Display of undisplayable characters: \U01F3A8 instead of diamond

[Richard Stallman]

[[[ To any NSA and FBI agents reading my email: please consider    ]]]
[[[ whether defending the US Constitution against all enemies,     ]]]
[[[ foreign or domestic, requires you to follow Snowden's example. ]]]

The text-based Linux console is unable to display many Unicode
characters.  In Emacs 29, display of undisplayable characters has
changed.  It used to show them with a diamond.  Now it shows the
unicode character code as hex, preceded by \U.

I find that change quite inconvenient.  It makes the text harder to
read.  Showing the codes does no good, since I don't know these codes,
not even for characters I am familiar with.  To find out what
character a code represents, I have to use C-u C-x =, just as I did
before.

I last built the sources in May.  Has this changed in a significant
way since then?

I could not find, in NEWS, anything about this change -- it ought to
be in NEWS .  Nor a way to go back to the old
behavior.  Is there a way?  If not, would people please create a way?

As a separate question, do users generally like this change?
Would it be better to return to the old diamond method as the default?


-- 
Dr Richard Stallman (https://stallman.org)
Chief GNUisance of the GNU Project (https://gnu.org)
Founder, Free Software Foundation (https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)