From: Eli Zaretskii <eliz@gnu.org>
To: Helmut Eller <eller.helmut@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: e and pi
Date: Sat, 18 Sep 2010 12:01:05 +0200 [thread overview]
Message-ID: <83hbhnz7z2.fsf@gnu.org> (raw)
In-Reply-To: <m2wrqk1gz2.fsf@gmail.com>
> From: Helmut Eller <eller.helmut@gmail.com>
> Date: Fri, 17 Sep 2010 18:18:25 +0200
>
> > (defun froob (argv)
> > (lambda (f) (cons f argv)))
> >
> > and have that fail, because "argv" is a defvar defined in startup.el.
>
> I once had a function with an argument called system-name. Suddenly
> Emacs started to complain that some files are locked by some other user.
> How many people now that system-name is a global variable and used by
> the file-locking code? The lesson is that Emacs should not pre-define
> global variables with names that are likely candidates for local
> variables.
What you describe as a big surprise is actually known to every C/C++
programmer: some names are "reserved by the implementation" and should
not be used by the application code.
next prev parent reply other threads:[~2010-09-18 10:01 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-16 13:25 e and pi Stefan Monnier
2010-09-16 13:44 ` Deniz Dogan
2010-09-16 15:37 ` Stefan Monnier
2010-09-16 13:47 ` Leo
2010-09-16 15:39 ` Stefan Monnier
2010-09-16 14:27 ` Helmut Eller
2010-09-16 15:44 ` Stefan Monnier
2010-09-16 18:52 ` Helmut Eller
2010-09-16 14:44 ` Jason Rumney
2010-09-16 22:54 ` Chong Yidong
2010-09-17 0:04 ` Deniz Dogan
2010-09-17 0:14 ` Wojciech Meyer
2010-09-17 7:00 ` David Kastrup
2010-09-17 8:09 ` Simon Leinen
2010-09-17 8:15 ` David Kastrup
2010-09-17 9:06 ` Stephen J. Turnbull
2010-09-17 9:21 ` David Kastrup
2010-09-17 9:47 ` Helmut Eller
2010-09-17 15:11 ` Stefan Monnier
2010-09-17 15:22 ` Lars Magne Ingebrigtsen
2010-09-17 15:56 ` Helmut Eller
2010-09-17 22:13 ` Stefan Monnier
2010-09-17 15:44 ` Wojciech Meyer
2010-09-17 15:50 ` Chong Yidong
2010-09-17 16:06 ` Wojciech Meyer
2010-09-17 16:18 ` Helmut Eller
2010-09-17 16:45 ` Glenn Morris
2010-09-17 17:14 ` Glenn Morris
2010-09-18 10:01 ` Eli Zaretskii [this message]
2010-09-18 10:21 ` Helmut Eller
2010-09-18 11:07 ` Eli Zaretskii
2010-09-18 11:26 ` Helmut Eller
2010-09-18 10:50 ` David Kastrup
2010-09-18 11:09 ` Eli Zaretskii
2010-09-18 14:27 ` Stephen J. Turnbull
2010-09-18 14:32 ` Andreas Schwab
2010-09-18 15:11 ` Drew Adams
2010-09-17 22:17 ` Stefan Monnier
2010-09-18 1:10 ` Chong Yidong
2010-09-18 8:30 ` Stefan Monnier
2010-09-18 19:10 ` Chong Yidong
2010-09-18 21:37 ` Uday S Reddy
2010-09-19 0:57 ` Drew Adams
2010-09-18 13:43 ` Juanma Barranquero
2010-09-18 14:53 ` Stefan Monnier
2010-09-18 15:01 ` Lars Magne Ingebrigtsen
2010-09-18 16:00 ` Stefan Monnier
2010-09-19 10:07 ` Juanma Barranquero
2010-09-17 16:14 ` Drew Adams
2010-09-18 15:12 ` tomas
2010-09-18 17:52 ` David Kastrup
2010-09-19 19:13 ` tomas
2010-09-17 23:35 ` Uday S Reddy
2010-09-17 16:55 ` Sam Steingold
2010-09-17 22:16 ` Stefan Monnier
2010-09-17 22:55 ` Drew Adams
-- strict thread matches above, loose matches on Subject: below --
2010-09-17 4:20 MON KEY
2010-09-18 5:58 MON KEY
2010-09-18 14:50 ` Stefan Monnier
2010-09-19 2:03 ` MON KEY
2010-09-18 16:07 ` David De La Harpe Golden
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=83hbhnz7z2.fsf@gnu.org \
--to=eliz@gnu.org \
--cc=eller.helmut@gmail.com \
--cc=emacs-devel@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).