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From: Al Petrofsky <al@petrofsky.org>
Cc: emacs-devel@gnu.org
Subject: Re: Changes to make the C-x @ commands work with function keys
Date: Tue, 12 Feb 2002 09:56:51 -0800	[thread overview]
Message-ID: <200202121756.JAA08706@radish.petrofsky.org> (raw)
In-Reply-To: <Pine.SUN.3.91.1020212104343.4485I-100000@is> (message from Eli Zaretskii on Tue, 12 Feb 2002 10:44:22 +0200 (IST))

> From: Eli Zaretskii <eliz@is.elta.co.il>
> On Mon, 11 Feb 2002, Al Petrofsky wrote:
> 
> > Below are some changes that make the C-x @ commands work with function
> > keys.
> 
> Sorry, I don't understand: this seems to work already.  For example,
> "C-x @ c <right>" invokes <C-right>.  What am i missing?

You must be running on a window system, where pressing right generates
a single <right> event.  On a tty, pressing right generates something
like ESC O C.  In 21.1, the C-x @ sequences modify just the single
event that follows (i.e. ESC), rather than modifying the translated
event that would follow after function-key-map processing.

> (Btw, I always wondered how can this be useful for the Ctrl modifier,
> since "C-x" requires Ctrl at least with `x'.  Is there an assumption
> that the user can arrange for some key to generate "C-x", but cannot
> use Ctrl otherwise?)

Yes.  An uncustomized tty will generate C-x when you type C-x, but
will not generate C-right when you type C-right.  Termcap/terminfo
don't even provide a way to state what the byte sequence for C-right
would be.  With the changes I proposed, the user can at least make a
private arrangement between his tty and emacs.

-al

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  parent reply	other threads:[~2002-02-12 17:56 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-02-12  1:38 Changes to make the C-x @ commands work with function keys Al Petrofsky
2002-02-12  8:44 ` Eli Zaretskii
2002-02-12 16:40   ` Stefan Monnier
2002-02-12 17:56   ` Al Petrofsky [this message]
2002-02-13  6:11     ` Eli Zaretskii
2002-02-13 15:39 ` Richard Stallman

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