Re: Saving when the coding system can't code all buffer characters

[Richard Stallman]

      In addition, I don't know what is "all the relevant
    information" for a user.   One may want to see the info
    shown by C-u C-x =, one may want to see the docstring of
    each coding system, ...

I am talking about the interesting parts of the output of C-u C-x =.
All or part of this:

  character: á (2273, #o4341, #x8e1, U+00E1)
    charset: latin-iso8859-1
             (Right-Hand Part of Latin Alphabet 1 (ISO/IEC 8859-1): ISO-IR-100.)
   category: l:Latin
   to input: type "a'" with latin-1-postfix

How about putting some of that into the warning buffer?

It need not be ALL of those 5 lines -- just whatever part seems
useful.  And the parts we use could be combined so as to
occupy fewer lines.  That ought to avoid the problem of making the
warning too long so that it always needs scrolling.