insert a final new line".
• Can you please clarify how editors expected to handle insert_final_newline = false?
• Thanks!