On Mon, Aug 21, 2017 at 12:17 PM, Michael Albinus <michael.albinus@gmx.de> wrote:
Tramp does already something like this on its own, using
`tramp-display-escape-sequence-regexp' and
`tramp-device-escape-sequence-regexp'. Let me check, whether I could
rewrite this to the more general `ansi-color-filter-region`.

So it does, in versions newer than what is shipped with Emacs.  Is the current release of TRAMP available through any ELPA style package repository, or do I need obtain and compile it myself to use it ahead of the built-in?  I'll certainly do that, but I'm lazy.
 
(I wouldn't reject a patch from your side :-)

If I confirm it still exists in the current version I'll try and cut a patch for this, but my contribution time is limited, I'm afraid.