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A bug, I think, in key-binding
From: |
David Kastrup |
Subject: |
A bug, I think, in key-binding |
Date: |
Wed, 09 Aug 2006 00:47:28 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) |
Hi, we have
read-key-sequence is a built-in function in `src/keyboard.c'.
(read-key-sequence PROMPT &optional CONTINUE-ECHO DONT-DOWNCASE-LAST
CAN-RETURN-SWITCH-FRAME COMMAND-LOOP)
Read a sequence of keystrokes and return as a string or vector.
The sequence is sufficient to specify a non-prefix command in the
current local and global maps.
[...]
If the key sequence starts with a mouse click, then the sequence is read
using the keymaps of the buffer of the window clicked in, not the buffer
of the selected window as normal.
[...]
`read-key-sequence', although the DOC string does not mention it, will
also substitute any mouse-activated maps for the buffer-local maps, if
they are present and a click event is used.
But if we take a look at `key-binding':
key-binding is a built-in function in `src/keymap.c'.
(key-binding KEY &optional ACCEPT-DEFAULT NO-REMAP)
Return the binding for command KEY in current keymaps.
KEY is a string or vector, a sequence of keystrokes.
[...]
we will find that the same expression "current keymaps" suddenly fails
to include mouse-activated maps even for click events.
As a result, you can't reliably feed the output of `read-key-sequence'
into `key-binding': the meaning differs.
I think this is a mistake.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
- A bug, I think, in key-binding,
David Kastrup <=
- Re: A bug, I think, in key-binding, Richard Stallman, 2006/08/09
- Re: A bug, I think, in key-binding, Stefan Monnier, 2006/08/09
- Re: A bug, I think, in key-binding, Richard Stallman, 2006/08/09
- Re: A bug, I think, in key-binding, Richard Stallman, 2006/08/17
- Re: A bug, I think, in key-binding, Stefan Monnier, 2006/08/17
- Re: A bug, I think, in key-binding, Richard Stallman, 2006/08/18
- Re: A bug, I think, in key-binding, David Kastrup, 2006/08/18
- Re: A bug, I think, in key-binding, Richard Stallman, 2006/08/22
- Re: A bug, I think, in key-binding, David Kastrup, 2006/08/22
Re: A bug, I think, in key-binding, David Kastrup, 2006/08/09