From: Xah Lee <xahlee@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: elisp's cl package. Don't understand the notice about eval-when-compile
Date: Wed, 25 Mar 2009 19:12:40 -0700 (PDT) [thread overview]
Message-ID: <9032ef00-187f-47ad-a2de-e0d07a3303ee@s38g2000prg.googlegroups.com> (raw)
In-Reply-To: 558fb909-6290-4c04-88a3-ad385d75f456@e1g2000pra.googlegroups.com
Xah Lee <xah...@gmail.com> writes:
> > in emacs lisp's CL package documentation “(info "(cl)Overview")”, it
> > has this passage:
>
> > *Please note:* the "CL" functions are not standard parts of the
> > Emacs Lisp name space, so it is legitimate for users to define them
> > with other, conflicting meanings. To avoid conflicting with those
> > user
> > activities, we have a policy that packages installed in Emacs must not
> > load "CL" at run time. (It is ok for them to load "CL" at compile
> > time
> > only, with `eval-when-compile', and use the macros it provides.) If
> > you are writing packages that you plan to distribute and invite
> > widespread use for, you might want to observe the same rule.
>
> > I don't quite understand it.
On Mar 25, 3:02 am, "Thomas F. Burdick" <tburd...@gmail.com> wrote:
> No. It's saying that if you are trying to get your package included in
> the official Emacs distribution, you can only use macros from cl.el,
> not functions.
Ok, after spent some 30 min starting to write a reply with much more
confusion, i think i understand this now and i think this is the best
explanation. Thanks.
though, there's still the practical question of which ones are macros.
There doesn't seem to have a clear list.
basically, my concern here is practical one. I want to use some
functionalities in cl, but need to know which i can use etc. So, if
programers using cl for their packages for public, they need to have a
list of exactly what they can use.
... after some 10 min thinking and reading the cl doc, at this point i
guess i don't have a question... i guess a clear list of macro isn't
there because the whole thing is rather complex... the cl package is
rather more for CL programers coming to elisp as opposed to simply a
extra library of useful functions...
here's some more confusion i have...
For example, when i do describe-function on “pop”, it says:
«pop is a Lisp macro in `subr.el'.»
but after loading cl, it says:
«pop is a Lisp macro in `cl.el'.»
So, it appears, cl package also shadow elisp symbols (apparantly they
are the same thing, but if so, why there's one in still in cl when
already moved to elisp?).
Xah
∑ http://xahlee.org/
☄
next prev parent reply other threads:[~2009-03-26 2:12 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-25 3:02 elisp's cl package. Don't understand the notice about eval-when-compile Xah Lee
2009-03-25 4:42 ` Michael Ekstrand
2009-03-25 10:02 ` Thomas F. Burdick
2009-03-26 2:12 ` Xah Lee [this message]
2009-03-26 5:30 ` Jason Rumney
2009-03-26 13:15 ` Thomas F. Burdick
2009-04-01 1:01 ` Miles Bader
2009-03-26 8:58 ` Leo
2009-03-26 9:32 ` Juanma Barranquero
2009-03-26 12:37 ` Leo
2009-03-26 15:09 ` Samuel Wales
2009-03-26 20:09 ` Leo
2009-03-26 21:54 ` Lennart Borgman
2009-03-27 1:42 ` Kevin Rodgers
[not found] ` <mailman.4060.1238118196.31690.help-gnu-emacs@gnu.org>
2009-03-27 6:30 ` Xah Lee
2009-03-27 8:30 ` Kojak
2009-03-27 10:37 ` David Kastrup
2009-03-29 18:20 ` Eli Zaretskii
[not found] ` <mailman.4213.1238350954.31690.help-gnu-emacs@gnu.org>
[not found] ` <2f147e23-2e25-4cfb-885c-64d835993b12@y6g2000prf.googlegroups.com>
2009-03-30 20:03 ` B. T. Raven
2009-03-30 20:50 ` Lennart Borgman
2009-03-31 4:12 ` Xah Lee
2009-03-31 5:40 ` B. T. Raven
2009-03-31 9:50 ` Nikolaj Schumacher
2009-03-31 10:36 ` Alan Mackenzie
2009-03-26 2:53 ` Kevin Rodgers
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