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Re: deskheight.el v0.3


From: Kevin Rodgers
Subject: Re: deskheight.el v0.3
Date: Fri, 31 Jan 2003 11:54:41 -0700
User-agent: Mozilla/5.0 (X11; U; SunOS i86pc; en-US; rv:0.9.4.1) Gecko/20020406 Netscape6/6.2.2

Bruce Ingalls wrote:

Kevin Rodgers wrote:

Bruce Ingalls wrote:

;;Not sure why interactive mode does not return a value, while compiled mode does.

Do you mean batch mode?

er, yes. I took this notation from another author (of which.el?), and assumed that the standard Emacs parlance was "interactive mode" for M-x, and "compiled mode"
for C-x e


That author and now yourself are very confused.


Batch mode refers to emacs started with the -batch command line argument,
which sets the `noninteractive' variable.

There is no compiled mode.  An Emacs Lisp function may be compiled (as may
forms aka symbolic expressions in general), which is what happens when you byte-
compile a .el file into a .elc file.

A function whose definition contains an interactive spec is called a command,
which can be invoked interactively via `M-x' (execute-extended-command) whether
it has been compiled or not.

Any form can be evaluated via `C-x e'.

I just fooled around and find that `M-x' does return the result of the

interactively executed command:


(setq foo (execute-extended-command nil)) C-x e C-x C-f /tmp/foo RET
; returns:
#<buffer foo>

Perhaps you mean that `M-x desktop-height-approx' doesn't report anything to

the user.  I think what you want is something like:


(let ((deskheight ...))
 (if (interactive-p)                    ; called via M-x
     (message "%d" deskheight)
   deskheight))


--
<a href="mailto:&lt;kevin.rodgers&#64;ihs.com&gt;";>Kevin Rodgers</a>



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