From: "Drew Adams" <drew.adams@oracle.com>
To: "'Kevin Rodgers'" <kevin.d.rodgers@gmail.com>, <help-gnu-emacs@gnu.org>
Subject: RE: How to get current keymap
Date: Sun, 7 Dec 2008 09:33:08 -0800 [thread overview]
Message-ID: <004b01c95891$df3403c0$0200a8c0@us.oracle.com> (raw)
In-Reply-To: <ghgouf$bsm$1@ger.gmane.org>
> >> I used (concat (symbol-name major-mode) "-map") to get
> >> current keymap, but it failed for LaTeX mode. Are there
> >> other methode to get current keymap.
> >
> > If I enter a buffer, do `M-x latex-mode',
> > then M-: (concat (symbol-name major-mode) "-map")
> > it returns "latex-mode-map". What did you want?
> >
> > That's the name of a symbol whose value is the latex mode
> > keymap. If you want the keymap itself, then you want this:
> >
> > (symbol-value ; Value of
> > (intern ; Symbol whose name is
> > (concat (symbol-name major-mode) "-map")))
> >
> > However, (current-local-map) gives you the same thing, and
> > it works regardless of the name of the symbol.
> >
> > (eq (symbol-value
> > (intern
> > (concat (symbol-name major-mode) "-map")))
> > (current-local-map))
> >
> > => t
>
> A different way to find the symbol, instead of relying on its name:
>
> (when (current-local-map)
> (let ((result nil))
> (mapatoms (function (lambda (symbol)
> (when (and (boundp symbol)
> (eq (symbol-value symbol)
> (current-local-map)))
> (push symbol result)))))
> result))
Yes. To be clear, I didn't mean to suggest that one should use the
map-variable's name, or that the above `eq' sexp would always return t. What I
meant was that, for _LaTeX_ mode, the two expressions are `eq'. I should have
made that clear. My point was to _not_ rely on the name, but to use
`current-local-map' instead.
Most uses of keymaps never require knowing the map variable itself; its value
can be used directly. But if for some reason one needs the map variable, then
the code you provided is the way to go.
next prev parent reply other threads:[~2008-12-07 17:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-06 14:37 How to get current keymap netawater
2008-12-06 18:24 ` Xah Lee
2008-12-06 21:37 ` Rupert Swarbrick
2008-12-07 5:28 ` netawater
2008-12-07 6:35 ` Drew Adams
2008-12-07 6:49 ` Drew Adams
2008-12-07 15:09 ` Kevin Rodgers
2008-12-07 17:33 ` Drew Adams [this message]
[not found] ` <mailman.2157.1228671183.26697.help-gnu-emacs@gnu.org>
2008-12-08 14:39 ` netawater
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