(I posted this to comp.emacs last week, but got no takers.)
I'm running NTEmacs 21.3.1.
I'd like ASCII characters outside of 32-126 to show up as a pair of
hexadecimal digits with an additional face such as underline or
italic. (I just happen to prefer hex to octal; I don't want a lot of
spurious "\x" everywhere, so I change the face instead.)
So, to test, I try
; 0 is ASCII ^@; 48 is ASCII '0'
(aset standard-display-table 0
(vector (logior 48 (lsh (face-id 'underline) 19))
(logior 48 (lsh (face-id 'underline) 19))))
Sure enough, ^@ comes out as 00, underlined.
But if I use the mouse to select a region containing the character ^@,
the glyph face does not merge with the overlay face; the underline face
displays, but not the region face. To be more specific, if I have the
text
[EMAIL PROTECTED]
it displays as
a00a (pretend the 00 is underlined)
but if I select this text, the background color of the a's changes, but
not of the underlined 0's.
What am I doing wrong?
Theron
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