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Round-tripping key definitions
From: |
Lars Ingebrigtsen |
Subject: |
Round-tripping key definitions |
Date: |
Sat, 13 Nov 2021 05:58:02 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
It'd be nice if doing a `describe-keymap' would output the same bindings
that we put in. I mean, on the same form. If you define a key as
"C-i", that function will describe the key as "TAB", for instance. (And
the person making that keymap may have meant C-i with "i" being a
mnemonic for something.)
To do this, we'd have to stash the "intended" syntax somewhere, but:
(define-keymap
"a" 'foo
"b" 'bar)
=> (keymap (98 . bar) (97 . foo))
(define-keymap
:full t
"a" 'foo
"b" 'bar)
=> (keymap #^[nil nil keymap #^^[3 0...])
In the latter case, we could stash the data in the case table somewhere.
But the sparse syntax doesn't give us a lot of wriggle room.
We could, of course, change the keymap types (since we're already adding
new functions for all of this binding stuff), but it'd be a lot of work.
Anybody got any ideas?
Hm... while typing this, it occurs to me that we could add an
"impossible" "binding". I.e.:
(keymap (98 . bar) (97 . foo) (:bindings <hash table>))
`describe-keymap' could use the :bindings entry to look up the intended
syntax (and not output that element).
Yeah! I think that should work? (We'd only add this entry if there's
any "ambiguous" keys in the map, so the impact wouldn't be noticeable, I
think.)
Thank you for coming to my TED talk.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- Round-tripping key definitions,
Lars Ingebrigtsen <=
- Re: Round-tripping key definitions, Stefan Monnier, 2021/11/13
- Re: Round-tripping key definitions, Lars Ingebrigtsen, 2021/11/13
- Re: Round-tripping key definitions, Stefan Monnier, 2021/11/13
- Re: Round-tripping key definitions, Phil Sainty, 2021/11/13
- Re: Round-tripping key definitions, Stefan Monnier, 2021/11/14
- Re: Round-tripping key definitions, Andreas Schwab, 2021/11/14
- Re: Round-tripping key definitions, Stefan Monnier, 2021/11/14
- Re: Round-tripping key definitions, Lars Ingebrigtsen, 2021/11/14
- Re: Round-tripping key definitions, Stefan Monnier, 2021/11/14
- Re: Round-tripping key definitions, Lars Ingebrigtsen, 2021/11/14