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From: Michael Powe <michael+gnus@trollope.org>
Subject: Re: multi-line conditionals in elisp
Date: Sun, 22 Dec 2002 22:48:26 GMT	[thread overview]
Message-ID: <uhed5sm9i.fsf@trollope.org> (raw)
In-Reply-To: x5smwphnpx.fsf@lola.goethe.zz

>>>>> "David" == David Kastrup <David.Kastrup@t-online.de> writes:

    David> Michael Powe <michael+gnus@trollope.org> writes:
    >> sorry for the dumb question, but i'm sure of the best way to do
    >> this. i have emacs installed on several machines and would like
    >> to use a single .emacs.  it's annoying to have to maintain
    >> different ones, and i forget sometimes that one library is
    >> installed on one machine but not on another.
    >> 
    >> my solution was to put a conditional in the .emacs to test for
    >> the existence of a library before following its loading
    >> instructions.  what i'm having a problem with, is conditionals
    >> of this format:
    >> 
    >> if (true) do item one do item two do item three ...  else do
    >> item four
    >> 
    >> this is trivial in other languages, but not, it seems, in
    >> elisp.  (i think it's just a case of, i don't really understand
    >> the language.)  here's what i did:
    >> 
    >> (if (locate-library "python-mode") (cond((autoload 'python-mode
    >> "python-mode" "Python editing mode" t) (setq auto-mode-alist
    >> (cons '("\\.py$" . python-mode) auto-mode-alist)))) (message
    >> "python library not found"))

    David> That is junk.  I recommend you look up progn.

    >> nb. trivial note: on my main workstation, i maintain my
    >> dot-files in rcs.  i noted yesterday that my oldest entry in
    >> the .emacs is from january 30, 1998.  so, in a little over a
    >> month, it will be 5 years old.  that's a lot of bits & bytes
    >> through the pipe.

    David> 5 years and you don't know progn.  That certainly _is_
    David> impressive.

well, i'm ignorant and you are a jerk.  which one of us is worse off?
hint: i don't think it's me.  i can learn what i don't know, but you
can never change your character.  thank you very little for taking
time out of your busy day to ridicule me.

mp

-- 
Michael Powe					Waterbury, CT
-------------------------------------------------------------
"The most likely way for the world to be destroyed, most experts
agree, is by accident.  That's where we come in.  We're computer
professionals.  We cause accidents."  -- Nathaniel Borenstein

  reply	other threads:[~2002-12-22 22:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-12-22 19:00 multi-line conditionals in elisp Michael Powe
2002-12-22 19:12 ` David Kastrup
2002-12-22 22:48   ` Michael Powe [this message]
2002-12-22 23:05     ` David Kastrup
2002-12-24  3:17       ` Jesper Harder
     [not found] ` <michael+gnus@trollope.org>
2002-12-22 19:21   ` Peter S Galbraith
     [not found] ` <mailman.524.1040584903.19936.help-gnu-emacs@gnu.org>
2002-12-22 22:40   ` Michael Powe

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