Re: deskheight.el v0.3

[Kevin Rodgers <kevin.rodgers@ihs.com>]

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>