[PATCH WIP] emacs: Sanitize authors and subjects in search and show

[David Bremner]

Austin Clements <amdragon at MIT.EDU> writes:

> Authors and subjects can contain embedded, encoded control characters
> like "\n" and "\t" that mess up display.  Transform control characters
> into spaces everywhere we display them in search and show.
> ---
>
> This could obviously use some tests, but I thought I'd get it out
> there to see what people thought or if the behavior should be tweaked.

Pushed. I guess now would be a good time to think about tests.

d