Lars Magne Ingebrigtsen <larsi@ifi.uio.no> writes:

> Ok, so I'm trying not to use naughty words.
> A user has sent me this backtrace from Emacs 20.2.89:

Hmmm, that sounds like an unreleased version.  Can I presume this has
been pointed out to Richard and he has indicated it is a new feature
and not a bug?  Unreleased versions of emacs, like alpha versions of
Gnus, are supposed to have bugs (much as we would like it to be
otherwise).

> Signaling: (error "Invalid character: 4200, 4831827856, 0x0")
>   insert("  €0    : ")

 ...

> What is happening here is that Gnus is trying to insert \200 into a
> buffer, and Emacs (no longer) will let it.  What is now the proper
> incantation?

> It now does something like

> (insert 128)

That's kind of naughty.

> Is 

> (insert ?\200) 

That would be better.  One is going to come to grief sooner or later
being too cavalier about mixing characters and integers in XEmacs 20.

> allowed?