Re: Displaying bytes

[Richard Stallman]

    I don't know you see this "tis620" stuff.

How strange this discrepancy.  I have a few changes that are not
installed, but not in anything relevant here.  I last updated
source code on Nov 18.

Here's what apparently defines that character set, in mule-conf.el:

(define-charset 'tis620-2533
  "TIS620.2533"
  :short-name "TIS620.2533"
  :ascii-compatible-p t
  :code-space [0 255]
  :superset '(ascii eight-bit-control (thai-tis620 . 128)))

I don't entirely understand define-charset, but it seems plausible
that this gives the observed results.  Is this absent in your source?

Anyway, please don't overlook the other suggestions in my message
for how to make things clearer.

    > What are the situations where a user is likely to see these stray
    > bytes.

    There pretty much shouldn't be any in multibyte buffers.

Would it be good to ask people to send bug reports when these
stray byte characters appear in multibyte buffers?