Re: Highlighting a missing final newline?

[Yuri Khan]

On Tue, Mar 22, 2016 at 5:30 PM, egarrulo <egarrulo@gmail.com> wrote:
> How would you highlight a missing final newline?  I mean: if a buffer lacks
> a final newline, then you would see a (customizable) character at the end of
> the buffer; otherwise, you would see nothing.
>
> AFAIK, `font-lock-add-keywords' can't help here because there is no
> character to highlight.  I have looked into `whitespace-mode' for
> inspiration, but the code is too complex for me.
>
> Thank you.

Maybe highlight the last character which is not newline and is
immediately followed by the end of buffer, by regexp ".\'"?