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Re: How to find commands run by menu?

From: Andreas Röhler
Subject: Re: How to find commands run by menu?
Date: Wed, 09 Dec 2009 17:06:04 +0100
User-agent: Thunderbird (X11/20081227)

kj wrote:
> Is there any way to determine the exact command that gets run when
> one invokes a particular menu item?
> TIA!
> kynnjo
> P.S.  Here's why I want this.  It's a bit convoluted.  For mysterious
> reasons, the latest version of Emacs on my system does not offer
> any "print region" commands when run in X11 mode (these commands
> do show in the File menu, but are permanently disabled, irrespective
> of whether a region is defined or not).
> I determined that if instead I run Emacs in text mode, now the
> menus do offer the "print region" commands.
> But I don't want to run Emacs in text mode.  Therefore, I want to
> be able to execute *while on X11 mode* the same commands that get
> triggered when I choose (in text mode) one of the "print region"
> commands from the File menu.  Make sense?
> I thought that the desired commands would be ones like ps-print-region,
> but the ones I've guessed produce different-looking printed results
> from those obtained by using the menus under text mode, and I prefer
> the latter by far.  Therefore, I have to conclude that using the
> menus does something more than just calling, say, ps-print-region.


seems no easy way to solve your question. Which is an
inconvenience AFAIS. For the moment here a possible
proceeding relying at the tooltip shown:

>From to the source-code directory,

with M-x grep-find and the command

find . -type f -name "*.el" -print0 | xargs -0 -e grep -nH -e "Print region 
between mark"

it displays

./lisp/menu-bar.el:125:       :help ,(purecopy "Print region between mark and 
current position")))

with RET at the link the source is shown:

(define-key menu-bar-file-menu [print-region]
  `(menu-item ,(purecopy "Print Region") print-region
              :enable mark-active
              :help ,(purecopy "Print region between mark and current 

>From there I guess "print-region" is the command looked for...




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