Re: Entering Unicode characters

[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. ]]]

This looks pretty good.  It needs to be a little more
self-documenting; for instance, it should say how to switch to another
block.  It has a lot of commands:

    (define-key ubb-mode-map (kbd "<SPC>") #'ubb-describe-codepoint-briefly)
    (define-key ubb-mode-map (kbd "D") #'ubb-describe-codepoint)
    (define-key ubb-mode-map (kbd "f") #'ubb-forward-codepoint)
    (define-key ubb-mode-map (kbd "b") #'ubb-backward-codepoint)
    (define-key ubb-mode-map (kbd "n") #'ubb-next-set)
    (define-key ubb-mode-map (kbd "p") #'ubb-prev-set)
    (define-key ubb-mode-map (kbd ">") #'ubb-next-set)
    (define-key ubb-mode-map (kbd "<") #'ubb-prev-set)
    (define-key ubb-mode-map (kbd "N") #'ubb-select-set-by-name)
    (define-key ubb-mode-map (kbd "G") #'ubb-browse-group-by-name)
    (define-key ubb-mode-map (kbd "C") #'ubb-browse-block-by-codepoint)
    (define-key ubb-mode-map (kbd "+") #'text-scale-increase)
    (define-key ubb-mode-map (kbd "-") #'text-scale-decrease)
    (define-key ubb-mode-map (kbd "*") #'ubb-reset-text-scale)
    (define-key ubb-mode-map (kbd "g") #'ubb-redraw)
    (define-key ubb-mode-map (kbd "q") #'ubb-quit)

and it isn't obvious to me what they all do.

Many of the characters don't display on my console,
Have we got a way to tell, in Emacs Lisp, whether a certain
character code can actually display?  I think there is one.

Could this use that to show something meaningful,
for characters that can't really display?  For instance,
a sequence of 2 or 3 characters that somehow stands for
the real character?

For instance, the sequence << could stand for «, and
the sequence i-. could stand for dotless i.

-- 
Dr Richard Stallman
President, Free Software Foundation (gnu.org, fsf.org)
Internet Hall-of-Famer (internethalloffame.org)
Skype: No way! See stallman.org/skype.html.