Re: [PATCH 2/3] lisp/progmodes/etags.el don't (forward-char) as it's overriden next line

[Eli Zaretskii]

> Date: Sun, 17 Mar 2019 06:41:41 +0300
> From: Konstantin Kharlamov <address@hidden>
> Cc: address@hidden
> 
> > The ^M character is what causes that "..." ellipsis.  You cannot
> > search for it interactively because Emacs prevents that, but the
> > character is there in the buffer text.
> 
> Okay, well, I couldn't find it by evaluating (re-search-forward "^M") 
> either.
> 
> So, given the character can't be inspected, the old code couldn't even 
> do anything :)

I suggest to read the node "Selective Display" in the ELisp manual
about this feature, and how the ^M characters come into play.