I'm a little confused at what you are asking . . . can you elaborate?  It
sounds like you need to display the string representation of the newline
char, so:

"hello
world"

would be displayed as "hello\nworld" by your custom field.  Whenever a <CR>
is entered, your field would display "\n" and whenever you backspace over
the "n" in "\n" you want the cursor to eat the "\" char as well.  For
example, if you had the string "hello\n" with the cursor after the "n" and
the user hits backspace, you want the field to display "hello".

Is this the goal?  If not, please try to clarify a bit.

Cheers,

-DGA

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